Attachment_1_Statement_of_Work.pdf

FY15 Re-roof buildings Fort Vancouver NHS Attachment 1: Statement of Work

SECTION 01010

SUMMARY OF WORK

PART 1: GENERAL

1-1 DESCRIPTION:

A. This contract consists of re-roofing the Fur Warehouse and Indian Trade Shop at Fort Vancouver National Historic Site.

B. This contract includes options to perform additional roofing work at the same work site. These options are for installation only; NPS will furnish the roofing material, including felt, roof covering material, and ridge materials.

C. Complete descriptions of the buildings are in Attachment 2.

D. All buildings will be occupied during the work of this contract. Contractor must minimize disruption to occupants and insure safe access to and from entrances.

E. No work may occur other than between the hours of 7:00 a.m. and 5:30 p.m., Monday through Friday. No work may occur on Federal Holidays except with the prior approval of COR.

F. Maps and park information may be viewed at www.nps.gov/fova.

G. All work will be performed under a single contract.

1-2 LOCATION: The Fur Warehouse and Indian Trade Shop buildings are located inside the reconstructed stockade at 1001 E 5th Street, Vancouver, WA, while the two buildings in Bid Option A are located at 612 E Reserve St., Vancouver, WA 98661.

1-3 CONTRACTOR’S USE OF PREMISES:

A. Construction Camp: Establishment of a camp within the park will not be permitted.

B. Contractor shall at all times conduct their operations to ensure the least inconvenience to the public.

C. Materials storage: Storage of construction materials will be allowed on-site, at a location designated by the Contracting Officer's Representative. Storage of hazardous materials must meet all federal, state, and local guidelines and regulations. On-site storage of the Contractor’s materials does not imply acceptance or protection of them by the Government.

D. Preservation of natural features: Confine all operations to work limits of the project. Prevent damage to natural surroundings. Provide temporary barriers to protect existing trees and http://www.nps.gov/fova plants and root zones. Restore damaged areas, by repairing or replacing damaged trees and plants, at no additional expense to the Government.

1. Provide temporary barriers to protect existing trees and root zones.

2. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with

Contracting Officer and remove agree-on roots and branches that interfere with construction.

3. Do not fasten ropes, cables, or guys to existing trees.

E. Existing Utilities: Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

F. Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials.

G. Contractor must not display signs or advertisements (except those specified herein) on the construction site except with prior approval of the Contracting Officer.

1-4 FIELD VERIFICATION: Field verify all new and existing dimensions affecting the work of this contract before ordering products.

PART 2: PRODUCTS – Not used.

PART 3: EXECUTION – Not used.

END

SECTION 01270

DEFINITION OF LINE ITEMS

PART 1 GENERAL

1-1 DESCRIPTION

The intent of this section is to explain, in general, what is and what is not included in a line item, and the limits or cut-off points where one line item ends and another begins. If no line item exists for a portion of the work, include the costs in a related line item.

1-2 LINE ITEM NO. 1 – Replace Roof on Fur Warehouse

This line consists of all material, labor and equipment necessary to replace the cedar shake roof on the Fur Warehouse.

1-3 LINE ITEM NO. 2 – Replace Roof on Indian Trade Shop

This line consists of all material, labor and equipment necessary to replace the cedar shake roof on the Indian Trade Shop.

1-3 OPTIONAL LINE ITEMS

A. Option A – Replace Roof on Administration Building & Park Residence This line consists of all labor and equipment necessary to replace two asphalt shingle roofs.

B. Option B – Replace Roof on Kitchen This line consists of all labor and equipment necessary to replace wood board roof on the Kitchen.

C. Option C – Replace Roof on Blacksmith Shop This line consists of all labor and equipment necessary to replace wood board roof on the Blacksmith Shop.

PART 2 PRODUCTS NOT USED.

PART 3 EXECUTION NOT USED.

SECTION 01300

SUBMITTALS

1-1 DESCRIPTION: The work of this section consists of submittal requirements before and during construction.

1-2 RELATED REQUIREMENTS: Closeout submittals – 01700.

