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Guideline Specification
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SECTION 07.55.56
(Fluid Applied Roofing)
Acrylabs R45
10-Year Warranty System
Reinforced Elastomeric Composite Membrane System
PART 1 – GENERAL
1.01 SUMMARY
A. Description: This section includes a fluid applied 45 mil reinforced elastomeric composite roof membrane system.
B. Section Includes: Reinforced elastomeric composite membrane system, complete with surface preparation, with all flashing and other related work required to perform a complete installation of the Acrylabs system.
1.02 REFERENCES
A. American Society for Testing and Materials (ASTM) 1998 Annual Book of ASTM Standards
- Designation : D6083-97a Standard Specification for Liquid Applied Acrylic Coating Used in Roofing
- Volume 04.04 Roofing, Waterproofing, and Bituminous Materials
- Volume 06.01 Paint - Tests for Chemical, Physical, and Optical Properties; Appearance
B. National Roofing Contractors Association (NRCA)
- Roofing and Waterproofing Manual (4th Edition)
C. Factory Mutual Approval Standard 4470
- Standard for Class 1 Windstorm Pressure, Uplift, Hail Damage, Resistance to Foot Traffic, Susceptibility to Leakage.
- Standard for Class A Spread of Flame Fire.
1.03 SYSTEM DESCRIPTION
A. Performance Requirements:
- Provide fluid applied reinforced elastomeric composite membrane system in
accordance with manufacturer's performance criteria without defects, damage,
failure, or infiltration of water.
- Coatings to be used in the membrane system shall meet or exceed all minimum testing requirements listed in ASTM D6083 Standard Specification for Liquid Applied Acrylic Coatings Used in Roofing.
1.04 SUBMITTALS
A. Product Data: Provide written technical information and installation
instructions from Acrylabs which demonstrate that materials to be
installed comply with contract documents.
B. Submit shop drawings indicating details showing treatment of transitions,
edges, closures, penetrations, etc.
C. Verify field measurements and submit materials list, including quantities, to
be applied to achieve specified membrane thickness.
D. Submit 2-year contractor warranty against leaks and/or defects in
workmanship. Upon notification of any such defects, within the first 2 years,
the contractor will make the necessary repairs. Warranty shall be signed by an
authorized representative of the contractor.
E. Submit written verification that the existing roof drain lines are reasonably
free of obstruction prior to application of Acrylabs product.
F. Submit Acrylabs Material Safety Data Sheets (MSDS).
1.05 QUALITY ASSURANCE
A. Applicator Qualifications: Applicator who has proven experience in the installation of work similar to that required for this project for a period of 5 years or more.
- Certificate: When requested, submit certificate indicating applicator
qualifications.
- Completed project reference list: When requested, submit a list of three (3) projects of similar nature using products of the type specified herein. List shall include the following: Project name and location, size, cost, contact person and phone number.
B. All details must be installed in conformance with the current Acrylabs specifications and detail drawings.
C. Final inspection by an authorized representative of Acrylabs may be
required for warranty. Final inspection shall not replace the normal
responsibilities of the contracting parties. Request for final inspections must
be forwarded, along with a roof plan, to Acrylabs upon substantial
completion of the project. Any deviations from Acrylabs specifications
must be noted on the roof plan drawing.
D. Provide all primers, coatings, reinforcement fabrics and accessories as
manufactured and/or approved in writing by Acrylabs.
1.06 DELIVERY, STORAGE AND HANDLING
A. Furnish Acrylabs coating system materials and component accessories in manufacturer's original containers and/or wrapped bundles, clearly indicating the Acrylabs label and other identifying information.
B. Store materials separated from the ground and in a dry location, protected
until installation in accordance with Acrylabs instructions.
C. Handle materials in accordance with Acrylabs recommendations.
D. Protect materials against freezing. Store materials between 50ºF and 85ºF.
1.07 PROJECT CONDITIONS
A. Acceptable Substrates: Acceptable substrates for the 2001-R45 System shall be one of the following: Single Ply Membranes, Smooth Surfaced Built-up roofing, APP Modified Bituminous Roofing, SBS Modified Bituminous Roofing, Granular Surface Roll Roofing or other substrates approved in writing by Acrylabs
B. Substrate: After existing roofing systems are cleaned and repaired, as required, but prior to starting membrane system installation work, complete all substrate corrective actions required, including but not limited to, removal and replacement of deteriorated flashing, roof decking, removal and replacement of wet insulation. Substrate shall be smooth, dry, and free of debris.
1.08 ENVIRONMENTAL CONDITIONS
A. It is the responsibility of the applicator to determine if present and forecast weather conditions are acceptable for application of Acrylabs coatings. To qualify for warranty, a log book of project weather conditions during application is to be kept by project foreman.
