ATTACHMENT NUMBER 1 CACO Replace Cedar Siding and Windows Stacey May House Statement of Work Specifications and Requirements.pdf

STATEMENT OF WORK

Replace Cedar Siding and Windows at Stacey May House

CAPE COD NATIONAL SEASHORE

1129 Gross Hill Road, Wellfleet, MA

January 28, 2020

Scope

This project is to remove and replace siding, exterior doors and windows, repair damage to exterior walls of the residence, and make repairs to chimney.

The contractor shall minimize disturbance to the site to the greatest extent possible unless directed otherwise.

The Contractor shall provide all labor, materials, tools, and equipment required to complete this work.

All work performed under this contract shall be done in accordance with applicable local, State, and Federal codes, bylaws and ordinances in effect at the time of this work.

Measurements

Estimated dimensions and quantities are provided as a guide only. The contractor is responsible for verifying all measurements and dimensions. The contractor shall take all measurements for quantities of materials and note existing conditions for the installation of new work. All ancillary work, cutting and /or removal of existing work necessary for the installation of new work shall be done as required as part of this contract.

Site Examination

It is the responsibility of the Contractor to examine the work site to confirm existing conditions and required quantities prior to submitting a proposal on this project.

Base Proposal Work Elements:

Contract Line Item Number 10:

Replace Siding, Doors and Windows – Stacey May House

Contract Line Item Number 20:

Chimney Repairs – Stacey May House

Optional Proposal Work Element:

Contract Line Item Number 30:

Replace Siding and Repairs ‐ Hardman House

Scope: Base Proposal Work Element: Contract Line Item Number 10: Siding, Doors, Windows – Stacey May

House

Remove existing cedar siding and replace with white cedar shingles.

Remove gutters and extraneous structural metal components.

Replace porch floor, wood stairs and landings.

Replace any deteriorated wood sheathing encountered with like material ‐ assume 20% replacement.

Provide and install one layer of breathable house‐wrap underlayment to entire building exterior directly on bare wood sheathing substrate, per manufacturers’ requirements.

Provide and install one layer of hardware cloth to entire building exterior directly onto house wrap.

Install water barriers, flashings, drip edges and Z flashing around doors and windows and all other wall penetrations.

Remove and replace existing windows with insulated windows to match existing sizes. Include screens.

Remove and replace existing exterior doors to match existing sizes. Include storm and screen doors.

Replace two doors with siding, interior wall and finish.

Paint existing trimwork to remain.

Replace all trim boards and fascia with red cedar trim.

Scope: Base Proposal Work Element: Contract Line Item Number 20: Chimney Repairs – Stacey May House

Remove and replace sheet metal chimney flashings including, but not limited to, step, base, reglet, counter, and apron flashings.

Rake and repoint, and/or replace cracked or spalled brick masonry units at chimneys. Restore weep holes to functionality.

Replace, reset and point base, counter, and apron flashings.

Reapply chimney coating at repair areas.

Scope: Optional Proposal Work Element: Contract Line Item Number 30: Siding and Repairs ‐ Hardman

House

Remove existing cedar siding and replace with white cedar shingles.

Retain and reuse existing gutters and downspouts.

Replace any deteriorated wood sheathing encountered with like material ‐ assume 20% replacement.

Provide and install one layer of breathable house‐wrap underlayment to entire building exterior directly on bare wood sheathing substrate, per manufacturers’ requirements.

Provide and install one layer of hardware cloth to entire building exterior directly onto house wrap.

Install water barriers, flashings, drip edges and Z flashing around doors and windows and all other wall penetrations.

Repair or replace rotted structural and framing members, threshold and flooring at laundry room. Assume 8’ of sill, 4’X 6’ area of floor and structural members and threshold are affected.

Replace all trim boards and fascia with red cedar trim.

Paint existing windows and trimwork to remain.

Replace garage windows.

Utilities and Services

The Contractor shall provide and maintain sanitary facilities for workers.

Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government. Notify Contracting Officer and utility companies of proposed locations and times for excavation. If damage occurs to an unknown utility, repair utility, immediately notify the Contracting Officer.

Water Service: Water from existing water system is available for use without metering and without payment of use charges. Provide connections and extensions of services as required for construction operations without any additional permit costs.

Electric Power Service: Electric power from existing system is available for use during construction without metering and without payment of use charges. Provide connections and extensions of services as required for construction operations without any additional permit costs. Arrange with utility company and government for time when service can be interrupted, if necessary, to make connections for temporary services.

Permits and Approvals

If ground disturbance is needed, the Contractor is responsible for contacting Dig Safe (#811) or other approved utility marking entity for pre‐marking of all underground utility locations within project area prior to any ground disturbance. Prior to commencement of any on‐site work, provide Contracting Office with copies of proof of pre‐marking from utility marking entity.

Contractor shall obtain all required permits for the performance of the work specified in Contract Documents at no additional cost to the contract.

Submittals and Deliverables

Contractor shall submit fall protection and safety plan that complies with OSHA standards within 3 business days after award.

Contractor shall propose location of laydown and stockpile area for COR approval. Laydown and stockpile shall be confined to any existing paved areas only.

Product Data: provide manufacturers' literature on characteristics of materials, maintenance, parts list and warranties. Submit only pages which are pertinent. Mark each copy to identify pertinent products referenced to the specifications. Provide manufacturers’ literature, drawings, and technical data sufficient to fully define the material and to demonstrate full compliance with the contract specifications.

Manufacturer's Installation Instructions: Include special precautions from manufacturer.

Drawings: submit drawings as appropriate.

Materials: submit representative samples of all materials to be used in sizes adequate to define the purpose of the material and determine its suitability.

Manufacturer's certificate: certify that products meet or exceed specified requirements.

Perform the work of this contract.

Safety and Environmental Protection Requirement

Maintain project area in a neat, orderly and safe condition at all times. All work areas shall be made secure and safe after hours, on weekends and holidays.

All debris and removed material is the property of the contractor and is to be recycled or legally disposed of in a manner that is consistent with local and state regulations. All waste, trash and debris generated as part of this project must be secured from wind and rodent action.

Contractor shall take all necessary precautions to prevent fire during construction. Contractor shall provide and maintain suitable fire protection equipment. Protection Equipment Required: Furnish a minimum of one

UL Class 2A, 2‐1/2 gallon water type stored pressure extinguisher, and one UL Class 10, Type I, 15 pound A:B:C carbon dioxide extinguisher at each work site.

No radios or smoking (including vaping) will be allowed on the job site. Confined space entry, fall protection and hardhat use shall conform to safety rules and regulations.

The Contractor is responsible for securing the site and his work. During the execution of this contract, the

Contractor shall conform to the rules and regulations as set forth by OSHA Safety and Health Standards. The

Contractor shall provide barriers, temporary fencing, signage, etc. wherever work could cause injury to workers or visitors, and ensure that ladders, scaffolding and equipment are secured from public access during off‐hours.

The Contractor shall provide and maintain environmental protection during the life of the Contract to control pollution or to correct conditions that develop during construction.

Equipment shall not be allowed to operate outside the limits of work or to disturb existing vegetation.

Construction equipment shall be kept in good repair, without leaks of hydraulic or lubricating fluids.

Contractor must visually inspect all equipment prior to commencing work every day and at the mid‐point in the work day for leaks. If such leaks or drips do occur, they shall be cleaned up immediately. Confine equipment maintenance to one location. Control runoff in this area to prevent contamination of soils and water. No equipment repair will be allowed on the site.

It is the contractor’s responsibility to ensure that any disturbance or damage done during the course of this project to the existing utilities, landscape, building or government materials, shall be repaired or restored to its original condition by the contractor at contractor’s expense prior to completion of the job.

Work and Weather Limitations

Regular work hours are between 7AM to 4PM Monday through Friday. Unless otherwise requested and approved in advance, no work shall take place after hours, on holidays or weekends. Requests must be made

48 hours in advance.