1-3 REQUIRED SUBMITTALS:

A. No on-site work may occur before the COR approves all submittals.

B. All submittals become the property of the Government.

C. Contractor must submit the following to COR at least ten working days before start of on-site work.

a. List of proposed subcontractors.

b. List of proposed products.

c. Construction Progress Schedule.

d. Accident Prevention Plan.

e. Manufacturer’s certification or other data substantiating that the materials and finishes comply with contract requirements for cedar shakes. The submittals must show manufacturer’s recommendations for installation.

f. Warranty certificates. Furnish a written 5-year performance guarantee against a defective roofing system, including repairing to maintain a watertight condition. During the five-year period, the Contractor must repair all leaks without cost to the government. Before beginning work, report to Contracting Officer if any specification requirements conflict with product manufacturer's warranty requirements.

SECTION 01310

PROJECT MEETINGS

1-1 PRECONSTRUCTION CONFERENCE

Before the start of the project, the Contracting Officer will arrange a meeting with the Contractor to be held at NPS offices at Fort Vancouver National Historic Site, Vancouver, WA. Contractor and subcontractors may participate by phone with prior approval from the Contracting Officer.

1-2 PROGRESS MEETINGS

Contractor will hold weekly progress meetings with COR.

PART 2: PRODUCTS-NOT USED

PART 3: EXECUTION-NOT USED

SECTION 013523

SAFETY REQUIREMENTS

1-1 DESCRIPTION: The work of this section consists of establishing an effective accident prevention program and providing a safe environment for all personnel and visitors.

1-2 REQUIRED SUBMITTALS

Accident Prevention Plan: At or before the pre-construction conference, the Contractor must submit for approval of the Contracting Officer a written safety plan demonstrating compliance with all applicable federal and state safety regulations.

PART 2: PRODUCTS

2-1 ACCIDENT PREVENTION PLAN

The site-specific plan shall be written to comply with OSHA and project requirements (a generic plan is not acceptable).

2-2 FIRST AID FACILITIES

Provide adequate facilities for the number of employees and the hazards associated with the types of ongoing construction work at the site.

2-3 PERSONNEL PROTCTIVE EQUIPMENT

Meet requirements of applicable ANSI standards.

PART 3: EXECUTION

3-1 The Contractor must comply with all OSHA federal regulations (29 CFR 1910) and

Washington state regulations governing the safety of workers performing the type of work described in this contract.

SECTION 01510

TEMPORARY SERVICES

1-1 DESCRIPTION: The work in this section consists of providing temporary services for

Contractor’s performance of the work of this Contract.

PART 2: PRODUCTS

2-1 GENERAL: Temporary material may be new or used, but must be adequate in capacity for the usage, must not create unsafe conditions, and must not violate requirements of applicable codes and standards.

2-2 SANITARY FACILITIES: Contractor’s personnel may utilize the public restrooms located in the Wash House.

2-3 FIRE PROTECTION EQUIPMENT: UL Class2A, 2-1/2 gallon water type, stored-pressure extinguisher and UL Class 10, Type I, 15-pound B:C carbon dioxide extinguisher.

PART 3: EXECUTION

3-1 ELECTRICAL: NPS will provide electrical service via 20-amp duplex outlet at each job location, as designated by the COR. The Contractor must use distribution materials provided at Contractor’s expense and installed/removed in a professional and safe manner. The Contractor and employees are expected to conserve energy.

3-2 TELEPHONE: There are no public telephones available at this site. Contractor should rely on cellular phones.

3-3 WATER: Nominal quantities of potable water are available at the Wash House.

3-4 FIRE PREVENTION AND PROTECTION:

A. Hazard Control: The contractor must take all necessary precautions to prevent fire during construction. The Contractor must not store flammable or combustible liquids in non-approved containers and provide adequate ventilation during use of volatile or noxious substances.

B. The Contractor must provide all equipment and procedures for fire protection on site. The Contractor must assign a capable and qualified person on site in charge of fire protection at all times. The responsibilities include locating and maintaining fire protective equipment and establishing and maintaining safe working procedures.

C. Spark Arresters: Equip all gasoline or diesel powered equipment with spark arresters approved by the U. S. Forest Service. Locate internal combustion equipment so that exhausts discharge well away from combustible materials.

D. Smoking within reconstructed stockade is prohibited.

SECTION 01530

BARRIERS

1-1 DESCRIPTION: The work of this section consists of furnishing, installing, and maintaining barriers to protect existing facilities and the public from reroofing operations.

PART 2: PRODUCTS

2-1 GENERAL: Material may be new of used, but shall be suitable for intended purpose. Fences and barriers shall be structurally adequate and neat in appearance.

2-2 BARRICADES AND SIGNS: ANSI D6. 1-78, “Manual if Uniform Traffic Control Device:

(MUTCD), Part VI.

