A04_Specifications_for_Asphlat_Shingle_Replacement.docx

DOCX document 104 KB Posted Aug 30, 2018

Attached to: REROOF TOP COTTAGE - HOFR
Solicitation number: 140P4518Q0045
Issued by: Department of the Interior National Park Service

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File	Type	Posted
Wage_Rates_-_Nassau.pdf	PDF	Aug 30, 2018
A06_NE_Roof.JPG	JPG image	Aug 30, 2018
A06_SE_Roof.JPG	JPG image	Aug 30, 2018
References_Worksheet.doc	DOC document	Aug 30, 2018
A06_West_Porch.JPG	JPG image	Aug 30, 2018
SF25A-16a.pdf	PDF	Aug 30, 2018
A06_Attic_Space_2.JPG	JPG image	Aug 30, 2018
A06_Attic_Space.JPG	JPG image	Aug 30, 2018
A06_NW_Roof_w_Dormer.JPG	JPG image	Aug 30, 2018
Sol_140P4518Q0045.pdf	PDF	Aug 30, 2018
A06_West_Porch_2.JPG	JPG image	Aug 30, 2018
A06_East_Chimney_w_Cricket.JPG	JPG image	Aug 30, 2018

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10-01-17 SPECIFICATIONS FOR Re-ROOF of top cottage at home of fdr national historic site hyde park, ny 12538

TABLE OF CONTENTS

SECTION 01 00 00 GENERAL REQUIREMENTS…………………………………………………………….…………………………..1

SECTION 01 33 23 PRODUCT DATA AND SAMPLES…………………………………………………………………………………8

SECTION 07 31 13 ASPHALT SHINGLES…………………………………………………………………………………….……………14

SECTION 07 60 00 FLASHING AND SHEET METAL………………………………………………………………………………….20

SECTION 07 13 52 MODIFIED BITUMOUS SHEET WATERPROOFING………………………………………………….….29

SECTION 07 92 00 JOINT SEALANTS……………………………………………………………………………………………………...33

SECTION 07 21 13 THERMAL INSULATION…………………………………………………………………………….……………...40

SECTION 01 74 19 CONSTRUCTION WASTE MANAGEMENT…………………………………………………….……………44

SECTION 31 20 11 SITE RESTORATION……………………………………………………………………………………………….….47

10-01-17 i

SECTION 01 00 00

GENERAL REQUIREMENTS

1.1 safety requirements Refer to section 01 35 26, SAFETY REQUIREMENTS for safety and infection control requirements.

1.2 GENERAL INTENTION

A.	Contractor shall completely prepare site for building operations, and furnish labor and materials and perform work for reroof of Top Cottage at Home of FDR National Historic Site as required by drawings and specifications.
B.	Visits to the site by Bidders may be made only by appointment with the Park Facility Manager.
E.	All employees of general contractor and subcontractors shall comply with Park security management program, be identified by project and employer, and restricted from unauthorized access.

1.3 STATEMENT OF BID ITEM(S)

A. ITEM I, REROOF: Work includes general construction, alterations, necessary removal of existing structures and construction and certain other items. Work is to be performed at Top Cottage at Home of FDR National Historic Site. 46 Valkill Dr. Hyde Park NY, 12538. This is a historic structure and special care must be taken to preserve historic fabric not being replaced.

1.4 SPECIFICATIONS AND DRAWINGS FOR CONTRACTOR

A. Photographs and contract documents may be obtained from the website where the solicitation is posted. Additional copies will be at Contractor's expense.

1.5 CONSTRUCTION SECURITY REQUIREMENTS

A.	Security Plan:
1.	The security plan defines both physical and administrative security procedures that will remain effective for the entire duration of the project.
2.	The General Contractor is responsible for assuring that all sub-contractors working on the project and their employees also comply with these regulations.
B.	Motor Vehicle Restrictions
1.	A limited number of (2 to 3) vehicles shall be on-site for General Contractor and its employees for parking in designated areas only.

1.6 OPERATIONS AND STORAGE AREAS

The Contractor shall confine all operations (including storage of materials) on Government premises to areas authorized or approved by the Contracting Officer. The Contractor shall hold and save the Government, its officers and agents, free and harmless from liability of any nature occasioned by the Contractor's performance.

The Contractor shall, under regulations prescribed by the Contracting Officer, use only established roadways. When materials are transported in prosecuting the work, vehicles shall not be loaded beyond the loading capacity recommended by the manufacturer of the vehicle or prescribed by any Federal, State, or local law or regulation. When it is necessary to cross curbs or sidewalks, the Contractor shall protect them from damage. The Contractor shall repair or pay for the repair of any damaged curbs, sidewalks, roads, or landscaping.

D.	Working space and space available for storing materials shall be as determined by the COR.
E.	Workmen are subject to rules of Park applicable to their conduct.
	Execute work in such a manner as to interfere as little as possible with work being done by others. Keep roads clear of construction materials, debris, standing construction equipment and vehicles at all times.
F.	Execute work so as to interfere as little as possible with normal functioning of Park as a whole, including operations of utility services, fire protection systems and any existing equipment, and with work being done by others. Use of equipment and tools that transmit vibrations and noises through the building structure, are not permitted in buildings that are occupied, during construction, except as permitted by COR.
1.	Do not store materials and equipment in other than assigned areas.
2.	Schedule delivery of materials and equipment to immediate construction working areas in quantities sufficient for not more than two work weeks. Provide unobstructed access to structure areas required to remain in operation.
G.	Phasing:
	To insure such executions, Contractor shall furnish the COR with a schedule of approximate dates on which the Contractor intends to accomplish work in each specific area of site, building or portion thereof. In addition, Contractor shall notify the COR two weeks in advance of the proposed date of starting work in each specific area of site, building or portion thereof. Arrange such dates to insure accomplishment of this work in successive phases mutually agreeable to COR and Contractor.
1	Contractor shall take all measures and provide all material necessary for protecting existing equipment and property in affected areas of construction against dust and debris, so that equipment and affected areas to be used in the Park operations will not be hindered. Contractor shall permit access to Park personnel through other construction areas which serve as routes of access to such affected areas and equipment. These routes whether access or egress shall be isolated from the construction area by temporary partitions and have walking surfaces, lighting etc to facilitate access.
I.	Construction Fence: Before construction operations begin, Contractor shall provide a chain link construction fence, 2.1m (seven feet) minimum height, around the construction area. Provide gates as required for access with necessary hardware, including hasps and padlocks. Fasten fence fabric to terminal posts with tension bands and to line posts and top and bottom rails with tie wires spaced at maximum 375mm (15 inches). Bottom of fences shall extend to 25mm (one inch) above grade. Remove the fence when directed by Resident Engineer COR.