B. Do not apply Acrylabs coatings when snow, rain, or fog is expected before the membrane will have a chance to cure.
C. Do not apply coatings when the temperature of surfaces to be coated and/or surrounding air temperatures are less than 45°F or freezing temperatures are expected within 24 hours.
D. Do not apply Acrylabs coatings when the dew point can be reached before the coatings have sufficiently dried or cured. Special consideration must be given during spring and autumn applications for rapid temperature changes near sunset, shortened workdays may be required.
E. Allow wet surfaces to dry thoroughly and to attain temperature and conditions specified before proceeding with or continuing coating operation.
F. Wind conditions must be considered during application of products to avoid damage to adjacent surfaces or completed work. Provide for protection of other surfaces or do not spray apply coatings if overspray will be deposited on surfaces not intended to be coated.
1.09 SAFETY REQUIREMENTS
A. Users should familiarize themselves with appropriate Material Safety Data
Sheets (MSDS). MSDS must be available at all worksites where materials are being
used.
B. Materials shall be applied in accordance with all applicable local, state,
and federal regulations.
C. A respirator should be used when spraying Acrylabs coatings to protect
applicators from overspray particles.
D. When applying reflective white coatings to a roof, sunglasses should be used
to protect eyes from glare.
E. Handle on pails should only be used to hand carry pail and should not be used
to hoist pail from ground to roof.
F. All work shall be performed in conformance with the safety procedures
outlined in the current FALL PROTECTION GUIDE as published by the Occupational
Safety and Health Administration (OSHA). Information regarding OSHA Standards
are available on the internet at www.osha.gov.
G. Care should be taken to avoid overhead power lines and arcing potential.
1.10 WORK SEQUENCE
A. Sequence of operations is at the applicator's option providing it is arranged
to maintain the building dry during the life of the Contract. Schedule and
execute work to prevent leaking.
B. The building shall be occupied. Do not disrupt activities in occupied spaces.
1.11 WARRANTY
A. Furnish specified Acrylabs warranty. All invoices must be satisfied.
B. Furnish contractor 2-year warranty. The conditions of the contractor warranty
may vary, however the occurrence of leaks caused by defects in workmanship will
be remedied at no cost to the building owner according to provisions of the
contractor warranty.
PART 2 – PRODUCTS
2.01 FLUID APPLIED REINFORCED COMPOSITE MEMBRANE SYSTEM
A. Manufacturer: Acrylabs |
||
101 North Prospect St |
||
| Reading, PA | ||
1. |
Contact | |
| Address | 101 North Prospect St | |
| Reading, PA 19606 | ||
| Phone | (866) 273-1355 | |
Fax |
(610) 273-1357 | |
| Website | www.acrylabs.com | |
| B. Substitutions: None | ||
2.02 MATERIALS
A. The Acrylabs 2001-R45 System shall include but not be limited to:
1. |
Elastomeric Basecoat |
Acrylabs |
2100B |
2, |
Elastomeric Finish Coat |
Acrylabs |
2100 |
3. |
Polyester Reinforcing Fabric |
Mesh 2000 Series |
|
B. Acrylabs Minimum Material Properties
- Elastomeric Coatings – Elastomeric coatings shall be water-dispersed 100% acrylic elastomeric coatings designed for use in reinforced composite membrane systems. Materials shall meet the following minimum specifications:
Liquid Coating Property Requirements 2100B
Minimum |
ASTM |
|
Weight Per Gallon |
12.0 lbs. |
D-1475 |
Solids by Weight |
67% |
D-1644-A |
Solids by Volume |
53% |
D-2697 |
Viscosity |
125 - 140 KU |
D-562-A |
Liquid Coating Property Requirements 2100
Solids by Weight Cured Film Physical Property Requirements 2100B
245% h Fungi Resistance Zero rating Cured Film Physical Property Requirements 2100
245% h Fungi Resistance Zero rating
2. Reinforcement Fabric – Stitchbonded polyester for use in cold fluid applied roof membranes that shall provide high strength and good elongation.
Mesh 2000 Fabric (Average typical properties)
2.03 APPLICATION EQUIPMENT
A. Acrylabs coatings shall be applied by brush, roller, or spray. When applied by spray it is recommended that an airless spray rig with a 3000PSI +/- be used with tip sizes .019 through .036 orifice size. Application by roller or brush may require additional coats, but material requirements will remain the same. In all cases, the specified minimum membrane thickness must be achieved.
2.04 RELATED MATERIALS
A. Related Products Supplied By Acrylabs:
- 2400 Flashing Grade Elastomeric
- 3200 Rust Inhibitive Primer
- 2500 Patching Compound
- 3300 Concrete and Masonry Sealer
- Butyl Tape & Butyl Button Caps
B. Roof Drain Flashing:
- Specify as per requirements of project.