2-3 LUMBER: Free of nails, large knot holes, and splinters.

2-4 BARRIER TAPE: Banner Guard, imprinted with “CAUTION: CONSTRUCTION AREA,” manufactured by Reef Industries, Inc., Houston, Texas, or approved equal.

3-1 PROTECTION OF PUBLIC:

A. Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry to the work area.

B. Erect, and maintain barricades, lights, danger signals, and warning signs in accordance the

ANSI D6. 1-78.

C. Cover pipes, hoses, and power lines crossing sidewalks and walkways with troughs using beveled edge boards.

3-2 BARRIER TAPE: Install where directed by COR.

3-3 REMOVAL: Completely remove barriers no longer needed and when approved by COR.

SECTION 01570

TEMPORARY CONTROLS

1-1 DESCRIPTION: The work in this section consists of providing temporary controls.

PART 2: PRODUCTS – Not used.

3-1 HOUSEKEPEING:

A. Keep project neat, orderly, and in a safe condition at all times.

B. Provide enough refuse containers for collecting roofing materials and other construction debris.

C. Wet-down dry material and rubbish to prevent blowing dust.

D. Keep volatile wastes in covered containers.

3-2 DISPOSAL:

A. Unless otherwise specified, all salvaged materials become property of the Contractor and shall be disposed of outside the park.

B. Immediately remove hazardous rubbish from project site. Place other construction debris in refuse containers at least daily. Dispose of refuse at least biweekly, in a legal manner, at public or private dumping area outside the park.

C. Recycling is highly encouraged. One local source that will accept clean wood debris is:

H&H Wood Recyclers 8401 NE 17th Ave Vancouver, WA 98662

D. Provide COR with waste manifests for all materials.

SECTION 01700

PROJECT CLOSEOUT

1-1 DESCRIPTION: The work in this section consists of final cleanup, closeout submittals, and final inspection procedures.

PART 2: PRODUCTS

2-1 CLEANING MATERIALS: As recommended by the manufacturer of surface to be cleaned.

PART 3: EXECUTION

3-1 CLEANING: Remove all tools, equipment, surplus materials, and rubbish. Restore or refinish surfaces of existing facilities that are marred, scratched, or damaged due to the work of this contract to match original condition. Remove grease, dirt, stains, foreign materials, and labels from interior and exterior finished surfaces. Sweep paved areas; rake grounds. At time of final inspection, project shall be thoroughly clean and ready for use.

3-2 CLOSEOUT SUBMITTALS: Submit before final inspection request.

A. Certificate(s) showing quantities of recycled materials with name and phone number of recycling facility.

B. Guarantees and Bonds: As specified in individual sections.

C. Spare Parts and Materials: As specified in individual sections.

3-3 SUBSTANTIAL COMPLETION AND FINAL INSPECTION: Submit written certification that project, or designated portion of project, is substantially complete, and request in writing, a final inspection. Contracting Officer will make an inspection within 10 days of receipt of request.

A. When Contracting Officer determines that the work is substantially complete, they will prepare a list of deficiencies that need to be corrected before final acceptance and issue a Letter of Substantial Completion.

B. If Contracting Officer determines that the work is not substantially complete, they will immediately notify Contractor in writing, stating reasons. After completing work, Contractor shall resubmit certification and request a new final inspection.

3-4 ACCEPTANCE OF WORK: After all deficiencies have been corrected, a Letter of Acceptance will be issued.

3-5 POST-CONSTRUCTION INSPECTION: Before expiration of warranty period, Contracting Officer will inspect project and notify Contractor in writing of all deficiencies.

SECTION 02224

SELECTIVE DEMOLITION

The work of this section consists of removal of the existing roof covering(s), nails and related fasteners, flashing and any underlayment materials. The work includes removal, salvage, and disposal.

1-2 RELATED WORK

Section 06100: Rough carpentry

1-3 SUBMITTALS

A. As specified in Section 01330.

B. Submit schedule showing sequence of work and methods of demolition.

1-4 QUALITY ASSURANCE

Comply with safety requirements for demolition, ANSI A10 Series.

1-5 PROJECT CONDITIONS

A. Keep dust and dirt pollution to a minimum.

B. Ensure safety of persons in demolition area. Provide temporary barricades as required.

C. Provide adequate fire protections. Keep area clear of hazardous substances and debris.

D. Maintain access to exits at all times.

E. Provide temporary weather protection to prevent damage to structure and interior.

1-6 SCHEDULING

Complete demolition that might damage new construction before starting new work.