1.7 ALTERATIONS

D.	Protection: Provide the following protective measures:
1.	Wherever existing roof surfaces are disturbed they shall be protected against water infiltration. In case of leaks, they shall be repaired immediately upon discovery.
2.	Temporary protection against damage for portions of existing structures and grounds where work is to be done, materials handled and equipment moved and/or relocated.
3.	Protection of interior of existing structures at all times, from damage, dust and weather inclemency. Wherever work is performed, floor surfaces that are to remain in place shall be adequately protected prior to starting work, and this protection shall be maintained intact until all work in the area is completed.

1.8 DISPOSAL AND RETENTION

A.	Materials and equipment accruing from work removed and from demolition of buildings or structures, or parts thereof, shall be disposed of as follows:
1.	Items not reserved shall become property of the Contractor and be removed by Contractor from Park.

2. Refer to SECION 01 74 19 CONSTRUCTION WASTE MANAGEMENT for further clarification.

1.9 PROTECTION OF EXISTING VEGETATION, STRUCTURES, EQUIPMENT, UTILITIES, AND IMPROVEMENTS

The Contractor shall preserve and protect all structures, equipment, and vegetation (such as trees, shrubs, and grass) on or adjacent to the work site, which are not to be removed and which do not unreasonably interfere with the work required under this contract. The Contractor shall only remove trees when specifically authorized to do so, and shall avoid damaging vegetation that will remain in place. If any limbs or branches of trees are broken during contract performance, or by the careless operation of equipment, or by workmen, the Contractor shall trim those limbs or branches with a clean cut and paint the cut with a tree-pruning compound as directed by the Contracting Officer.

The Contractor shall protect from damage all existing improvements and utilities at or near the work site and on adjacent property of a third party, the locations of which are made known to or should be known by the Contractor. The Contractor shall repair any damage to those facilities, including those that are the property of a third party, resulting from failure to comply with the requirements of this contract or failure to exercise reasonable care in performing the work. If the Contractor fails or refuses to repair the damage promptly, the Contracting Officer may have the necessary work performed and charge the cost to the Contractor.

(FAR 52.236-9)

1.10 RESTORATION

A.	Remove, cut, alter, replace, patch and repair existing work as necessary to install new work. Except as otherwise shown or specified, do not cut, alter or remove any structural work, and do not disturb any ducts, plumbing, steam, gas, or electric work without approval of the COR. Existing work to be altered or extended and that is found to be defective in any way, shall be reported to the COR before it is disturbed. Materials and workmanship used in restoring work shall conform in type and quality to that of original existing construction, except as otherwise shown or specified.
B.	Upon completion of contract, deliver work complete and undamaged. Existing work (walls, ceilings, partitions, floors, mechanical and electrical work, lawns, paving, roads, walks, etc.) disturbed or removed as a result of performing required new work, shall be patched, repaired, reinstalled, or replaced with new work, and refinished and left in as good condition as existed before commencing work.
C.	At Contractor's own expense, Contractor shall immediately restore to service and repair any damage caused by Contractor's workmen to existing piping and conduits, wires, cables, etc., of utility services or of fire protection systems and communications systems (including telephone) which are not scheduled for discontinuance or abandonment.

D. Refer to SECTION 31 20 11 SITE RESTORATION for further clarification

1.13 LAYOUT OF WORK

A. The Contractor shall lay out the work from Government established base lines and bench marks, and shall be responsible for all measurements in connection with the layout. The Contractor shall furnish, at Contractor's own expense, all stakes, templates, platforms, equipment, tools, materials, and labor required to lay out any part of the work. The Contractor shall be responsible for executing the work to the lines that may be established or indicated by the Contracting Officer. The Contractor shall also be responsible for maintaining and preserving all stakes and other marks established by the Contracting Officer until authorized to remove them. If such marks are destroyed by the Contractor or through Contractor's negligence before their removal is authorized, the Contracting Officer may replace them and deduct the expense of the replacement from any amounts due or to become due to the Contractor.

(FAR 52.236-17)

1.15 USE OF ROADWAYS

A. For hauling, use only established public roads and roads on Park property and, when authorized by the COR, such temporary roads which are necessary in the performance of contract work. Temporary roads shall be constructed and restoration performed by the Contractor at Contractor's expense. When necessary to cross curbing, sidewalks, or similar construction, they must be protected by well-constructed bridges.

1.20 TEMPORARY TOILETS

A. Provide where directed, (for use of all Contractor's workmen) suitable dry closets where directed. Keep such places clean and free from flies, All appliances connected therewith are to be removed prior to completion of contract, and premises left perfectly clean.

1.21 AVAILABILITY AND USE OF UTILITY SERVICES

A.	The Government shall make all reasonably required amounts of utilities available to the Contractor from existing outlets and supplies, as specified in the contract. The Contractor shall carefully conserve any utilities furnished without charge.
E.	Electricity (for Construction and Testing): Furnish all temporary electric services.
1.	Obtain electricity by connecting to the park electrical distribution system. Electricity is available at no cost to the Contractor.
F.	Water (for Construction and Testing): Furnish temporary water service.
1.	Obtain water by connecting to the Park water distribution system. Provide reduced pressure backflow preventer at each connection as per code. Water is available at no cost to the Contractor.
2.	Maintain connections, pipe, fittings and fixtures and conserve water-use so none is wasted. Failure to stop leakage or other wastes will be cause for revocation (at COR discretion) of use of water from Park’s system.