The Contractor shall be responsible for storage of all materials and equipment; the Park must approve contractor’s use of any space on the site in advance.

Proceed with project only when existing and forecasted weather conditions will permit work to be performed according to manufacturers' recommendations and warranty requirements. Ensure temperatures are over the minimum installation temperatures recommended by material manufacturers.

Security and Safety

The Contractor shall have unescorted access to the construction site. The contractor shall coordinate with the

COR for access to all locations.

The COR or the COR’s alternate will not be required to be at the site location during all working hours.

Regulations

Occupational Safety and Health Administration (OSHA) 29 CFR 1926

National Institute for Occupational Safety and Health (NIOSH)

Massachusetts General Laws and Department of Environmental Protection regulations and statutes

Town Board of Health Regulations

Materials

The contractor shall furnish, supply, and install all necessary materials to successfully complete the project requirements. Unless explicitly indicated, new materials shall match those being replaced in quality, appearance, size, materials, functionality and shape.

House‐wrap siding underlayment for application over wall sheathing

Nonwoven spun, water‐ resistant, extremely fine fused high‐density polyethylene (HPDE) lightweight, breathable pliable fabric made to resist bulk water and air penetration, reduce mold and water damage, stop air movement through walls and allow moisture vapor to pass through. As an advisory to the contract, Dupont Tyvek meets the above‐listed criteria.

Wall sheathing

Dimensional lumber wood to match existing species, shape and dimensions.

Pressure treated exterior grade plywood, thickness to match existing.

Hardware cloth

Shall be hot‐dipped galvanized fabric with ¼” mesh, standard to the industry.

Trim

Trim board materials shall be STK grade red cedar, sizes and profiles to match existing, approximately 7/8” thickness.

Porch and stair lumber

Exterior dimensional lumber to match existing species, shape and dimensions and be pressure‐treated for ground contact.

Siding

White Cedar Number 1 grade blue label Certi‐grade (R+R), shingles 18 inches long with a 5/8‐inch butt machine–sawn premium grade, all clear wood in the exposed area from top–quality northern Maine Eastern white cedar.

Wall Exposure: match existing (roughly 5”).

Wood finishes

All new wood materials shall be untreated and unfinished.

Caulking for joints or gaps around doors, windows, or siding where water invasion may occur shall be

Benjamin Moore Elastomeric 465 01 Caulk, or an approved equivalent.

Paint primers, sealers, and undercoats shall be suitable for the substrate and compatible with the finish coat and each other. Finish coat paint shall be semi‐gloss enamel, color to be selected by COR from samples provided by contractor. Acceptable paint manufacturers include: Benjamin Moore & Co:

www.benjaminmoore.com., PPG Architectural Finishes, Inc: www.ppgaf.com., Sherwin‐Williams Company:

www.sherwin‐williams.com.

Clear finish for interior wood surfaces shall be water‐based semi‐gloss polyurethane. Acceptable manufacturers include Minwax, Watco, Varathane, Zinsser.

Fasteners

Fasteners shall be of a length sufficient to penetrate into the sheathing at least ¾”, stainless steel type 316 (not type 304) ring shank blunt tip nail with minimum 7/32" head. Likely length of fastener: 1 ½” to 1 ¾”” long.

Staples will only be allowed to install water‐resistant barrier and hardware cloth. No other use of staples will be allowed.

Self‐adhered flashing

12” wide flexible water infiltration protection membrane designed specifically for use at windows, doors and other openings in building walls and capable of accommodating settlement and shrinkage movement.

Durable, cross‐laminated, high‐density 25 mil thick cross‐laminated high‐density polyethylene sheet, backed by pressure‐sensitive rubberized asphalt adhesive, compliant with the requirements of AAMA 711 for self‐ adhered flashing materials. As an advisory to the contract, Grace Vycor Plus flashing meets the above‐listed criteria.