PART 2: PRODUCTS - NOT USED.

3-1 PREPARATION

Provide temporary supports and protection for portion of structure to remain. Protect fixtures and equipment to remain. Protect nearby structures and vegetation as necessary.

3-2 DEMOLITION

A. Work systematically.

B. Avoid excessive loads on supporting walls, floors, and framing by careful location of equipment and prompt removal of demolished materials.

C. Storage Area: Before removal from the site, stockpile materials in area(s) designated by the Contacting Officer’s Representative.

D. Completely remove all fasteners from sheathing boards to remain by pulling them.

E. Clean all shake fragments, fasteners, and other debris from the exterior and interior of the building and between the sheathing boards.

F. Notify Contracting Officer of any deteriorated sheathing. Remove and replace only if so directed by the Contracting Officer in writing (see 3-4).

3-3 RESTORATION AND CLEAN-UP

A. Repair and clean adjacent surfaces damaged or soiled by demolition work.

B. Remove equipment, temporary protection and barriers, and debris. Dispose of unsalvageable material as specified in Section 01570.

3-4 INSPECTION

Upon completion of removing existing roofing materials and before installation of any portion of the new roof system, obtain approval from the COR as to the soundness of the underlying structure. If necessary, the Contracting Officer will modify this contract for correction of noted deficiencies or use Government personnel to make repairs to the sheathing or other substructure.

SECTION 06100

ROUGH CARPENTRY

The work of this section consists of replacing any decayed roof sheathing as directed by the Contracting Officer.

1-2 RELATED WORK

A. Section 07301: Shake Roof B. Section 07310: Asphalt Shingle C. Section 07311: Wood Board Roof

1-3 SUBMITTALS

As specified in Section 01330.

PART 2: PRODUCTS

2-1 LUMBER

If necessary, and only after being directed by the Contracting Officer, repair any damaged or rotten sheathing boards within the entire roof area and nail with 8d galvanized nails. The Government may furnish sheathing materials.

2-2 ROUGH HARDWARE

Unless otherwise specified, use hot dipped galvanized nails.

3-1 GENERAL INSTALLATION

Install rough carpentry work in accordance with Uniform Building Code, latest edition.

3-2 CONDITION OF SURFACES

Verify that surfaces to receive rough carpentry materials are in suitable condition.

SECTION 07301

SHAKE ROOF

1-1 DESCRIPTION: The work of this section consists of all shake roofing work at the Fur

Warehouse and Indian Trade Shop.

1-2 QUALITY ASSURANCE:

A. Standards. Cedar Shake and Shingle Bureau (CSSB).

B. UL rating. Provide materials which have been treated with the fire-retardant treatment for

“Class C” rating by UL.

1-3 SUBMITTALS: In accordance with Section 01300, submit:

A. Manufacturer’s data. Specifications and installation instructions from the manufacturer for each major roofing product or system required. Include certification or other data substantiating compliance with the requirement.

B. Submit 2 copies of Certificate of Compliance for UL rating.

C. Roofing guarantee. Furnish 5-year guarantee on roofing and associated work specified in this section, agreeing to repair or replace work which leaks water, deteriorates excessively or otherwise fails to perform as roofing, due to failures of material or workmanship.

1-5 JOB CONDITIONS

A. Proceed with roofing work only after substrate has been cleaned and inspected by NPS Contracting Officer’s Representative (COR).

B. Examine the substrate and the conditions under which roofing work is to be performed, and notify the COR of unsatisfactory conditions. Do not proceed with the work until unsatisfactory conditions have been corrected.

C. Weather Conditions. Proceed with roofing work only when weather conditions are in compliance with manufacturer’s recommended limitations, and when conditions will permit the work to proceed in accordance with requirements and the manufacturer’s recommendations.

D. It is the Contractor’s responsibility to verify all measurements and quantities before starting work. It is the contractor’s responsibility to comply with specifications and assure quality of installation.

PART 2: MATERIALS

2-1 ROOFING FELT: ASTM D226-89, Type II (30 pound), unperforated, asphalt saturated felt.

Fasteners: Staples permissible.

2-2 NAILERS: Douglas Fir-Larch, Constructions of Stud grade, pressure treated.

Fasteners: Screws, 3-1/2 inch length, coated, deck screws.

2-3 SPACED SHETAHING: Douglas Fir-Larch, No. 2 Common, S4S, except where exposed at eave, which shall be rough band sawn.