1.30 PHOTOGRAPHIC DOCUMENTATION

A. During the construction period through completion, provide photographic documentation of construction progress and at selected milestones including electronic indexing, navigation, storage and remote access to the documentation, as per these specifications.

1.32 HISTORIC PRESERVATION

Where the Contractor or any of the Contractor's employees, prior to, or during the construction work, are advised of or discover any possible archeological, historical and/or cultural resources, the Contractor shall immediately notify the COR verbally, and then with a written follow up.

SECTION 01 33 23

PRODUCT DATA, AND SAMPLES

PART 1 – GENERAL

1.1 DESCRIPTION

A. This specification defines the general requirements and procedures for submittals. A submittal is information submitted for Park review to establish compliance with the contract documents.

B. Detailed submittal requirements are found in the technical sections of the contract specifications. The Contracting Officer may request submittals in addition to those specified when deemed necessary to adequately describe the work covered in the respective technical specifications at no additional cost to the government.

C. Park approval of a submittal does not relieve the Contractor of the responsibility for any error which may exist. The Contractor is responsible for fully complying with all contract requirements and the satisfactory construction of all work, including the need to check, confirm, and coordinate the work of all subcontractors for the project. Non-compliant material incorporated in the work will be removed and replaced at the Contractor’s expense.

1.2 DEFINITIONS

A.	Preconstruction Submittals: Submittals which are required prior to issuing contract notice to proceed or starting construction. For example, Certificates of insurance; Surety bonds; Site-specific safety plan; Construction progress schedule; Schedule of values; Submittal register; List of proposed subcontractors.
B.	Shop Drawings: Drawings, diagrams, and schedules specifically prepared to illustrate some portion of the work. Drawings prepared by or for the Contractor to show how multiple systems and interdisciplinary work will be integrated and coordinated.
C.	Product Data: Catalog cuts, illustrations, schedules, diagrams, performance charts, instructions, and brochures, which describe and illustrate size, physical appearance, and other characteristics of materials, systems, or equipment for some portion of the work. Samples of warranty language when the contract requires extended product warranties.

D. Samples: Physical examples of materials, equipment, or workmanship that illustrate functional and aesthetic characteristics of a material or product and establish standards by which the work can be judged. Color samples from the manufacturer's standard line (or custom color samples if specified) to be used in selecting or approving colors for the project. Field samples and mock-ups constructed to establish standards by which the ensuing work can be judged.

E. Design Data: Calculations, mix designs, analyses, or other data pertaining to a part of work.

F. Test Reports: Report which includes findings of a test required to be performed by the Contractor on an actual portion of the work. Report which includes finding of a test made at the job site or on sample taken from the job site, on portion of work during or after installation.

G. Certificates: Document required of Contractor, or of a manufacturer, supplier, installer, or subcontractor through Contractor. The purpose is to document procedures, acceptability of methods, or personnel qualifications for a portion of the work.

H. Manufacturer's Instructions: Pre-printed material describing installation of a product, system, or material, including special notices and MSDS concerning impedances, hazards, and safety precautions.

I. Manufacturer's Field Reports: Documentation of the testing and verification actions taken by manufacturer's representative at the job site on a portion of the work, during or after installation, to confirm compliance with manufacturer's standards or instructions. The documentation must indicate whether the material, product, or system has passed or failed the test.

J. Operation and Maintenance Data: Manufacturer data that is required to operate, maintain, troubleshoot, and repair equipment, including manufacturer's help, parts list, and product line documentation. This data shall be incorporated in an operations and maintenance manual.

K. Closeout Submittals: Documentation necessary to properly close out a construction contract. For example, Record Drawings and as-built drawings. Also, submittal requirements necessary to properly close out a phase of construction on a multi-phase contract.

1.4 SUBMITTAL SCHEDULING

A.	Submittals are to be scheduled, submitted, reviewed, and approved prior to the acquisition of the material or equipment.
B.	Coordinate scheduling, sequencing, preparing, and processing of submittals with performance of work so that work will not be delayed by submittal processing. Allow time for potential resubmittal.
C.	No delay costs or time extensions will be allowed for time lost in late submittals or resubmittals.
D.	All submittals are required to be approved prior to the start of the specified work activity.

1.5 SUBMITTAL PREPARATION

A.	Each submittal is to be complete and in sufficient detail to allow ready determination of compliance with contract requirements.
B.	Collect required data for each specific material, product, unit of work, or system into a single submittal. Prominently mark choices, options, and portions applicable to the submittal. Partial submittals will not be accepted for expedition of construction effort. Submittal will be returned without review if incomplete.
C.	If available product data is incomplete, provide Contractor-prepared documentation to supplement product data and satisfy submittal requirements.
D.	All irrelevant or unnecessary data shall be removed from the submittal to facilitate accuracy and timely processing. Submittals that contain the excessive amount of irrelevant or unnecessary data will be returned without review.
E.	Provide a transmittal form for each submittal with the following information:

1. Project title, location and number.

2. Construction contract number.

3. Date of the drawings and revisions.

4. Name, address, and telephone number of subcontractor, supplier, manufacturer, and any other subcontractor associated with the submittal.

5. List paragraph number of the specification section and sheet number of the contract drawings by which the submittal is required.

6. When a resubmission, add alphabetic suffix on submittal description. For example, submittal 18 would become 18A, to indicate resubmission.

7. Product identification and location in project.

The Contractor is responsible for reviewing and certifying that all submittals are in compliance with contract requirements before submitting for VA review. Proposed deviations from the contract requirements are to be clearly identified. All deviations submitted must include a side by side comparison of item being proposed against item specified. Failure to point out deviations will result in the VA requiring removal and replacement of such work at the Contractor's expense.

