Specifications

Specifications: Part 1 - General

1.01 Related Documents

Weather Barrier Detail Drawings, site specific drawings and General Provisions including Supplementary and Special Conditions applying to the work addressed in this section.

1.02 Description of Work

Extent of Weather Barrier Roofing System work is indicated on the drawings and is further defined by provisions of this section that includes roofing, flashing and reinforcing of joints and junctions, and roof accessories integrally related to roof installation. Areas to be re-roofed include positive slope existing roofs as indicated on drawings. Final determination of the fitness of the Weather Barrier System, or its components, for any given roof may be made by a member of Weather Barrier Technical Department or company authorized personnel.

1.03 Quality Assurance

1. Manufacturer Qualifications: Provide primary products, including Weather Barrier Roofing Membrane, Weather Barrier Flashing Grade, etc., by a single manufacturer (Weather Barrier), which has produced this type of product successfully for not less than ten (10) years. Provide secondary products only as approved by Weather Barrier for use with the specified Weather Barrier Roofing System.  
    
2. Applicator Qualifications: A single qualified applicator shall perform all work addressed in this section, and shall be qualified by Weather Barrier for application of the Weather Barrier Roofing System.

1.04 Pre-Application Roofing Inspection

Prior to scheduled commencement of Weather Barrier Roofing System and associated work, conduct a meeting at the project site with Applicator, Owner, Weather Barrier representative and any other persons directly concerned with the performance of the work. The main purpose of this meeting is to review recommended methods and procedures related to roofing work, including but not necessarily limited to the following:

1. Tour representative areas of roofing substrates to inspect and discuss conditions of substrate, penetrations and other preparatory work to be performed.
2. Review Weather Barrier Roofing System requirements, Weather Barrier Detail Drawings, specifications and other documents, if applicable.
3. Review required inspection(s), testing and material usage accounting procedures.

1.05 Submittals

As required, submit Weather Barrier’s technical product data, installation instructions and recommendations for each type of required roofing product. Include data substantiating that materials comply with requirements.

1.06 Job Conditions

1. Roof Work: Proceed with roofing work only when existing and forecasted weather conditions will permit work to be performed in accordance with Weather Barrier recommendations and warranty requirements as follows:
   1. Do not begin work if rain is expected within twenty-four hours of application, or if temperatures are expected to fall below 50°F or 10°C during the duration of the job. (NOTE: 60° F LIQUID EPDM)
   2. High end temperature restriction (both air and substrate) for application of Weather Barrier products is 120°F. If substrate temperatures exceed 120°F, recommend that Weather Barrier products be applied during cooler periods of the day. If this is not practical, the substrate can be cooled with water, and then Weather Barrier products applied just after the water has flashed-off. No moisture can be present when applying Weather Barrier products. Weather Barrier products applied to substrates at elevated temperatures (above 120°F) may experience blistering. (NOTE: Darker colored substrates have higher surface temperatures)
   3. Take into consideration curing properties of Weather Barrier Roofing Systems; allow for sufficient daylight hours necessary for sufficient curing of materials.
   4. Other weather and environmental conditions to consider are mist, dew, condensation and relative humidity. These factors can affect Weather Barrier drying times and, under extreme conditions, can result in product inconsistencies or possible wash-off.
   
    
2. Questionable Substrates: If any questions arise regarding the compatibility of Weather Barrier products with an existing substrate, Installer shall prepare test patches to check adhesion. Always contact Weather Barrier’s Technical Department concerning questionable substrates, required additional information and recommended test patch materials.

1.07 Product Handling

Store and handle Weather Barrier materials in a manner that shall ensure there is no possibility of contamination. Store in a dry, well ventilated, weather-tight place at temperatures between 50°F and 80°F until product is ready to be applied (keep from freezing). Do not stack material pallets more than two high. Do not subject existing roof to unnecessary loading of stockpiled materials. Please note that all Weather Barrier water-based products are packaged in plastic containers, with the exception of one-gallon containers.