Sheet Metal, Flashing, Accessories

Sheet Flashing shall be ASTM A 361/A361M; 26 Gauge (0.45 mm) steel with minimum G115/Z350 galvanized coating, ASTM B 209; 0.025 (0.63mm) thick aluminum, mill finish.

Lead‐coated copper shall be 16 oz. and 20 oz. cold rolled sheet copper conforming to ASTM B‐101‐12 Type I, Class A Specifications. Lead coating shall be applied by hot dip process at 6 to 7.5 pounds per 100 square feet.

Plan copper shall conform to ASTM B‐370‐12.

Rivets shall be 3/16’’ diameter copper.

All accessories including nails, screws and clips shall be copper, brass, stainless steel or galvanized steel and completely compatible with the surrounding metal to prevent galvanic reaction.

Solder for lead coated copper shall be 60% block tin and 40% pig lead conforming to ASTM Specifications B32, Grade SN60.

Flux for copper shall conform to ASTM B32, Type IS.

Sealant required for incidental sheet metal and flashings work shall be one‐part acrylic conforming to Fed.

Spec. TT‐S‐230 or approved equal.

Sealant for exposed locations shall be one‐part polyurethane sealant conforming to ASTM C920, Type S, Grade

NS, Class 23, Uses NT, M, A, and O, such as Dymeric by Tremco, Sikaflex 1a by the Sika Corp., Vulkem 116 as manufactured by Mameco International, Inc. or approved equal.

Mastic for back‐sealing sheet metal against non‐metal substrates shall be as recommended by the shingle or underlayment manufacturer. Concealed sealant for back‐sealing metal‐to‐metal connections shall be single‐ components, butyl (polyisobutylene) rubber sealant, heavy bodied for joints with limited movement.

Water based, quick drying, asphalt primer for metal flanges and brick masonry surfaces shall conform to ASTM

D276, D562, D3278, and D3960.

Windows and Doors

New exterior doors shall be made of fiberglass reinforced plastic (FRP) using Class 1 premium resin to match appearance of existing, including windows. Doors shall be 1 ¾ inch thick and of flush construction, having no louvers, seams or cracks. Door sizes and appearance, including windows, shall match existing and doors shall have equal diagonal measurements. Door glazing shall be Low‐E minimum 1/8” tempered, two panes with sealed 3/8” to ½” airspace. Door Plates shall be 0.125 inch thick minimum, molded in one continuous piece.

The stile and rail shall be molded in one continuous piece to a U‐shaped configuration and to the exact dimensions of the door. In this manner there will be no miter joints and disparate materials used to form the one‐piece stile and rail. Core material shall be polypropylene plastic honeycomb core with a non‐woven polyester veil, 180 PSI typical compression range. All frames shall be fiberglass and manufactured using the resin transfer method creating one solid piece (no voids) with complete uniformity in color and size. The frame shall be of one‐piece construction with molded stop. Jamb/Header connection shall be mitered for tight fit.

Color to be selected by COR from samples provided by contractor. As an advisory to the contract, Therma‐Tru doors meet the above‐listed criteria.

Doors shall be furnished with complete weatherstripping system to reduce air infiltration. Top of door to be provided with EPDM rubber sealing strip. Bottom of door to have flexible U‐shaped vinyl seal in an extruded aluminum retainer. Optional jamb seal to be EPDM rubber blade type attached to track angle mounting with rigid vinyl snap‐on extrusion. Weatherstripping shall be replaceable without removal of track, angle mounting, or door hardware. Air leakage per foot of door perimeter (floor, jamb, and header) shall not exceed .81 CFM

(6.36cu. cm./min.) @ 25MPH (40.2km/hr). No air leakage shall be detected between section joints when tested in accordance with ASTM E‐283.

Storm and screen doors shall be included with each exterior door.

Doors shall have seven‐pin tumbler cylinder compatible with park’s A.M. Best lock system, with night latch.

Door passage hardware SS 2 3/8 backset with deadbolt.