Stamp, sign, and date each submittal transmittal form indicating action taken.

1.6 SUBMITTAL FORMAT AND TRANSMISSION

A.	Provide submittals in electronic format, with the exception of material samples. Use PDF as the electronic format, unless otherwise specified or directed by the Contracting Officer.
B.	Compile the electronic submittal file as a single, complete document. Name the electronic submittal file specifically according to its contents.
C.	Electronic files must be of sufficient quality that all information is legible. Generate PDF files from original documents so that the text included in the PDF file is both searchable and can be copied. If documents are scanned, Optical Character Resolution (OCR) routines are required.
D.	E-mail electronic submittal documents smaller than 5MB in size to e-mail addresses as directed by the Contracting Officer.
E.	Provide electronic documents over 5MB through an electronic FTP file sharing system. Confirm that the electronic FTP file sharing system can be accessed from the VA computer network. The Contractor is responsible for setting up, providing, and maintaining the electronic FTP file sharing system for the construction contract period of performance.
F.	Provide hard copies of submittals when requested by the Contracting Officer. Up to 3 additional hard copies of any submittal may be requested at the discretion of the Contracting Officer, at no additional cost to the VA.

1.7 SAMPLES

A.	Submit two sets of physical samples showing range of variation, for each required item.
B.	Where samples are specified for selection of color, finish, pattern, or texture, submit the full set of available choices for the material or product specified.
C.	When color, texture, or pattern is specified by naming a particular manufacturer and style, include one sample of that manufacturer and style, for comparison.
D.	Before submitting samples, the Contractor is to ensure that the materials or equipment will be available in quantities required in the project. No change or substitution will be permitted after a sample has been approved.
E.	The Park reserves the right to disapprove any material or equipment which previously has proven unsatisfactory in service.
F.	Physical samples supplied maybe requested back for use in the project after reviewed and approved.

1.10 PARK REVIEW OF SUBMITTALS AND RFIs

A.	The park will review all submittals for compliance with the technical requirements of the contract documents. Review will be only for conformance with the applicable codes, standards and contract requirements.
B.	Period of review for submittals begins when the park COR receives submittal from the Contractor.
C.	Period of review for each resubmittal is the same as for initial submittal.
D.	Park review period is 15 working days for submittals.
E.	Park review period is 10 working days for RFIs.
F.	The park will return submittals to the Contractor with the following notations:

1. "Approved": authorizes the Contractor to proceed with the work covered.

2. "Approved as noted": authorizes the Contractor to proceed with the work covered provided the Contractor incorporates the noted comments and makes the noted corrections.

3. "Disapproved, revise and resubmit": indicates noncompliance with the contract requirements or that submittal is incomplete. Resubmit with appropriate changes and corrections. No work shall proceed for this item until resubmittal is approved.

4. "Not reviewed": indicates submittal does not have evidence of being reviewed and approved by Contractor or is not complete. A submittal marked "not reviewed" will be returned with an explanation of the reason it is not reviewed. Resubmit submittals after taking appropriate action.

1.11 APPROVED SUBMITTALS

A.	The park approval of submittals is not to be construed as a complete check, and indicates only that the general method of construction, materials, detailing, and other information are satisfactory.
B.	Park approval of a submittal does not relieve the Contractor of the responsibility for any error which may exist. The Contractor is responsible for fully complying with all contract requirements and the satisfactory construction of all work, including the need to check, confirm, and coordinate the work of all subcontractors for the project. Non-compliant material incorporated in the work will be removed and replaced at the Contractor’s expense.
C.	After submittals have been approved, no resubmittal for the purpose of substituting materials or equipment will be considered unless accompanied by an explanation of why a substitution is necessary.
D.	Retain a copy of all approved submittals at project site, including approved samples.

1.12 WITHHOLDING OF PAYMENT

Payment for materials incorporated in the work will not be made if required approvals have not been obtained.

SECTION 07 31 13

ASPHALT SHINGLES

GENERAL

SUMMARY

Section Includes:

Fiberglass asphalt shingles over underlayment nailed to roof sheathing.

Top Cottage is a two story structure, Cape Cod style with a single dormer. The current roof is a single layer of 3 tab asphalt shingles. The roof decking is 1”x6” tongue and groove. The structure is in three sections all with gable roofs, abutting each-other as shown in overhead view. Roof pitch is approximately 13-12. There is one chimney at the eve of the structure with a “cricket” on the back side. There are three copper roof vent penetrations. The approximate building dimensions are: North Section 37’ long x 25’ wide; Center 43’ long x 27’ wide; South 40’ long x 27’ wide. The entire roof surface is an estimated 49 squares. All dimensions are approximate and it is entirely incumbent upon the bidder to verify quantities.

A single row two courses thick of cedar shingle is present along all eves under the asphalt shingles. This must be removed and replaced in kind.

The center section of the structure adjoins a covered porch with a flat seem metal roof. This porch roof is not to be replaced in this project but the adjoining shingles must transition in a waterproof fashion. And this existing roof must be fully protected from damage during replacement of the asphalt shingles. Any damage to existing porch roof will be repaired at contractor’s expense.

All three sections of structure are equipped with lightning protection along the roof peaks. This must be retained as is.

All bidders must perform a site visit prior to bidding to verify access and existing conditions.

RELATED REQUIREMENTS

Counterflashing and Flashing of Roof Projections: Section 07 60 00, FLASHING AND SHEET METAL.

Shingle Color: BLACK

APPLICABLE PUBLICATIONS

Comply with references to extent specified in this section.

ASTM International (ASTM):

D1970/D1970M15a - SelfAdhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.

D3018/D3018M11 - Class A Asphalt Shingles Surfaced with Mineral Granules.