1.08 Warranties

Provide Weather Barrier System Warranty per the requirement of the Building owner and/or Project Architect. In order to achieve any Weather Barrier System Warranty, the following conditions apply:

1. Determination and appropriateness of the Weather Barrier Roofing System for any given roof must be obtained from Weather Barrier’s Technical Department prior to offering any warranted Weather Barrier System. Weather Barrier will refuse to offer a warranty on any Weather Barrier System being installed over an unfit, unsound or inappropriate substrate.
2. Installer must be a qualified Weather Barrier Applicator. System Warranty work cannot be subcontracted to a non-qualified applicator.
3. Weather Barrier Roofing System must be applied to full area of the roof. A system warranty will not be issued for Weather Barrier System installations over a section of any roof unless otherwise approved by Weather Barrier.
4. Applicator shall provide Weather Barrier at least two (2) weeks notice for scheduling of both interim and final inspections.
5. Gutters and roof areas which pond water for more than 48 hours are not included under Weather Barrier System Warranties.
6. Completed Warranty Registration must be returned to Weather Barrier with appropriate Applicator and Owner signatures no later than 30 days after issuance by Weather Barrier.

1.09 Treatment of Seams, Flashing, Fasteners

1. Encapsulate all fasteners with Weather Barrier 1750 Mastic (approximately 800 fasteners per gallon).
2. Flash all horizontal seams with Weather Barrier 1750 Mastic, then embed 4" or 6" Weather Barrier 201 polyester fabric, and cover the mesh with Weather Barrier 1750 Mastic (approximately 75 linear feet per gallon).
3. Flash all vertical seams with Weather Barrier 1750 Mastic (approximately 180 linear feet per gallon).
   
   Alternate to section C: to improve performance, flash all vertical seams with Weather Barrier 1750 Mastic, then embed 3' Weather Barrier 201 polyester fabric, and cover the mesh with Weather Barrier 1750 Mastic (approximately 125 linear feet per gallon).
4. Flash all curbs, vent pipes, pinholes on metal panels and skylights with Weather Barrier 1750 Mastic, then embed Weather Barrier 201 polyester fabric and cover the mesh with Weather Barrier 1750 Mastic (approximately 75 linear feet per gallon).
   
   Alternate: Coat the fiberglass skylights, if they are not utilized, with Weather Barrier 2000, 1650 or 1655 Coating (use a different color to distinguish the roof from the skylight for safety reasons).
5. Coat all areas that pond water with a Weather Barrier Liquid EPDM / Weather Barrier WB201 / Weather Barrier Liquid EPDM system(approximately 50 square feet per gallon).

Specifications: Part 2 - Systems

Preparation of Substrates for Weather Barrier Roofing Systems

2.01 Flat Roof (Ponded Water)

Surface Preparation: Roof surface should be dry, and free of dirt, mildew or any other contamination that may inhibit proper adhesion. Applicator shall make every effort to mechanically eliminate all ponding water areas on the roof prior to application of Weather Barrier products (“ponding water” is defined as water that does not properly drain and remains for more than 48 hours). Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1850 Primer Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply one coat of Liquid EPDM at 50 square feet per gallon.
• Optionally, apply a second coat of Weather Barrier Liquid EPDM at a rate of 50 square feet per gallon (note: first coat of Liquid EPDM must be solvent washed with Xylene or similar solvent to promote intercoat adhesion)

2.02 Positive Slope Roofs

2.02a Metal Corrugated

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose, flaking or powdery rust by wire brushing if it has not been removed during pressure washing. All cleaned rust areas must be treated with Weather Barrier 5003 Rust Inhibiting Primer to prevent further deterioration of the metal. All rust must be completely covered by the Weather Barrier 5003. After spot treatment of the cleaned rusted areas, a full coat of Weather Barrier 5003 Rust Inhibiting Primer should be applied to the entire surface. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02b Metal Standing Seam

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose, flaking or powdery rust by wire brushing if it has not been removed during pressure washing. All cleaned rust areas must be treated with Weather Barrier 5003 Rust Inhibiting Primer to prevent further deterioration of the metal. All rust must be completely covered by the Weather Barrier 5003. After spot treatment of the cleaned rusted areas, a full coat of Weather Barrier 5003 Rust Inhibiting Primer should be applied to the entire surface. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02c Metal Aged Copper