Windows shall be vinyl‐clad white, maintenance‐free with stainless steel hardware and mesh screen, complete with trim, size and operational function to match existing. Existing windows and screens shall be replaced with

Low E insulated composite framed windows with screens. All windows must meet energy star ratings and be

NFRC certified. All windows must have a minimum U‐Factor of .60 or less and the Solar Heat Gain Coefficient

(SHGC) must be .30 or less. Color to be selected by COR from samples provided by contractor. As an advisory to the contract, Anderson 400 Series windows meet the above‐listed criteria for the Stacey May house, and

Anderson 400 Series windows without screens meet the above‐listed criteria for the Hardman garage.

Hardware and fasteners shall be heavy duty tamper resistant materials, stainless steel type 316. Mild steel is not acceptable.

Chimney

Wherever possible, existing bricks from the chimney shall be retained. Where new brick is required, brick shall comply with ASTM C 216, grade SW, type FBS specification, and match the existing bricks in dimension, shape, color, flash characteristics, surface texture and edge characteristics.

Mortar for chimney shall be suitable in strength for the brick being used and appropriate for the application.

Match the existing mortar as closely as possible, for color, cement content and compressive strength.

Repointing mortar shall be Type N (1 part Portland Cement, 1 part lime, and 6 parts sand), conforming to ASTM

C270 Specifications and shall match the existing in color, texture, and appearance.

Portland Cement. ASTM C‐150, Type 1, white or gray as required to achieve a match of the existing mortar color. Masonry Cement will not be permitted.

Hydrated Lime. ASTM C‐207, Type S, Hydrated Lime for Masonry Purposes. Air entrained lime will not be permitted.

Aggregate conforming to ASTM C‐144. Aggregate shall be clean, well‐graded sand, matching the color and grain size of aggregates in the original mortar.

Water shall be potable and free from deleterious amounts of acid, alkali or other materials.

Hardman Laundry Room Threshold Materials

Dimensional lumber to match existing species, shape and dimensions and be pressure‐treated for ground contact. Threshold to match existing.

Pressure treated exterior grade plywood, thickness to match existing.

Laundry Room Flooring Materials (self‐adhesive vinyl tile squares) shall be replaced in kind.

Demolition

Before beginning any demolition or deconstruction work, inspect and examine the site to determine the extent of the work. Take necessary precautions to avoid damage to existing items, including trees, to remain in place, to be reused, or to remain property of Government.

Provide waste‐collection containers in sizes adequate to handle waste from construction operations. Comply with requirements of agency(ies) with jurisdiction.

Unless otherwise indicated, disposal of removed materials shall be the Contractor's responsibility. All debris and removed material is the property of the contractor and shall be recycled or legally disposed of in a manner that is consistent with local and state regulations.

Remove existing materials, including underlayment, shingles, gutters, trim boards, hardware and extraneous attachments not indicated to remain. Soffits and porch ceilings to remain. Re‐secure any substrate nails that have backed out prior to installation of new materials. Perform removal to avoid damage to electrical items, outdoor shower, railings and other items to remain or be reinstalled.

Remove Lally columns from parking area, cut edges shall be ground smooth and flush with surface of concrete to remain.

Cut I‐beams extending from house to depth in such a manner to accommodate sheathing and shingling over.

Installation

Follow the installation procedures described in the Cedar Shake & Shingle Bureau Wall Manual unless otherwise indicated herein.

Store materials so they remain clean and dry.

Siding and porches

Remove existing shingle siding down to bare wood sheathing. Remove porch flooring.

Remove two doors and framing on front elevation as indicated on sketches. Re‐frame and sheathe openings with dimensional lumber and plywood to match existing species, shape and dimensions. Install sheetrock on interior wall, finish to industry standards to match adjacent walls.

Replace defective exterior wall sheathing and porch joists as necessary to provide a structurally sound surface.