C. Sealant (Silicone sealant unacceptable)
- Polyurethane
- Polysulfide
- Acrylic
PART 3 - EXECUTION
3.01 MANUFACTURERS INSTRUCTIONS
A.A. Compliance: Comply with Acrylabs product data, recommendations, and installation instructions for substrate verification, preparation requirements, and installation.
3.02 EXAMINATION
A. Examine the substrates, flashing conditions, penetrations, equipment supports, curbs, adjoining construction and the conditions under which the work is to be installed. Do not proceed with the work until unsatisfactory conditions have been corrected and substrate is acceptable.
B. Applicator shall be responsible for providing a proper substrate to receive
the Acrylabs roofing system.
C. Verify that substrate is dry and free of oil, grease, dust, rust, or other
contaminant.
D. Defects in substrate shall be noted and work shall not proceed until such
defects have been corrected.
3.03 PREPARATION
A. Do not proceed with installation until projections through the Acrylabs membrane such as piping, drains, conduit, vents and ducts have been installed. Holes shall be patched or filled and finished flush in accordance with Acrylabs directions. Cut off high spots and grind smooth as applicable.
B. Substrate: After existing roofing systems are cleaned and repaired, as required, but prior to starting new roofing system installation work, complete all substrate corrective actions required. Substrate shall be smooth, dry, and free of debris.
C. The roof must be completely free of dust, dirt, oil, debris, or other contaminants before application of Acrylabs coatings or sealants. If any contaminants are found, they must be removed by appropriate means.
D. Protect area or surfaces not designated to receive Acrylabs coatings against any damage or defacement resulting from the Acrylabs System Application
3.04 INSTALLATION
A. Following inspection and acceptance of substrate condition, install the
Acrylabs R45 Roof System using minimum coverage indicated in the
manufacturer's guidelines. Adherence to guidelines will yield a minimum membrane
thickness of 45 mils over entire surface covered.
B. Apply reinforcement fabric and basecoat to field of roof:
- Apply tack coat of 2100B at approximately 1.25 gallons per 100 sq. ft. Immediately embed MESH 2000 Polyester Reinforcement into wet coating. Care must be taken to lay the fabric to the contact surface avoiding wrinkles, fishmouths, etc.
- Roller or brush shall be used to insure that Mesh 2000 is fully embedded.
- After embedding MESH 2000 into wet coating apply an additional coat of 2100B,
at a minimum rate of 1.52 gallon per 100 sq. ft. completely saturating Mesh 2000
fabric.
- Achieve a total of 25 mil base membrane thickness.
C. Apply flashings at roof penetrations and detail work:
- 1. All flashings must be completed in accordance with published Acrylabs
details before final application of 2100 Finish Coatings.
- 2. Apply heavy coat of 2100B to the area to be flashed, and embed Mesh 2000
Reinforcement Fabric into wet coating.
- 3. Brush shall be used to insure that Mesh 2000 is fully embedded.
- 4. Apply additional coating to the top of fabric taking care to completely saturate fabric and provide a weatherproof seal.
D. Repair all fishmouths, bridging, or other defects in the previously applied Mesh 2000 Reinforcement Fabric by cutting excess fabric, if required, and making necessary repairs using Mesh 2000 and 2100B.
E. Apply intermediate coat: Apply first coat of 2100 to entire surface
previously covered with Mesh 2000 reinforcement fabric including field of roof,
gussets, penetrations, and perimeter locations. A minimum of 1.25 gallon of 2100
per 100 sq. ft. is required.
F. Apply finish coat in color specified: Apply finish coat of 2100 to entire
surface previously coated. A minimum of 1 gallon of 2100 per 100 sq. ft. is
required.
G. If necessary apply additional 2100, where required, to ensure that the
minimum 45 mils total membrane thickness is achieved.
3.05 FIELD QUALITY REQUIREMENTS
A. Verify final film thickness as specified. If specified dry film thickness has
not been achieved, application of additional coating will be required.
B. Visually inspect critical areas of the roof including roof seams and
penetrations and touch up with additional Acrylabs coatings to ensure
complete and adequate coverage.
3.06 FINAL CLEANING
A. Except as otherwise provided for remove temporary protection devices and
facilities which were installed during the course of the work.
B. Clean project site, sweep paved areas, rake clean other surfaces of roofing
debris.
C. Remove debris, surplus materials and trash from project site.
D. All soiled surfaces shall be cleaned using approved materials and methods.
3.07 PROTECTION OF COMPLETED MEMBRANE
A. Protect completed membrane from damage by work of other trades. Schedule sequence of work so that traffic over new membrane is minimized. Institute required procedures for protection of completed membrane during installation of work from other trades throughout remainder of construction period. Do not allow traffic of any type on unprotected membrane.
B. At completion of construction activities of other trades, touch-up and
restore damaged or defaced coated surfaces. Correct damage by cleaning,
repairing, replacing, and/or recoating to make acceptable to the specifier
and/or Acrylabs Inc. Leave in an undamaged condition.
END OF SECTION
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