D3161/D3161M15 - WindResistance of Steep Slope Roofing Products (FanInduced Method).

D3462/D3462M10a - Asphalt Shingles Made from Glass Felt and Surfaced with Mineral Granules.

F166705(2011) - Driven Fasteners: Nails, Spikes, and Staples.

UL LLC (UL):

79014 - Fire Tests of Roof Coverings.

SUBMITTALS

Submittal Procedures: Manufacturer's Literature and Data:

Description of each product.

Installation instructions.

Warranty.

Samples:

Shingles: Full size each type, color and texture.

Solar Reflectance Index (SRI) for asphalt shingles.

DELIVERY

Deliver products in manufacturer's original sealed packaging.

Mark packaging, legibly. Indicate manufacturer's name or brand, type, color, production run number, manufacture date, and the label of Underwriters Laboratories.

Before installation, return or dispose of products within distorted, damaged, or opened packaging.

STORAGE AND HANDLING

Store shingles according to manufacturer's instructions. Store roll goods on end in upright position.

Protect products from damage during handling and construction operations.

Keep materials dry, covered completely and protected from weather.

WARRANTY

Construction Warranty: FAR clause 52.24621, "Warranty of Construction."

Manufacturer's Warranty: Warrant asphalt shingles against material and manufacturing defects.

Material Warranty Period: 25 years.

WindSpeed Warranty Period: Resist wind speeds up to 97 km/h (60 mph) 5 years.

AlgaeResistance Warranty Period: No discoloration for 10 years.

PRODUCTS

PRODUCTS - GENERAL

Provide each product from one manufacturer.

Provide each product exposed to view from one production run.

Sustainable Construction Requirements:

Solar Reflectance Index: 29, minimum.

ASPHALT SHINGLES

Asphalt Shingles: Fiberglass reinforced, laminated type, square butt. Three tab, Black.

ASTM D3462/D3462M and ASTM D3018/D3018M, Type I, selfsealing.

ASTM D3161/D3161M, Class D or F windresistant.

UL 790 Class A fire resistance.

Minimum Weight: 10.3 kg/sq. m (210 lbs./100 sq. ft.).

ROOFING NAILS

ASTM F1667, Type I, Style 20, galvanized steel, deformed shanks, heads 10 mm to 11 mm (3/8 inch to 7/16 inch) diameter.

Nails for Shingles: 32 mm (11/4 inches) long.

Nails for Felt: 19 mm (3/4 inch) long.

ROOFING UNDERLAYMENT

SelfAdhering Modified Bituminous Underlayment: ASTMD1970/D1970M. FULL DECK - EVE TO RIDGE

METAL FLASHING

Provide metal roof flashings, including apron flashings, step flashings, valley flashings, drip edges, and vent pipe flashings specified in Section 07 60 00, FLASHING AND SHEET METAL.

Existing Copper flashing may be retained where still viable. Should contractor determine that flashing is still viable for retention contractor must be willing to warrantee it as if new work. EXCEPT in valley of dormer and cricket behind fireplace (must be replaced with new).

EXECUTION

PREPARATION

Examine and verify substrate suitability for roofing installation.

Verify roof substrates are sound, within manufacturer's tolerances, and free from defects which would interfere with roofing installation.

Replace any defective decking with like material (1”x 6” tongue and groove planks) Assume 15% decking replacement in bid.

Verify roof accessories, vent pipes and other projections through roof are in place and roof flashing is installed, or ready for installation, before installing shingles.

Protect existing construction and completed work from damage.

INSTALLATION - GENERAL

Install products according to manufacturer's instructions and approved submittal drawings.

When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

METAL DRIP EDGE INSTALLATION

At eaves and rakes, copper drip edge is present on all rakes and may be reused is deemed viable.

Eaves: No drip edge currently present. Copper drip edge to be supplied and installed by contractor. Install metal drip edge before underlayment.

Rakes: Install metal drip edge after underlayment.

Secure metal drip edges with compatible nails spaced maximum 250 mm (10 inches) on center along inner edges.

FLASHING INSTALLATION

Install metal flashings at intersections of roofs, adjoining walls, or projections through deck such as chimneys and vent stacks.

Install metal valley flashing where present.

Secure valley flashing according to shingle manufacturer's instructions.

Expose flashing in open portion of valley 125 mm (5 inches) minimum, and lap shingles over flashing 125 mm (5 inches) minimum.

Existing Copper flashing may be retained where still viable. EXCEPT in valley of dormer and cricket behind fireplace (must be replaced with new). Bidder should include minimum expectation of 15% replacement of all other copper flashing.

UNDERLAYMENT INSTALLATION

Install selfadhering sheet underlayment, working from low point to high point. Lap sides 90 mm (31/2 inches) minimum, and lap ends 150 mm (6 inches) minimum. Install at the following locations:

Eaves and Rakes: From edge of eave and rake to 600 mm (24 inches) minimum beyond inside face of exterior wall.

Lap underlayment over eave metal drip edge.

Valleys, Hips and Roof Slope Transitions: Centered over change in slope, and extended 450 mm (18 inches) minimum on both sides.

Ridges: Centered on ridge, and extended 900 mm (36 inches) minimum on both sides.

Sidewalls and Projections through Roof: Extended 450 mm (18 inches) from projection, and extended up projection 100 mm (4 inches) minimum.

Firmly roll underlayment to ensure adhesion to roof deck and metal flashings.

Entire roof surface shall be covered in ice and water damn self-adhering. No felt.

ROOF ACCESSORY INSTALLATION

Lap underlayment and asphalt shingles over upslope base flanges of roof accessory flashings.

Install underlayment and asphalt shingles over sideslope base flanges of roof accessory flashings.

Install downslope base flanges of roof accessories over asphalt shingles.

ASPHALT SHINGLE INSTALLATION

Install shingles aligned parallel to roof eave, nailed to roof sheathing.

Exposure: 125 mm (5 inches) maximum.

