PART 1 GENERAL
1.1 SUMMARY
A. Provide labor, materials, equipment and supervision necessary to install a seamless, fully adhered fluid-applied roof coating system for use over smooth and granulated cap sheet, modified bitumen and built-up roof substrates. Note: Gravel surfaced built-up roofs must receive an application of spray polyurethane foam prior to coating.
B. The manufacturer's application instructions for each product used are considered part of this specification and should be followed at all times.
C. Related Sections:
1. Section 03 30 00 - Cast-In-Place Concrete
2. Section 07 50 00 - Membrane Roofing
3. Section 07 60 00 - Flashing and Sheet Metal
4. Section 07 72 00 - Roof Accessories
5. Section 07 92 00 - Joint Sealants
1.2 SYSTEM DESCRIPTION
A. ELASTA-GARDTM BUR/MB Aliphatic shall be a complete system of compatible materials to create a seamless waterproof fluid-applied roof coating system.
B. ELASTA-GARDTM BUR/MB Aliphatic shall be designated for application on the specific type of substrate as indicated on the drawings and specifications.
1.3 SUBMITTALS
A. Technical Data: Submit HonestJoy product technical literature and installation instructions.
B. Samples: Submit samples of specified fluid-applied roof coating system. Samples shall be construed as examples of finished color and texture of the system only.
C. Applicator Approval: Submit letter from HonestJoy stating applicator is approved to install the specified fluid-applied roof coating system.
D. Warranty: Submit a copy of the HonestJoy warranty to meet project specifications.
1.4 QUALITY ASSURANCE
A. Supplier Qualifications: ELASTA-GARDTM BUR/MB Aliphatic, as supplied by HonestJoy?, is approved for use on this project.
B. Applicator Qualifications: The Applicator shall be approved by HonestJoy to install the ELASTA-GARDTM BUR/MB Aliphatic fluid-applied roof coating system. Manufacturer's written verification of applicator approval is required.
C. Regulatory Requirements:
1. The fluid-applied roof coating system shall be rated Class A in accordance with the spread of flame test requirements of ASTM E108.
2. Materials used in the fluid-applied roof coating system shall meet Federal, State and local VOC regulations.
D. Adhesion Test: An adhesion test is recommended to ensure sufficient adhesion will exist between the substrate and fluid-applied roof coatings.
1.5 DELIVERY, STORAGE AND HANDLING
A. Containers and Packaging: Materials shall be delivered in original, tightly sealed containers, clearly labeled with the manufacturer's name, brand name, type of material and batch number(s).
B. Storage and Handling: It is recommended to store materials at 75°F (23.8°C). Handle products to prevent damage to container. All materials shall be stored in compliance with local fire and safety requirements. Do not store at high temperature or in direct sunlight.
1.6 PROJECT CONDITIONS
A. Prior to starting work, read and follow the Material Safety Data Sheet (MSDS) and container labels for detailed health and safety information.
B. Do not proceed with application of fluid-applied roof coating materials when substrate temperature is less than 40°F, if precipitation is imminent or to a damp or frosty surface. Temperature should be above 40°F and more than 5°F above dew point and rising. Special precautions may need to be taken when ambient and/or substrate temperatures are approaching, at, or above 110°F and it may be necessary to limit material application to evening hours.
C. Coordinate fluid-applied roof coating work with other trades to ensure coatings are protected from traffic and other abuse until completely cured and installation is complete.
2.1 MANUFACTURER
A. HonestJoy www.coating-paint.com.
2.2 MATERIALS
A. Fluid-Applied Roofing Materials:
1. Primer: HonestJoy 7780/7781 epoxy primer.
2. Liquid Flashing: 70620 series single component moisture cured polyurethane coating.
3. Reinforcing Fabric: 86220 reinforcing fabric (Tietex T-272)
4. Flashing Tape: 86218 flashing tape.
5. Sealant: 70991 or 70995 urethane sealant.
6. Leveling Coat: 70620 series single component moisture cured polyurethane.
7. Base Coat: 70620 series single component moisture cured polyurethane.
8. Intermediate Coat: 70630 series single component moisture cured polyurethane.
9. Topcoat: 7490 series single component aliphatic polyurethane.
10. Optional Granule Coat: 7490 series single component aliphatic polyurethane.
11. Cleaning Solvent: 20653 Xylene Thinner or 7055 Odorless Reducer.
B. Typical performance requirements of cured fluid-applied roof coating materials used on this project are:
PERFORMANCE REQUIREMENTS OF CURED FILM
PHYSICAL PROPERTIES
TEST METHOD
70620
70630
7490
Tensile Strength
ASTM D412
643 psi
1,022 psi
3,500 psi
Elongation
ASTM D412
620%
539%
200%
Permanent Set
ASTM D412
5%
<5%
<15%
Tear Resistance
ASTM D1004
2.205
(lbs-force)
1.35
(lbs-force)
400 pli
Water Resistance
ASTM D471
<3% @ 7
days
<3% @ 7
days
2.2%
Shore A
ASTM D2240
65 - 71
70 - 75
92
Solar Reflectance Index (White)
ASTM E1980
N/A
N/A
87
The above tested results are typical values. Individual lots may vary up to 10% from the typical value.