Before installing siding, install flashings around doors and windows and all other wall penetrations to remain to prevent moisture from entering the wall spaces. Complete flashings as required during and at the conclusion of siding. Install drip edges, self‐adhering flashing and other flashing as recommended by the siding manufacturer. Install Z flashing at bottoms of walls and all wall penetrations in accordance with manufacturer’s guidance. Install flashing at wall/roof interface in accordance with best practices of the industry and manufacturer’s guidance.

Install water‐resistive barrier over sheathing with penetration and junction flashing in accordance with local building code requirements.

Install one layer of ¼” mesh galvanized hardware cloth over water‐resistive barrier.

Install shingle siding with exposure to match existing as recommended by the Cedar Shake & Shingle Bureau.

Use two fasteners per shingle ¾” in from each edge and 1” above the butt line of the overlapping shingle, use 3 fasteners on shingles wider than 6”. Leave a keyway of at least 1/8” between shingles – shingles shall not touch. Joints of successive courses must be offset by at least 1 ½”. Fasteners must penetrate underlayment at least ½”.

Any interior corners shall be created by fastening an unpainted 1 ½” square cedar board on which the wall shingles are adjusted.

The first row of siding shall be two shingles thick and cover at least one inch of the top of the foundation to prevent any possible infiltration between the bottom of the shingle wall and the foundation. The second course shall extend 1/2" below the starter course to allow water to drip at the base of the shingles by gravity.

Install steps and porch flooring.

Install fascia and trim materials with stainless steel ring shank nails intended for the purpose. Replace any deteriorated soffit material.

Windows and Doors

Install new windows and doors in accordance with manufacturer’s guidance and best practices of the industry.

Install all metal and self‐adhering flashings per manufacturer’s guidance. Install door, door hardware and frame plumb in conjunction with door and hardware manufacturer. At jambs and head, provide uniform clearance of 1/16 “ to 1/8 “. Bottom clearance shall be 3/8 “ maximum above finish flooring. Locking mechanism shall allow replacement of core with A.M. Best core to match park’s locking protocols.

Provides all necessary materials including shims, hardware, caulk and insulation for each window to be installed.

Caulking

All joints or gaps in siding around doors, windows, or siding where water invasion may occur are to be filled with Benjamin Moore Elastomeric 465 01 Caulk, or an approved equivalent.

Finishes

Treat for mold, scrape, prep and paint windows to remain, soffits and porch ceilings with one coat primer and two coats paint, color to be selected by COR from samples supplied by contractor.

All interior wood surfaces shall be finished with two coats of polyurethane, with a light sanding between coats.

Chimney Work

All masonry work should be completed prior to flashing work. Repointing and re‐building work shall be performed only when air temperatures are expected to remain above 40° Fahrenheit during the work and for a period of at least 7 days upon completion of the work. Cold weather work will not be permitted.

Mortar joints that are in sound condition may remain undisturbed. All mortar joints that are friable or cracked shall be removed in preparation for repointing.

Reopen weep holes.

Remove old counter flashings and mortar to a depth of 2½ times the thickness of the joint or ¾ “, whichever is greater. Joints requiring installation of counter flashings shall be fully cleaned out to a 2” depth to provide a reglet for flashing. Coordinate locations for counter‐flashings with flashing installation.

Remove mortar from both surfaces of the adjacent masonry units and square out at the back of the joint.

Remove all loose, friable mortar, to reach sound existing mortar.

Thoroughly rinse raked joints with water to remove fine particles.

Apply mortar in layers not exceeding 3/8 “ in depth. Apply each layer fully compacted into the joint and allow to become thumbprint hard prior to the application of the next layer. Tool final layer of mortar after it has become thumbprint hard.

Remove spalled, eroded and cracked brick and replace with new. Remove and salvage loose bricks for reinstallation. Install new or replaced bricks. Tool the joints to a profile matching the adjacent brick masonry mortar joints.

All new flashing shall replicate the character and details of the existing flashing. Furnish and install lead coated copper chimney flashings including, but not limited to, step, base, reglet and counter flashings.