Headlap: 50 mm (2 inches) minimum.

Install asphaltshingle starter strip with tabs removed, and overhanging lower edge of roof 13 mm (1/2 inch).

Install single row two courses thick of cedar shingle along all eves to mimic current site conditions.

Valleys: Open.

RIDGE SHINGLE INSTALLATION

Bend each shingle lengthwise down center to provide equal exposure on both sides of ridge.

Begin ridge installation at leeward end of ridge.

Install shingles with maximum 125 mm (5 inches) exposure.

Secure each shingle with one nail on both sides of ridge, 215 mm (81/2 inches) back from exposed end and one inch up from edge.

SECTION 07 60 00

FLASHING AND SHEET METAL

PART 1 - GENERAL

1.1 DESCRIPTION

Formed sheet metal work for wall and roof flashing, copings, roof edge metal, fasciae, drainage specialties, and formed expansion joint covers are specified in this section.

1.2 RELATED WORK

A.	Manufactured flashing, copings, roof edge metal, and fasciae: Section 07 71 00 ROOF SPECIALTIES.
B.	Membrane base flashings and stripping: Section 07 52 16 MODIFIED BITUMINOUS MEMBRANE ROOFING.

1.3 APPLICABLE PUBLICATIONS

A.	Publications listed below form a part of this specification to the extent referenced. Publications are referenced in the text by the basic designation only. Editions of applicable publications current on date of issue of bidding documents apply unless otherwise indicated.
E.	ASTM International (ASTM):
B370-12	Copper Sheet and Strip for Building Construction
D4586-07	Asphalt Roof Cement, Asbestos Free
G.	National Association of Architectural Metal Manufacturers (NAAMM):
AMP 500-06	Metal Finishes Manual
H.	Federal Specification (Fed. Spec):
A-A-1925A	Shield, Expansion; (Nail Anchors)
I.	International Code Commission (ICC): International Building Code, Current Edition

1.4 PERFORMANCE REQUIREMENTS

A.	Wind Uplift Forces: Resist the following forces per FM Approvals 1-49:
3.	Wind Zone 2: 1.48 to 2.15 kPa (31 to 45 lbf/sq. ft.): 4.31-kPa (90-lbf/sq. ft.) perimeter uplift force, 5.74-kPa (120-lbf/sq. ft.) corner uplift force, and 2.15-kPa (45-lbf/sq. ft.) outward force.
B.	Wind Design Standard: Fabricate and install copings, roof-edge flashings tested per ANSI/SPRI ES-1 to resist design pressure.

1.5 SUBMITTALS

A.	Submit in accordance with Section 01 33 23, PRODUCT DATA, AND SAMPLES.
C.	Manufacturer's Literature and Data: For all specified items, including:
1.	Two-piece counterflashing
2.	Thru wall flashing
3.	Expansion joint cover, each type
4.	Nonreinforced, elastomeric sheeting
D.	Certificates: Indicating compliance with specified finishing requirements, from applicator and contractor.

PART 2 - PRODUCTS

2.1 FLASHING AND SHEET METAL MATERIALS

B. Copper ASTM B370, cold-rolled temper.

2.2 FLASHING ACCESSORIES

A.	Solder: ASTM B32; flux type and alloy composition as required for use with metals to be soldered.
B.	Rosin Paper: Fed-Spec. UU-B-790, Type I, Grade D, Style 1b, Rosin-sized sheathing paper, weighing approximately 3 Kg/10 m²( 6 lbs/100 sf).
C.	Bituminous Paint: ASTM D1187, Type I.
D.	Fasteners:
1.	Use copper, copper alloy, bronze, brass, or stainless steel for copper.
2.	Nails:
a.	Minimum diameter for copper nails: 3 mm (0.109 inch).
d.	Length to provide not less than 22 mm (7/8 inch) penetration into anchorage.
3.	Rivets: Not less than 3 mm (1/8 inch) diameter.
4.	Expansion Shields: Fed Spec A-A-1925A.
G.	Roof Cement: ASTM D4586.

2.3 SHEET METAL THICKNESS

A.	Except as otherwise shown or specified use thickness or weight of sheet metal as follows:
B.	Concealed Locations (Built into Construction):
1.	Copper: 30g (10 oz) minimum 0.33 mm (0.013 inch thick).
C.	Exposed Locations:
1.	Copper: 0.4 Kg (16 oz).

2.4 FABRICATION, GENERAL

A.	Jointing:
1.	In general, copper, stainless steel and copper clad stainless steel joints, except expansion and contraction joints, shall be locked and soldered.
2.	Jointing of copper over 0.5 Kg (20 oz) weight or stainless steel over 0.45 mm (0.018 inch) thick shall be done by lapping, riveting and soldering.
3.	Joints shall conform to following requirements:
a.	Flat-lock joints shall finish not less than 19 mm (3/4 inch) wide.
b.	Lap joints subject to stress shall finish not less than 25 mm (one inch) wide and shall be soldered and riveted.
c.	Unsoldered lap joints shall finish not less than 100 mm (4 inches) wide.
4.	Flat and lap joints shall be made in direction of flow.
6.	Soldering:
a.	Pre tin both mating surfaces with solder for a width not less than 38 mm (1 1/2 inches) of uncoated copper, stainless steel, and copper clad stainless steel.
b.	Wire brush to produce a bright surface before soldering lead coated copper.
c.	Treat in accordance with metal producers recommendations other sheet metal required to be soldered.
d.	Completely remove acid and flux after soldering is completed.
E.	Drips:
1.	Form drips at lower edge of sheet metal counter-flashings (cap flashings), fascias, gravel stops, wall copings, by folding edge back 13 mm (1/2 inch) and bending out 45 degrees from vertical to carry water away from the wall.
2.	Form drip to provide hook to engage cleat or edge strip for fastening for not less than 19 mm (3/4 inch) loose lock where shown.
F.	Edges:
1.	Edges of flashings concealed in masonry joints opposite drain side shall be turned up 6 mm (1/4 inch) to form dam, unless otherwise specified or shown otherwise.
2.	Finish exposed edges of flashing with a 6 mm (1/4 inch) hem formed by folding edge of flashing back on itself when not hooked to edge strip or cleat. Use 6 mm (1/4 inch) minimum penetration beyond wall face with drip for through-wall flashing exposed edge.
3.	All metal roof edges shall meet requirements of IBC, current edition.