2.3 ACCESSORIES
A. Fabric reinforcement and waterproofing coverings for expansion joints shall be compatible with specified fluid-applied roof coating system.
B. Miscellaneous materials such as adhesives, metal primers, metal vents and drains shall be a composite part of the roof system and shall be compatible with the specified fluid-applied roof coating system.
C. Granules (Optional): Granules shall be number 11 screen size, dust free, ceramic-coated roofing granule.
PART 3 EXECUTION
3.1 EXAMINATION
A. Inspect surfaces, which will receive the ELASTA-GARDTM BUR/MB Aliphatic fluid-applied roof coating system to make sure they are clean, smooth, sound, properly prepared, and free of moisture, dirt, debris, or other contaminants.
B. Verify that all roof penetrations, mechanical equipment, cants, edge metal, and other on-roof items are in place and secure.
C. Verify that all critical areas around the immediate vicinity of the coating application area are suitably protected.
D. Verify that roof has sufficient slope for water to drain.
E. Verify all roof drains are clean and in working order.
F. Verify that all air conditioning and air intake vents are suitably protected or closed.
3.2 PREPARATION
A. All existing HVAC and other equipment shall be protected from any damage that could be caused by the fluid-applied roof coating application.
B. Raising, re-setting, and protection of air conditioning equipment, ventilators, and exhaust fans may be required.
C. Protect all adjoining areas that are not to receive the fluid-applied roof coatings and provide a suitable work station to mix the coating materials.
D. Remove all abandoned, unnecessary and non-functional equipment, deteriorated and/or water saturated roofing materials, adhesives and foreign materials down to sound substrate. Replace these areas with materials and components to match existing roof system and seal water tight. The width, adhesion and/or fastening requirements of the new materials must be compatible with the existing roof and meet local codes.
E. Repair deteriorated flashings, seams, cracks, blisters, splits, fishmouths, holes and other surface imperfections including but not limited to all vertical/horizontal interfaces, roof termination points, base of all vent pipes and other protrusions, HVAC units and other roof mounted equipment using HonestJoy 86218 flashing tape or elastomeric base coat with embedded fabric at 24 dry mils. Note: If elastomeric base coat and reinforcing fabric are used, work reinforcing fabric into wet base coat using a brush or roller to eliminate air pockets, wrinkles and gaps, applying additional base coat material as necessary to totally encapsulate the reinforcing fabric. Over the repair, apply HonestJoy epoxy primer at the rate of 1/3 gallon per 100 square feet (300 sf/gal) and allow to cure until primer will not transfer when touched. When primer has cured, apply elastomeric base coat and fabric a minimum of 4 inches beyond the edges of the repair at 24 dry mils. Work reinforcing fabric into wet base coat using a brush or roller to eliminate air pockets, wrinkles and gaps, applying additional base coat material as necessary to totally encapsulate the reinforcing fabric. Note: HonestJoy 86218 flashing tape may be used in lieu of base coat and fabric.
F. Thoroughly clean all exposed metal surfaces such as pipe sleeves, drains, boxes, ducts, etc. Remove all loose paint, rust and asphalt or loose roofing materials of any kind.
G. Seal gutters, parapet walls and caps to watertight condition. Repair any damaged metal. Caulk and seal to watertight condition all screws, seams, skylights, joints, pipes, voids, protrusions and any areas where water could enter through the roof.
H. As needed, reinforce all vertical/horizontal interfaces, roof termination points, base of all vent pipes and other protrusions, HVAC units and other roof mounted equipment with HonestJoy 86218 flashing tape or elastomeric base coat with embedded 6 wide reinforcing fabric at 24 dry mils. Note: If elastomeric base coat and reinforcing fabric are used, work reinforcing fabric into wet base coat using a brush or roller to eliminate air pockets, wrinkles and gaps, applying additional base coat material as necessary to totally encapsulate the reinforcing fabric.