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose, flaking or powdery rust by wire brushing if it has not been removed during pressure washing. All cleaned rust areas must be treated with Weather Barrier 5003 Rust Inhibiting Primer to prevent further deterioration of the metal. All rust must be completely covered by the Weather Barrier 5003. After spot treatment of the cleaned rusted areas, a full coat of Weather Barrier 5003 Rust Inhibiting Primer should be applied to the entire surface. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

2.02d Built Up Roof - Asphalt

*NRCA recommends coating this roof surface to prolong the life of the roof

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove loose dirt, gravel and other surface contaminants by sweeping, vacuuming or power blowing. Gravel removal is most easily done when the asphalt is cool. Scrape or scarify heavily graveled roofs. Embedded gravel reduces normal coverage rates. New asphalt surfaces must weather and become dull, usually 6 to 12 months before coating. Replace wet insulation and any loose, curled or deteriorated roofing. All blisters should be properly treated prior to application of roof coating. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02e Built Up Roof - Modified Bituminous

*NRCA recommends coating this roof surface to prolong the life of the roof

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove loose dirt, gravel and other surface contaminants by sweeping, vacuuming or power blowing. Gravel removal is most easily done when the asphalt is cool. Scrape or scarify heavily graveled roofs. Embedded gravel reduces normal coverage rates. New asphalt surfaces must weather and become dull, usually 6 to 12 months before coating. Replace wet insulation and any loose, curled or deteriorated roofing. All blisters should be properly treated prior to application of roof coating. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02f EPDM Rubber Roof

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose dirt, and other surface contaminants by sweeping, vacuuming or power blowing. Good surface preparation is critical to coating system performance. New EPDM Rubber must weather 6 to 12 months before applying Weather Barrier coatings. Blisters must be properly treated and loose or curled seams must be cut or glued down. Wash roof with Xylene or MEK to remove chalk. Allow roof to dry before coating. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply Weather Barrier Liquid EPDM at a rate of 55 - 60 linear feet per gallon to seams. Embed WB403 mesh into the Liquid EPDM while wet and smooth out the Liquid EPDM
• Apply one coat of Weather Barrier Liquid EPDM at a rate of 50 square feet per gallon.
• Optionally, apply a second coat of Weather Barrier Liquid EPDM at a rate of 50 square feet per gallon (note: first coat of Liquid EPDM must be solvent washed with Xylene or similar solvent to promote intercoat adhesion).

2.02g Built Up Roof - Aluminum

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove loose dirt, gravel and other surface contaminants by sweeping, vacuuming or power blowing. Gravel removal is most easily done when the asphalt is cool. Scrape or scarify heavily graveled roofs. Embedded gravel reduces normal coverage rates. New asphalt surfaces must weather and become dull, usually 6 to 12 months before coating. Replace wet insulation and any loose, curled or deteriorated roofing. All blisters should be properly treated prior to application of roof coating. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02h Built Up Roof - Previously Painted Surfaces

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove loose dirt, gravel and other surface contaminants by sweeping, vacuuming or power blowing. Gravel removal is most easily done when the asphalt is cool. Scrape or scarify heavily graveled roofs. Embedded gravel reduces normal coverage rates. New asphalt surfaces must weather and become dull, usually 6 to 12 months before coating. Replace wet insulation and any loose, curled or deteriorated roofing. All blisters should be properly treated prior to application of roof coating. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply two coats of 1650 Seamless Elastomeric at 100 square feet per gallon per coat.

Alternate System:

• Apply one coat of Weather Barrier 1850 Primer/Sealer at 400 square feet per gallon.
• Apply 2 coats of 1655 Elastomeric Roof Coating at 100 square feet per gallon per coat.

2.02i Sprayed in Place Polyurethane Foam (SPF)

Surface Preparation: SPF has very poor exterior weathering properties and must be coated with Weather Barrier Roof Systems within 24 hours of new foam application. The foam must be dry before applying Weather Barrier Roof Systems.