Sheet metal flashings shall be as required to match the existing sheet metal systems. Refer to the publication, "Copper and Common Sense" by Revere Copper and Brass and all recommendations of the Sheet Metal and Air

Conditioning Contractors National Association concerning methods and materials to be used in the fabrication and construction of sheet metal flashings.

Form and fabricate sheets, seams, strips, cleats, edge treatments, integral flashings, and other components of copper to profiles, patterns, and drainage arrangements shown and as required for permanently leak‐proof construction.

It is the intent of this project to have as little soldering of copper as is practical in order to properly install strong, watertight metal flashings. Joints shall be interlocked and crimped where possible. Flanges which extend onto the roof surface shall always be soldered. All corners shall be soldered to provide strength and a waterproof connection.

Comply with Military Specification MIL‐S‐6872B entitled, "General Specifications for Soldering Process" when forming soldered joint. Use conduction soldering methods. Areas to be joined shall be cleaned of all oil, grease, pencil marks, paint, dirt or other foreign substances. Remove all burrs using files, grinding stones or other methods. Hold parts in place using clamps, jigs and supports or by self‐fixturing. If parts are tack‐soldered to hold them in place, the area of tack‐soldering shall be reworked into the final soldering. Parts cannot move during the soldering process.

Flux shall be applied to all surfaces that are to receive solder. Flux‐cored solder should not be used. Flux shall be fluid when heated and effective in removing and excluding oxides and other impurities from the joint. Flux should be readily displaced by the molten solder.

Areas to be joined shall be heated above the liquidus temperature of the solder. To deliver maximum heat, the solder shall be applied to the joint and not the bit of the iron. Allow solder to flow in place to provide a minimum 1" final width of solder over the joint. Joint shall not be disturbed until it has been completely cooled. After soldering completely, remove all flux and acid by washing and scrubbing with a neutralizing agent.

Separate dissimilar metals by painting each metal surface in area of contact with a bituminous coating, by applying rubberized asphalt underlayment to each metal surface, or by other permanent separation as recommended by manufacturer’s or dissimilar metals.

Exposed masonry walls (behind and below counterflashings), and sheet metal flanges (both sides) shall be primed with water based asphaltic primer, prior to roofing or flashing installation. Apply primer by brush at a rate of 200 square feet per gallon with no bare spots. Allow primer to dry thoroughly prior to installing the flashings.

Edges of all sheets of uncoated copper to be soldered shall be tinned with solder on both sides for width not less than 1 ½ “. All soldering shall be done slowly with well‐heated coppers; heat sheet thoroughly and sweat copper completely through the full width of the seam. Ample solder shall be used and seam shall show at least one full inch of evenly flowed solder. Wherever possible all soldering shall be done in flat position.

Stepped Base Flashing: Form from separate pieces of lead coated copper concealed between each shingle course and extending 6’’ minimum outward onto the roof and 4’’ minimum up the chimney.

The upper edge of each stepped flashing should extend 3”‘ above each course of shingles. The lower edge should be ½’’ above the shingles forming the next course. At chimney corners connect base flashing by a locked soldered seam.

Counterflashing: Clean out and chisel out 3/8’’ wide by 1’’ deep reglet groove. Insert counterflashing 9 ‐ 10 “ above roof decks, extend down vertical surfaces over upturned vertical leg of base flashings not less than 5 “.

Fold the exposed edges of counterflashings ½ “. At stepped counterflashings, install in short lengths a minimum of 8 “ by 10 “. Provide end laps in counterflashings not less than 6’’ in the direction of water flow and render weathertight with plastic cement. Secure the flashings in the reglets with construction adhesive and lead wedges spaced at 8 “ minimum; Tamp wedges in place tightly without spalling brick surfaces. Fill reglet joints with tooled mortar. Crimp clips to bottom of new reglet flashing.

Apron flashing: Extend over new shingles not less than 16 “ with a ½’’ hemmed edge and extend up the chimney face at least 6 “. Apron flashing shall be soldered to the base flashings vertically and horizontally.