I. All roof surfaces, whether old or new, shall be cleaned using HonestJoy 8500 BioDegradable Cleaner at the rate of 1 part concentrate to 10 parts water. Apply the diluted cleaning solution under low pressure spray at a rate of 150 to 200 square feet per gallon and allow to stand for 15 minutes. Do not allow the solution to dry. Thoroughly rinse with fresh water under high pressure to remove the cleaning solution. The use of stiff-bristle brooms or mechanical scrubbers may be required to remove heavy deposits of dirt or other contaminants from surface. Allow roof surface to thoroughly dry. Note: If algae is present on the surface, the cleaning must include bleach in the washing of the substrate. Follow local ordinances regarding runoff from this procedure.
J. Before proceeding with coating application, ensure that substrate and repairs are clean, sound, dry (cured) and secure.
3.3 APPLICATION
A. Factors That Affect Dry Film Thickness: Volume of solids, thinning, surface profile, application technique and equipment, overspray, squeegee, brush and roller wet out, container residue, spills and other waste are among the many factors that affect the amount of wet coating required to yield proper dry film thickness. To ensure that specified dry film thickness is achieved, use a wet mil gauge to verify actual thickness of wet coating applied, adjusting as needed for those factors which directly affect the dry film build.
B. Primer: Apply HonestJoy 7780/7781 epoxy primer at a rate of 1/3 gallon per 100 square feet (300 sf/gal) and allow to cure until primer will not transfer when touched. Do not apply epoxy primer over base coat material used for detailing. If base coat cannot be applied over primer within 24 hours, reprime.
C. Leveling Coat: Thoroughly mix and apply 70620 series single component moisture cured polyurethane coating at approximately 100 sf/gal (1.0 gal/100 sf or 16 wet mils) to yield 12 dry mils and allow to cure.
D. Apply seam detail coat. All capsheet seams on the roof must be sealed with elastomeric base coat material and a minimum of 6 wide reinforcing fabric at 24 dry mils thick. Work reinforcing fabric into wet coating material using a brush or roller to eliminate air pockets, wrinkles and gaps, applying additional base coat material as necessary to totally encapsulate the reinforcing fabric. Note: Honestjoy 86218 flashing tape may be used in lieu of base coat material and fabric.
E. Base Coat: Thoroughly mix and apply 70620 series single component moisture cured polyurethane coating at approximately 100 sf/gal (1.0 gal/100 sf or 16 wet mils) to yield 12 dry mils and allow to cure.
F. Intermediate Coat: Thoroughly mix and apply 70630 series single component moisture cured polyurethane coating at approximately 100 sf/gal (1.0 gal/100 sf or 16 wet mils) to yield 12 dry mils and allow to cure.
G. Topcoat: Thoroughly mix and apply 7490 series single component aliphatic polyurethane coating at approximately 100 sf/gal (1.0 gal/100 sf or 16 wet mils) to yield 12 dry mils and allow to cure.
H. Optional Granule Coat: Thoroughly mix and apply 7490 series single component polyurethane coating at approximately 100 sf/gal (1.0 gal/100 sf or 16 wet mils) and immediately broadcast #11 roofing granules at the rate of 30 lbs to 40 lbs /100 sf. After cure, remove loose granules from roof surface.
I. Coating Thickness Requirements: Total coating system thickness shall average 48 dry mils (DFT), exclusive of Optional Granule Coat and granules. Minimum dry film thickness (DFT) at any point on the roof shall not be less than 32 dry mils of which 16 dry mils must be above the base coat material and 8 dry mils must be 7490 series material. Caution: Rough surface profiles may increase the number of coats required to achieve uniform film coverage and minimum dry film thickness requirements.
3.4 FIELD QUALITY CONTROL
A. Manufacturer's Field Services: Inspection by an independent 3rd party or coating manufacturer's representative may be required to verify the proper installation of the fluid-applied roof coating system. Any areas that do not meet the minimum standards for application as specified herein shall be corrected at the applicator's expense. Manufacturer's inspection or verification shall not constitute acceptance of responsibility for any improper surface preparation or application of material. It is the responsibility of the applicator to make sure there is sufficient coating applied to the roof.
3.5 CLEANING
A. Surfaces not intended to receive the ELASTA-GARDTM BUR/MB Aliphatic fluid-applied coating system shall be protected during the application of the system. Should this protection not be effective, or not be provided, the respective surfaces shall be restored to their proper conditions by cleaning, repairing or replacing. All debris from completion of work shall be completely removed from the project site.
3.6 PROTECTION
A. After completion of application, do not allow traffic on coated surfaces for a period of at least 48 hours at 75°F and 50% R.H., or until completely cured.
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