Fasteners: Hot-dipped galvanized 6-penny box nails.

2-4 SHAKES: “Certi-Split” grade No. 1, taper split (CSSB) western red cedar shakes. 24 inch by length by ½ inch butt thickness. Random width. Exposure to weather shall be 6 inches.

A. Fire-retardant treatment. All shakes, ridge boards and cleats shall have fire retardant treatment for “Class C” classification as prepared roof covering materials. Treatment shall consist if impregnation of the material under pressure with fire retardant chemicals and heat cured. Conform to Underwriters’ Laboratories Standard 790.

B. Nails: Hot-dipped zinc coated roofing nails.

2-5 HIP AND RIDGE FLASHING: Zinc sheet, 0.16 inch thickness, 18 inch width, or minimum 12 inch width, 5 foot lengths, minimum.

Fasteners: Zinc coated roofing nails.

2-6 HIP AND RIDGE BOARDS: Red cedar, clear heart, 5/4 x 6 inches and 5/4 x 8 inches, rough band sawn. Use of shingles or shakes is not acceptable.

Fasteners: Hot-dipped galvanized nails, length as required.

2-7 INSECT SCREEN: Commercial bronze wire cloth, 18 by 18 per inch mesh.

Fasteners: Staples, coated corrosion resistant.

3-1 ROOFING FELT: Replace in-kind, if necessary. Install two layers at eaves. Lap according to manufacturer’s recommendations. Replace in-kind, if necessary.

3-2 NAILERS: Replace in-kind, if necessary. Install true to line, accurately position screws to secure to blocking members, one screw per bearing. End gap nailers 2 inches to 2-1/2 inches, between sheathing boards, with gap centered between blocking members.

3-3 SPACED SHEATHING: Replace in-kind, if necessary. No unsupported ends. Two nails per bearing.

3-4 LAYING SHAKES: Space shakes ½ inch apart. Lay shake butts in straight lines, with exposure of 6 inches. Stagger joints between adjacent courses not less than 2 inches.

A. First course: Along eaves line, nail the first course of shakes, made up of two layers with broken joints. Project first course 2 inches over edge of roof.

B. Second Course: When installing second or subsequent courses, be sure that spaced sheathing boards are in the proper position for nailing.

C. Nailing: Use two nails per shake, located approximately 1 inch from edge on each side, and 1 to 2 inches above the butt line of the course to follow. Nails shall be long enough to fully penetrate spaced sheathing boards. Adjust length selected to accommodate thickness of material being nailed; i.e., use longer nails on starter courses, hips and ridges. Drive nails flush but not into shake surface.

3-5 HIP AND RIDGES:

A. Trim shake ends projecting above hip or ridge line to conform to true line of hip or ridge.

B. Install flashing strip centered over hip or ridge on top of shakes. Install in lengths not greater than 10 feet, overlapping lengths 6 inches. Install with hot dipped galvanized nails.

Do not nail through overlaps.

C. Replace hip and ridge boards as previously installed, in long lengths, with staggered joints, joint to leeward side of ridge from direction of prevailing wind.

3-6 INSECT SCREEN: Replace in-kind, if necessary. Fold 3-1/2 to 4 inch width into channel shape, 4 feet 6 inches long, secure nailer ends with staples; lap ends 3 inches at nailers.

SECTION 073100

ASPHALT SHINGLES

1-1 DESCRIPTION: The work of this section consists of all shingle roofing work at the

Administration Building and Park Residence.

1-2 QUALITY ASSURANCE:

A. Conform to applicable codes for ASTM D3018 Class A for shingle type specified.

B. Perform Work in accordance with NRCA Steep Roofing Manual.

1-3 SUBMITTALS: In accordance with Section 01300, submit:

Inspection Report: Submit report of roof inspection verifying shingles are sealed. Indicate extent of areas that did not properly self-seal and what corrective measures were required.

1-5 JOB CONDITIONS

A. Proceed with roofing work only after substrate has been cleaned and inspected by NPS Contracting Officer’s Representative (COR).

B. Examine the substrate and the conditions under which roofing work is to be performed, and notify the COR of unsatisfactory conditions. Do not proceed with the work until unsatisfactory conditions have been corrected.

C. Weather Conditions. Proceed with roofing work only when weather conditions are in compliance with manufacturer’s recommended limitations, and when conditions will permit the work to proceed in accordance with requirements and the manufacturer’s recommendations.