2.5 FINISHES

A.	Use same finish on adjacent metal or components and exposed metal surfaces unless specified or shown otherwise.
B.	In accordance with NAAMM Metal Finishes Manual AMP 500, unless otherwise specified.
C.	Finish exposed metal surfaces as follows, unless specified otherwise:
1.	Copper: Mill finish.

2.7 BASE FLASHING

A.	Use metal base flashing at vertical surfaces intersecting built-up roofing without cant strips.
1.	Use copper.
2.	When flashing is over 250 mm (10 inches) in vertical height or horizontal width use either 0.5 Kg (20 oz) copper.
4.	Use copper at pipe flashings.
B.	Fabricate metal base flashing up vertical surfaces not less than 200 mm (8 inch) nor more than 400 mm (16 inch).
C.	Fabricate roof flange not less than 100 mm (4 inches) wide unless shown otherwise. When base flashing length exceeds 2400 mm (8 feet) form flange edge with 13 mm (1/2 inch) hem to receive cleats.
D.	Form base flashing bent from strip except pipe flashing. Fabricate ends for riveted soldered lap seam joints. Fabricate expansion joint ends as specified.
E.	Pipe Flashing: (Other than engine exhaust or flue stack)
1.	Fabricate roof flange not less than 100 mm (4 inches) beyond sleeve on all sides.
2.	Extend sleeve up and around pipe and flange out at bottom not less than 13 mm (1/2 inch) and solder to flange and sleeve seam to make watertight.
3.	At low pipes 200 mm (8 inch) to 450 mm (18 inch) above roof:
a.	Form top of sleeve to turn down into the pipe at least 25 mm (one inch).
b.	Allow for loose fit around and into the pipe.
4.	At high pipes and pipes with goosenecks or other obstructions which would prevent turning the flashing down into the pipe:
a.	Extend sleeve up not less than 300 mm (12 inch) above roofing.
b.	Allow for loose fit around pipe.

2.8 COUNTERFLASHING (CAP FLASHING OR HOODS)

A.	Copper.
B.	Fabricate to lap base flashing a minimum of 100 mm (4 inches) with drip:
1.	Form lock seams for outside corners. Allow for lap joints at ends and inside corners.
2.	In general, form flashing in lengths not less than 2400 mm (8 feet) and not more than 3000 mm (10 feet).
3.	Two-piece, lock in type flashing may be used in-lieu-of one piece counter-flashing.
4.	Manufactured assemblies may be used.
5.	Where counterflashing is installed at new work use an integral flange at the top designed to be extended into the masonry joint or reglet in concrete.
6.	Where counterflashing is installed at existing work use surface applied type, formed to provide a space for the application of sealant at the top edge.
C.	One-piece Counterflashing:
1.	Back edge turned up and fabricate to lock into reglet in concrete.
2.	Upper edge formed to extend full depth of masonry unit in mortar joint with back edge turned up 6 mm (1/4 inch).
D.	Two-Piece Counterflashing:
1.	Receiver to extend into masonry wall depth of masonry unit with back edge turned up 6 mm (1/4 inch) and exposed edge designed to receive and lock counterflashing upper edge when inserted.
2.	Counterflashing upper edge designed to snap lock into receiver.
E.	Surface Mounted Counterflashing; one or two piece:
1.	Use at existing or new surfaces where flashing can not be inserted in vertical surface.
2.	One piece fabricate upper edge folded double for 65 mm (2 1/2 inches) with top 19 mm (3/4 inch) bent out to form "V" joint sealant pocket with vertical surface. Perforate flat double area against vertical surface with horizontally slotted fastener holes at 400 mm (16 inch) centers between end holes. Option: One piece surface mounted counter-flashing (cap flashing) may be used. Fabricate as detailed on Plate 51 of SMACNA Architectural Sheet Metal Manual.
3.	Two pieces: Fabricate upper edge to lock into surface mounted receiver. Fabricate receiver joint sealant pocket on upper edge and lower edge to receive counterflashing, with slotted fastener holes at 400 mm (16 inch) centers between upper and lower edge.
F.	Pipe Counterflashing:
1.	Form flashing for water-tight umbrella with upper portion against pipe to receive a draw band and upper edge to form a "V" joint sealant receiver approximately 19 mm (3/4 inch) deep.
2.	Fabricate 100 mm (4 inch) over lap at end.
3.	Fabricate draw band of same metal as counter flashing. Use 0.6 Kg (24 oz) copper or 0.33 mm (0.013 inch) thick stainless steel or copper coated stainless steel.
4.	Use stainless steel bolt on draw band tightening assembly.
5.	Vent pipe counter flashing may be fabricated to omit draw band and turn down 25 mm (one inch) inside vent pipe.
G.	Where vented edge decks intersect vertical surfaces, form in one piece, shape to slope down to a point level with and in front of edge-set notched plank; then, down vertically, overlapping base flashing.