*Contact Weather Barrier Technical Department for recommendations on coating pre-existing uncoated SPF roofs.

SYSTEM (33.2 mils DFT):

• Apply two coats of Weather Barrier 2000 Rain Coat at 50 square feet per gallon per coat.

Alternate System: (31.2 mils dft):

• Apply one coat of 1530 Roof/Deck Membrane at 100 square feet per gallon.
• Apply two coats of Weather Barrier 2000 Rain Coat at 75 square feet per gallon per coat.

2.02j Wood Roofing (Also Siding Shingles & Shakes)

Surface Preparation: All surfaces to be coated with the Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose dirt, dust, oil, grease, and other surface contaminants that could effect adhesion, by sweeping, sanding, power blowing. If mildew is present, remove completely by sterilizing the surface with mildew remover and detergent. Rinse well and allow to dry before painting.

System:

• Apply 2 coats, wet on wet, of Weather Barrier CWF-UV at 150-350 square feet per gallon (depending on wood porosity & method of application, see technical data sheet).

2.02k Fiberglass

*Consult Weather Barrier Technical Service Department

2.03 Roof Gutters

2.03a Metal

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose, flaking or powdery rust by wire brushing if it has not been removed during pressure washing. All cleaned rust areas must be treated with Weather Barrier 5003 Rust Inhibiting Primer to prevent further deterioration of the metal. All rust must be completely covered by the Weather Barrier 5003. After spot treatment of the cleaned rusted areas, a full coat of Weather Barrier 5003 Rust Inhibiting Primer should be applied to the entire surface. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of Liquid EPDM at 50 square feet per gallon / per coat.
• Optionally, apply a second coat of Weather Barrier Liquid EPDM at a rate of 50 square feet per gallon (note: first coat of Liquid EPDM must be solvent washed with Xylene or similar solvent to promote intercoat adhesion).

2.03b Concrete

Surface Preparation: All surfaces to be coated with Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose dirt, gravel and other surface contaminants. Concrete surfaces must be fully cured.

System:

• Apply one coat of 1850 Primer Sealer at 400 square feet per gallon.
• Apply one coat of Liquid EPDM at 50 square feet per gallon.
• Optionally, apply a second coat of Weather Barrier Liquid EPDM at a rate of 50 square feet per gallon (note: first coat of Liquid EPDM must be solvent washed with Xylene or similar solvent to promote intercoat adhesion).

2.04 Roof / Deck Systems

2.04a Wood

Surface Preparation: All surfaces to be coated with the Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose dirt, dust, oil, grease, and other surface contaminants that could effect adhesion, by sweeping, sanding, power blowing. If mildew is present, remove completely by sterilizing the surface with mildew remover and detergent. Rinse well and allow to dry before painting. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1850 Primer Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity). Embed polyester mesh into this coat.
• Apply a second coat of 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity).

2.04b Concrete

Surface Preparation: All surfaces to be coated with the Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose dirt, dust, oil, grease, and other surface contaminants that could effect adhesion, by sweeping, sanding, power blowing. If mildew is present, remove completely by sterilizing the surface with mildew remover and detergent. Rinse well and allow to dry before painting. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1850 Primer Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity). Embed polyester mesh into this coat.
• Apply a second coat of 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity).

2.04c Previously Coated

Surface Preparation: All surfaces to be coated with the Weather Barrier Roofing Systems must be pressure washed clean, dry and sound. Remove all loose and peeling coatings, dirt, dust, oil, grease, and other surface contaminants that could effect adhesion, by sweeping, sanding, power blowing. If mildew is present, remove completely by sterilizing the surface with mildew remover and detergent. Rinse well and allow to dry before painting. Refer to section 1.09 for treatment of Seams, Fasteners and Flashing repair.

System:

• Apply one coat of 1850 Primer Sealer at 400 square feet per gallon.
• Apply one coat of 1530 Roof/Deck Membrane at 75 square feet per gallon.
• Apply 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity). Embed polyester mesh into this coat.
• Apply a second coat of 5001 Elastomeric Deck finish at 150 or 250 square feet per gallon (depending on porosity).