Mod Bit Roofs

As recommended by Progressive Materials

A. Scope of Work
1.01 Description
Provide all materials, labor and equipment required for the installation of the RCR System over the existing modified bitumen or smooth surface buit-up roof including all ancillary products.
B. Related Work
1. Perform Moisture Survey
2. Replace Wet Insulation
3. Repair All Sheet Metal Defects 4. Repair All Flashing Defects
5. Surface Preparation
6. Perform Adhesion Tests
7. Install Silicone RCR Membrane 8. Install Walkway Systems
A. Conform to applicable code for fire resistance ratings of roof system.
1.02 Performance Requirements
Recommended Design Specification
SILICONE ROOF COATING RESTORATION (RCR) SYSTEM OVER MODIFIED BITUMEN OR SMOOTH SURFACE BUR
Part 1. General Conditions
B. Underwriters Laboratories, Inc. - UL 790: Class A Fire Hazard Classification.
C. Factory Mutual (FM) – FM Standard 4470 approval
D. All silicone products must be domestically produced. Products produced outside of the US will not be accepted.
E. Coating manufacturer must produce its own product. Private labeled silicone coating products will not be accepted.
A. Product Data: Product data on silicone coating, physical and chemical properties, preparation of substrate required, product limitations, and cautionary requirements.
1.03 Submittals
B. Safety Data Sheets (SDS)
C. Shop Drawings: Roof plan and details showing extent of roofing, intersections with adjacent surfaces, and details of expansion joints, counterflashing, and other items for a complete roofing system.
D. Manufacturer's Installation Instructions: Indicate installation requirements and procedures. E. Certificates:
1. Product certificates signed by the manufacturer certifying material is in compliance with the specified performance characteristics and criteria, and physical requirements.
F. Sample copy of PM warranty
RCR ROOFING SYSTEM 07545-1
G. Maintenance Data: For RCR System to include in maintenance manuals.
1.04 Quality Assurance
B. Installer:
1. Installer must be a Certified Licensed Applicator (CLA) by the Manufacturer providing the warranty, and is capable of receiving the specified warranty.
2. CLA to ensure all personnel are properly trained and have a full understanding of all OSHA safety requirements.
C. Manufacturer Field Representative: Provide a qualified representative of the Manufacturer providing the warranty to monitor and periodically inspect the installation.
A. Deliver and store liquid materials and other products in their original unopened containers or packaging until ready for installation.
Recommended Design Specification
H. Final Inspection Report: Copy of roofing system manufacturer’s inspection report of completed roofing installation.
A. Manufacturer:
1. Company specializing in the manufacturing of the system specified in this Section. 2. A minimum of 10,000,000 square feet of a similar system installed.
1.05 Delivery, Storage, and Handling
B. Materials shall be clearly labeled with the manufacturer’s name, product identification, safety information, and lot numbers.
C. Store materials indoors whenever possible.
D. Protect stored products from freezing.
E. Comply with the manufacturer’s instructions for handling and safety procedures.
F. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
A. Maintain logs of environmental conditions (temperature, humidity, and wind speed) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside of manufacturer’s limits.
1.06 Environmental Requirements
B. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit roofing system to be installed according to manufacturer’s written instructions and warranty requirements.
C. Do not install silicone coating under the following conditions: 1. When ambient temperature is below 35° F.
2. At temperatures less than 5° F above dew point.
A. Provide Manufacturer’s (5, 10, 15 or 20 year) labor & material warranty covering leaks due to silicone material failure.
1.07 Warranty
RCR ROOFING SYSTEM OVER MODIFIED BITUMEN OR BUR 07545-2
A. Insulation Board
1. Match existing material
2.01 Acceptable Products
B. Butyl Fleece Tape
1. Progressive Materials: FT 500 Butyl Fleece Tape
C. Cleaners and Primers
1. Progressive Materials: P-100 General Purpose Primer
D. Silicone Caulk Sealant
1. Progressive Materials: SS 300 Series Silicone Sealant
E. Flashing Grade Sealant
1. Progressive Materials: FG 400 Silicone Flashing Grade Sealant
Recommended Design Specification
Part 2. Products
F. Reinforcing Fabric
1. Progressive Materials: PF 200 Polyester Fabric
a. PF206–6”
b. PF 212 – 12” G. Moisture Relief Vents
1. Progressive Materials: MRV 600 One-Way Roof Vent H. Walkway System
1. Progressive Materials: Pro-Grip Walkway System a. PG 700 Pro-Grip Yellow Walkway Coating
b. PG 750 Pro-Grip Yellow Walkway Granules
I. Skylight Sealer
1. Progressive Materials: HS 3220 Clear Silicone Skylight Coating
J. Silicone Coating
1. Progressive Materials: Pro-EcoSil HS 3200 Series
A. Silicone base and top coat to be Pro-EcoSil HS 3200 Series Silicone Coating by Progressive Materials, LLC and complying with the following minimum properties:
2.02 Silicone Coating Materials
1. Tensile Strength: ASTM D412, 247.
2. Elongation: ASTM D412, 237 percent minimum at break at 75° F. 3. Water Vapor Permeance: ASTM D-96, 10.7 at 20 mils.
4. Fire resistance: ASTM E108, UL 790 Class A.
5. Color: Owner to select standard topcoat color.
6. Solids Content: 92% ±3%
7. VOC Content: < 50 grams/liter
8. Initial Solar Reflectivity: .89
9. Initial Thermal Emissivity: .90
10. SRI Value: 113
RCR ROOFING SYSTEM OVER MODIFIED BITUMEN OR BUR
07545-3
Part 3. Execution 3.01 Examination
B. Perform infra-red thermal scan of roof to identify any wet insulation.
C. Identify all seam failures, flashings failures and inadequate sheet metal details. D. Inspect all roof drains to ensure proper performance.
E. Inspect all roof system fasteners for back out.
A. Membrane Cleaning:
3.02 Preparation
1. Thoroughly powerwash roof surface and all other areas to receive new coating with a minimum of 2,000 psi water pressure. Be sure not to damage existing membrane during this process.
2. After the surface has dried, perform an adhesion test. If the coating does not properly adhere to the surface, apply P-100 General Purpose Primer at a rate of 1 gallon per 100 square feet.
3. Any areas of grease contamination are to be cleaned with an industrial strength detergent. B. Existing Wet Insulation Areas:
1. Roof areas containing moisture below the roof surface shall either be replaced, or for areas less than 500 sq. ft. with moderate moisture content, a moisture relief vent shall be installed.
Recommended Design Specification
A. Verify roof slope prior to beginning installation. There is to be no single area of standing water on the roof 24 hours after a rain, greater than 100 sq. ft. and more than 1⁄2” deep.
a. Wet Insulation Replacement (wet area is greater than 500 sq. ft.)
1) Remove roof system and wet insulation
2) Replace insulation with identical insulation materials. Fasten new insulation at a rate of 1 fastener per 2 square feet.
3) Roof system is to be replaced with like materials and overlapped a minimum of 12” on to the existing roof system.
4) At the leading edges of roof patches, apply a 3 course coating and fabric utilizing the PF 200 Polyester Fabric and HS 3200 Silicone Coating.
a) Apply 12 to 15 mils of silicone coating over surface to receive fabric.
b) Embed fabric into silicone coating while still wet. Smooth out fabric and ensure there are no wrinkles or fishmouths
c) After the base coating has cured, apply a generous coat of HS 3200 silicone coating over the fabric to ensure complete saturation.
b. Moisture Relief Vent Installation (wet area is less than 500 sq. ft.)
1) Locate center of moisture containing insulation.
2) Cut a 4” diameter opening through the membrane and insulation material; remove material to vapor barrier or deck.
3) Lay the MRV 600 Roof Vent on top of roof system and attach vent to the roof deck with the appropriate fastener. Install 4 fasteners per vent, evenly spaced.
RCR ROOFING SYSTEM OVER MODIFIED BITUMEN OR BUR 07545-4
D. Lap Seam Treatment:
4) Clean area of vent that is to receive flashing material with clean rag and solvent to remove oil film from vent.
(1) Apply 12 to 15 mils of silicone coating over surface to receive fabric.
Recommended Design Specification
5) Flash in vent:
a) Apply a 3 course coating and fabric utilizing the PF 200 Polyester Fabric and HS 3200 Silicone Coating.
(2) Embed fabric into silicone coating while still wet. Fabric should extend at least 2” on to the flange of the vent and at least 4” on to the roof surface.