Wrap apron flashing at corners a minimum of 4 “.

Work unique to Hardman House

Open up garage threshold area to expose deterioration. Where structural members are not salvageable, carefully excise rotten sections of sill, joists, posts and framing members. Leave keys to receive repairs, Replace rotten wood with dutchmen repairs.

Apply reinforcing gussets as needed to floor joists, replace floor cribbing if needed and fasten all with appropriate fasteners. Remove rotten framing members, key in repairs where needed, reinforce as needed.

Install subflooring and flooring to match existing. Install threshold with proper weatherproofing.

Treat for mold, scrape, prep and paint windows on house with one coat primer and two coats paint, color to be selected by COR from samples supplied by contractor.

Replace garage windows.

Workmanship

The Contractor is responsible for appropriate quality control and workmanship shall be the best of their respective kinds and in full accordance with applicable codes.

Make sure all work is flush, square, level and has proper reveals per manufacturer’s specs. If not sure ask

COR before starting. All siding products will be installed in strict accordance with the manufacturer’s specification and recommendations.

When a manufacturer or a standard uses subjective words, e.g., “should, could, may”, etc., these words shall mean “shall, will, required”, etc. When the word “recommended” is used, it shall mean “required”. If there is a conflict between general and specific provisions, the specific shall govern.

Upon Notice to Proceed, Contractor shall make steady and uninterrupted progress toward the completion of the work of this contract.

Storage of Equipment and Materials

Contractor shall be responsible for storage of all materials and equipment; the Park COR and / or Project

Inspector must approve contractor’s use of any space on the site in advance.

Upon completion of the work of this contract, the storage area shall be left broom clean by contractor.

Clean‐Up

After completion of the work, construction debris, excess material and equipment shall be removed from the site and legally disposed. Contractor to use a magnet of sufficient strength to ensure no metal is left behind.

Upon completion of the work of this contract, all work areas shall be left broom clean by contractor.

Period of Performance

Preconstruction meeting – Will be held within one week of contract award.

Notice to Proceed – Will be provided to Contractor after preconstruction meeting and upon receipt of all required documents.

Material Submittals – Due within 48 hours (or 2 business days) of issuance of the Notice to Proceed

Proposed completed work with all documentation submittals:

Contract Line Item Number 10: September 15, 2020 to October 14, 2020.

Contract Line Item Number 20: July 13, 2020 to August 12, 2020

Option: Contract Line Item Number 30: To be determined

Map of Project Location

Existing Front Elevation

Existing Left Elevation

Exiting Right Elevation

Existing Rear Elevation

Replace all operable windows and basement door

New Front Elevation

Repair/repoint chimney, repair/replace flashing

Replace all trim

Cut back steel I‐beams and install shingle siding

Remove two upper doors and trim, replace with stud wall, sheathing, siding and interior wall

Re‐caulk fixed windows to remain, scrape and paint trim

Remove Lally columns (not shown) flush with pavement

New siding

Remove gutter, replace fascia

Scrape and paint soffit and ceiling

Remove outdoor lighting as needed to install siding, reinstall after re‐siding

New Left Elevation

New Right Elevation

Replace all windows and door

New siding

Remove shower components as needed to install siding, reinstall after re‐siding

Replace all trim

Replace wood stairs and landing, reinstall handrail

Replace all windows

New siding

Replace all trim

Repair/repoint chimney, repair/replace flashing

Repair/repoint chimney, repair/replace flashing

New Rear Elevation

Re‐caulk fixed windows to remain, scrape and paint trim

Replace all trim

New siding

Replace wood stairs and porch floor

New siding

Replace both sets of doors Replace entire window assembly

Replace entire window assembly

Secure openings at stairs with hardware cloth

Scrape and paint soffit and ceiling

Repair/repoint chimney, repair/replace flashing

Remove outdoor lighting as needed to install siding, reinstall after re‐siding

Remove gutter, replace fascia