2.11 HANGING GUTTERS

A. Retain existing gutters, clear as needed. Remove and reinstall if required by other work.

PART 3 - EXECUTION

3.1 INSTALLATION

A.	General:
1.	Install flashing and sheet metal items as shown in Sheet Metal and Air Conditioning Contractors National Association, Inc., publication, ARCHITECTURAL SHEET METAL MANUAL, except as otherwise shown or specified.
2.	Apply Sealant as specified in Section 07 92 00, JOINT SEALANTS.
3.	Apply sheet metal and other flashing material to surfaces which are smooth, sound, clean, dry and free from defects that might affect the application.
4.	Remove projections which would puncture the materials and fill holes and depressions with material compatible with the substrate. Cover holes or cracks in wood wider than 6 mm (1/4 inch) with sheet metal compatible with the roofing and flashing material used.
5.	Coordinate with masonry work for the application of a skim coat of mortar to surfaces of unit masonry to receive flashing material before the application of flashing.
7.	Confine direct nailing of sheet metal to strips 300 mm (12 inch) or less wide. Nail flashing along one edge only. Space nail not over 100 mm (4 inches) on center unless specified otherwise.
8.	Install bolts, rivets, and screws where indicated, specified, or required in accordance with the SMACNA Sheet Metal Manual. Space rivets at 75 mm (3 inch) on centers in two rows in a staggered position. Use neoprene washers under fastener heads when fastener head is exposed.
9.	Coordinate with roofing work for the installation of metal base flashings and other metal items having roof flanges for anchorage and watertight installation.
10.	Nail continuous cleats on 75 mm (3 inch) on centers in two rows in a staggered position.
11.	Nail individual cleats with two nails and bend end tab over nail heads. Lock other end of cleat into hemmed edge.
12.	Install flashings in conjunction with other trades so that flashings are inserted in other materials and joined together to provide a water tight installation.

3.3 BASE FLASHING

A.	Install where roof membrane type base flashing is not used.
1.	Install flashing at intersections of roofs with vertical surfaces or at penetrations through roofs, to provide watertight construction.
2.	Install metal flashings and accessories having flanges extending out on top of the built-up roofing before final bituminous coat and roof aggregate is applied.
3.	Set flanges in heavy trowel coat of roof cement and nail through flanges into wood nailers over bituminous roofing.
4.	Secure flange by nailing through roofing into wood blocking with nails spaced 75 mm (3 inch) on centers or, when flange over 100 mm (4 inch) wide terminate in a 13 mm (1/2 inch) folded edge anchored with cleats spaced 200 mm (8 inch) on center. Secure one end of cleat over nail heads. Lock other end into the seam.
B.	For long runs of base flashings install in lengths of not less than 2400 mm (8 feet) nor more than 3000 mm (ten feet). Install a 75 mm (3 inch) wide slip type, loose lock expansion joint filled with sealant in joints of base flashing sections over 2400 mm (8 feet) in length. Lock and solder corner joints at corners.
C.	Extend base flashing up under counter flashing of roof specialties and accessories or equipment not less than 75 mm (3 inch).

3.4 COUNTERFLASHING (CAP FLASHING OR HOODS)

A.	General:
1.	Install counterflashing over and in conjunction with installation of base flashings, except as otherwise specified or shown.
2.	Install counterflashing to lap base flashings not less than 100 mm (4 inch).
3.	Install upper edge or top of counterflashing not less than 225 mm (9 inch) above top of the roofing.
4.	Lap joints not less than 100 mm (4 inch). Stagger joints with relation to metal base flashing joints.
5.	Use surface applied counterflashing on existing surfaces and new work where not possible to integrate into item.
6.	When fastening to concrete or masonry, use screws driven in expansion shields set in concrete or masonry. Use screws to wood and sheet metal. Set fasteners in mortar joints of masonry work.
B.	One Piece Counterflashing:
2.	Where flashing is installed in reglet in concrete insert upper edge into reglet. Hold flashing in place with lead wedges spaced not more than 200 mm (8 inch) apart. Fill joint with sealant.
3.	Where flashing is surface mounted on flat surfaces.
a.	When top edge is double folded anchor flat portion below sealant "V" joint with fasteners spaced not over 400 mm (16 inch) on center:
1)	Locate fasteners in masonry mortar joints.
2)	Use screws to sheet metal or wood.
b.	Fill joint at top with sealant.
C.	Two-Piece Counterflashing:
1.	Where receiver is installed at new masonry coordinate to insure proper height, embed in mortar, and lap.
2.	Surface applied type receiver:
a.	Secure to face construction in accordance, with manufacturer’s instructions.
b.	Completely fill space at the top edge of receiver with sealant.
3.	Insert counter flashing in receiver in accordance with fabricator or manufacturer's instructions and to fit tight against base flashing.
D.	Where vented edge occur install so lower edge of counterflashing is against base flashing.

3.7 COPINGS

A.	General:
1.	On walls topped with a wood plank, install a continuous edge strip on the front // and rear // edge of the plank. Lock the coping to the edge strip with a 19 mm (3/4 inch) loose lock seam.
2.	Where shown turn down roof side of coping and extend down over base flashing as specified for counter-flashing. Secure counter-flashing to lock strip in coping at continuous cleat.
3.	Install ends adjoining existing construction so as to form space for installation of sealants. Sealant is specified in Section 07 92 00, JOINT SEALANTS.
C.	Copper Copings:
1.	Join ends of sheets by a 19 mm (3/4 inch) locked and soldered seam, except at intervals of 9600 mm (32 feet), provide a 38 mm (1 1/2 inch) loose locked expansion joint filled with sealant or mastic.
2.	At straight runs between 7200 mm (24 feet) and 19200 mm (64 feet) locate expansion joint at center.
3.	At straight runs that exceed 9600 mm (32 feet) and form the leg of a corner locate the expansion joint not more than 4800 mm (16 feet) from the corner.

3.10 HANGING GUTTERS

A.	Hang gutters with high points equidistant from downspouts. Slope at not less than 1:200 (1/16 inch per foot).
B.	Lap joints, except for expansion joints, at least 25 mm (one inch) in the direction of flow. Rivet and seal or solder lapped joints.
C.	Support gutters in brackets spaced not more than 600 mm (24 inch) on centers, brackets attached to facial or wood nailer by at least two screws or nails.
1.	For copper or copper clad stainless steel gutters use brass or bronze brackets.
4.	Use brass or stainless steel screws.

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