(3) After the base coating has cured, apply a generous coat of silicone coating
over the fabric to ensure complete saturation.
C. Flashings Details: Ensure all existing flashings provide a watertight condition. If necessary, re-flash any areas required utilizing a 3 course coating fabric detail as outlined above.
1. Identify and repair all lap seam failures utilizing a 3 course coating fabric detail as outlined above.
2. To ensure complete encapsulation of the lap seams at the completion of the project, install 20 mils (app. 2” wide) of HS 3200 Silicone Coating over all lap seams prior to coating the field of the roof. Coverage rate to be approximately 400 lf. per gallon.
E. Sheet Metal: Ensure all sheet metal is in good condition and will provide a watertight condition. If necessary, replace or repair any sheet metal required.
A. Ensure surface is completely dry.
3.03 Silicone Coating Installation
B. Ensure subsequent coats of primer or silicone coating is completely cured.
C. Ensure adhesion tests have been completed and results are satisfactory with the manufacturer’s requirements.
D. Install silicone coating in one or two passes over entire roof surface to achieve a final thickness of: 1. 25 mils minimum for a 5 year warranty
2. 30 mils minimum for a 10 year warranty
3. 35 mils minimum for a 15 year warranty
4. 40 mils minimum for a 20 year warranty
E. While spraying the silicone coating, special effort should be made to have pass lines overlap on membrane seams as to provide additional coating thickness on the seams.
F. It is strongly recommended that the coating should be applied with a roller at all edges and penetrations to prevent overspray and provide a clean straight edge.
G. NOTES
1. Any subsequent membrane repairs after the coating installation should be done only with silicone products. Repairs should be completed with a three course coating and fabric if needed.
2. Over some asphalt based or EPDM based products, a slight bleed-through or “yellowing” may occur through the silicone coating. This is only a cosmetic issue and will not affect the performance of the system
RCR ROOFING SYSTEM OVER MODIFIED BITUMEN OR BUR 07545-5
A. Install the Pro-Grip Walkway System at heavy traffic areas and at high impact areas as directed by the owner.
3.04 Walkway System
1. Walkway Areas
a. Walkways should be a minimum of 30” wide.
b. Mask off area to receive walkway system to ensure clean straight edges. c. Install PG 700 Pro-Grip Yellow Walkway Coating at a thickness of 25 mils.
d. Immediately after the application of the PG 700, broadcast PG 750 Pro-Grip Walkway Granules into the coating at a rate of 40 lbs. per 100 square feet. The granules will settle into the coating. Apply the granules generously, inspect the surface within a few minutes and reapply as needed to obtain a continuous film of granules.
2. High Impact Areas (around mechanical equipment, etc)
a. Mask off area to receive walkway system to ensure clean straight edges. Area should be 30” wide around all identified equipment.
b. Install PG 700 Pro-Grip Yellow Walkway Coating at a thickness of 40 mils.
c. Immediately after the application of the PG 700, broadcast PG 750 Pro-Grip Walkway Granules into the coating at a rate of 60 lbs. per 100 square feet. The granules will settle into the coating. Apply the granules generously, inspect the surface within a few minutes and reapply as needed to obtain a continuous film of granules.
B. After the coating has completely cured, remove all loose granules with a small hand blower and a soft bristle broom.
Recommended Design Specification
A. Final Roof Inspection: Arrange for roofing system manufacturer’s technical personnel to inspect roofing installation upon completion and submit report to Owner/Architect. There shall be no items on the roof that could inhibit the inspection process, such as, solar panels, decking systems, etc.
3.05 Field Quality Control
1. Notify Owner 48 hours in advance of date and time of inspection.
a. Repair or remove and replace components of roofing system where inspection results
indicate that they do not comply with specified requirements.
A. Remove overspray from adjacent surfaces using cleaning agents and procedures recommended by manufacturer of affected construction.
3.06 Cleaning
B. In areas where finished surfaces are soiled by work of this section, consult manufacturer of surfaces for cleaning advice and conform to their instructions.
C. Repair or replace defaced or disfigured finishes caused by work of this section.
A. Ensure roof surface is free of traffic for minimum of 12 hours after silicone coating application or until coating is completely cured.
3.07 Protection of Finished Work
B. Ensure any subsequent work does not cause damage to finished roof system. If necessary, install protection over finished roof area.
END OF SECTION