D. It is the Contractor’s responsibility to verify all measurements and quantities before starting work. It is the contractor’s responsibility to comply with specifications and assure quality of installation.

2-1 ROOFING FELT: ASTM D226-89, Type II (30 pound), unperforated, asphalt saturated felt.

Provided by NPS.

2-2 SHINGLES: Malarkey Highlander. Provided by NPS.

2-3 RIDGE FLASHING: Zinc sheet, 0.16 inch thickness, 18 inch width, or minimum 12 inch width, 5 foot lengths, minimum. Provided by NPS.

2-4 FASTENERS: Pneumatic nails permissible. Provided by contractor.

3-1 INSTALLATION

A. Protective Underlayment: Replace in-kind, if necessary.

a. Place one ply of underlayment over area not protected by eave protection, with ends and edges weather lapped minimum of 6 inches. Stagger end laps of each consecutive layer.

Nail in place.

b. Place second ply of underlayment over first layer with ends and edges weather lapped 6 inches minimum. Stagger end laps of each consecutive layer. Nail in place.

c. In stall protective underlayment perpendicular to slope of roof and weather lap minimum of 6 inches over eave protection.

d. Weather lap and seal watertight with plastic cement items projecting through or mounted on roof.

B. Metal Flashing and Accessories: Replace in-kind, if necessary.

a. Weather lap joints minimum 4 inches and seal weather tight with plastic cement.

b. Secure in place with nails. Conceal fasteners.

c. Flash and seal work weather tight, projecting through or mounted roofing with plastic cement.

C. Asphalt Shingles:

a. Place shingles in coursing pattern to replicate existing shingles with weather exposure to match existing shingles and produce double thickness over full roof area. Install started course at eaves.

b. Project first course of shingles ¾ inch beyond fascia boards.

c. Extend shingles ½ inch beyond face of gable edge fascia boards.

d. After installation, place tow daubs of plastic cement, one inch diameter under each shingle tab exposed to weather, to prevent lifting.

e. Install roof vents in accordance with manufacturer’s instructions.

f. Coordinate installation of roof mounted components or items project through the roof covering with weather tight placement of counter flashing.

g. Complete installation to provide weather tight surface.

SECTION 07311

WOOD BOARD ROOF

1-1 DESCRIPTION: The work of this section consists of all wood board roofing work at the Kitchen, and Blacksmith Shop at Fort Vancouver National Historic Site. All of these roofs are simple gable construction, but the Kitchen roof has a single gable dormer over a breezeway and a shed roof over a covered porch. The Kitchen roof is 1,800 square feet and the Blacksmith Shop roof is 1,475 square feet. Note: this section is a line option for the installation only for each of these roofs. The roofing material will be provided by the NPS.

1-2 JOB CONDITIONS:

A. Proceed with roofing work only after substrate and waterproof membrane have been inspected by the NPS. Notify NPS of any unsatisfactory conditions. Do not proceed with roofing work until unsatisfactory conditions have been corrected.

B. Weather conditions. Proceed with roof work only when weather conditions are favorable for roofing work.

2-1 BOARD ON BOARD ROOFING:

A. Board on board roofing materials will be provided by the NPS. See Attachment 2 for description and detail of wood board roofing.

B. Fasteners: “Tremont” nails as manufactured by Tremont Nail Company, Wareham, Mass.

Hot-dipped galvanized. Square cut common siding type. Provided by NPS.

2-2 RIDGE AND VALLEY FLASHING:

A. Terne coated stainless steel, 28 gauge, 304 nickel chrome stainless steel covered on both sides with alloy 80 percent lead, 20 percent tin. 18 inch width, or minimum 12 inch width, 5 foot lengths, minimum. Provided by NPS.

B. Fasteners: Zinc coated roofing nails. Mostly provided by NPS.

2-3 HIP AND RIDGE BOARDS:

A. Same as wood board roof material. Provided by NPS.

B. Fasteners: “Tremont” nails as manufactured by Tremont Nail Company, Wareham, Mass.

Hot-dipped galvanized. Square cut common siding type. Provided by NPS.

3-1 INSTALLATION OF BOARD ROOFING:

A. Install board on board, to match existing installation.

B. Precaution should be taken to avoid nailing between board sheathing. Extra precaution should be taken to avoid splitting the wood boards vertically.

C. Nailing schedule:

Use Spacing Type (Square Cut) Board on Board Roofing 16 inch on center Common siding