Click here to view this document in .pdf Format
SECTION 07.55.56
(Fluid Applied Roofing)
Acrylabs PR20
10-Year Warranty System
Partially Reinforced Elastomeric System for Metal Roofs
PART 1 – GENERAL
1.01 SUMMARY
A. Summary Includes: This summary includes a fluid applied partially reinforced elastomeric composite membrane system. It is designed for weatherproofing and protection of existing metal roofs.
B. Section Includes: Partially reinforced Elastomeric membrane system, complete with surface preparation with all flashing and other related work required to perform a complete installation of the Acrylabs system. This system will yield a min 20 mil membrane throughout the field of the roof, and a min. of 45 mil membrane at the reinforced areas.
1.02 REFERENCES
A. American Society for Testing and Materials (ASTM) 1998 Annual Book of ASTM Standards
B. National Roofing Contractors Association (NRCA)
C. Factory Mutual Approval Standard 4470
D. Sheet Metal and Air Conditioning National Contractors Association (SMACNA)
E. Society for Protective Coatings (SSPC)
1.03 SYSTEM DESCRIPTION
A. Performance Requirements:
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. Provide corrugation factor. Provide number and length of seams to be reinforced.
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 products.
F. Submit Acrylabs' standard Material Safety Data Sheets (MSDS) documents.
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.
B. All details must be installed in conformance with the current Acrylabs specifications and detail drawing. For conditions not addressed by Acrylabs the reference guide for application and detailing shall be:
C. Final inspection by an authorized representative of Acrylabs is
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,base coats, fabric 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 PR20 System shall be one of the following: metal panel roofs, standing and soldered seam roofs and most single ply roof systems.
B. Substrate: After the existing roof systems are cleaned and repaired, as required, but Prior to starting new coating system installation work, complete all substrate corrective installation actions required. 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.
B. Do not apply Acrylabs coatings when snow, rain, fog or freezing temperatures are possible within 24 hours after application.
C. Do not apply coatings when the temperature of surfaces to be coated and/or surrounding air temperatures are less than 45º F.
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. Translucent light panels should be clearly marked and safely protected from foot traffic.
G. 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).
H. Care should be taken to avoid overhead powerlines and arcing potential.
1.10 WORK SEQUENCE
A. Sequence of operations is at the Contractor'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.
B. All invoices must be paid in full and satisfied.
C. 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 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
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
Minimum ASTM Weight Per Gallon 12.0 lbs. D-1475Solids by Weight Solids by Weight 67% D-1644-A Solids by Volume 53% D-2697 Viscosity 125 - 140 KU D-562-ACured Film Physical Property Requirements 2100B
Minimum ASTM Standard Low Temperature Flexibility passes D522-93A @ -49º F Percent Elongation (break) 196% D-2370 @73.4º F245% h Tensile Strength (psi) 236 psi D-2370 @73.4º F Permeability (20 mil film) <21.9 perms D-1653-B @73.4º F Water Swelling 9.2 D-471 @73.4º F Accelerated weathering 2 years-no effect G-53Fungi Resistance Zero rating Cured Film Physical Property Requirements 2100
Minimum ASTM Standard Low Temperature Flexibility passes D522-93A @ -49º F Percent Elongation (break) 196% D-2370 @73.4º F245% h Tensile Strength (psi) 236 psi D-2370 @73.4º F Permeability (20 mil film) <21.9 perms D-1653-B @73.4º F Water Swelling 9.2 D-471 @73.4º F Accelerated weathering 2 years-no effect G-53Fungi Resistance Zero rating Cured Film shall also pass Rain Permeability testing according to ETP-1375, Mil-Std-810E, Method 506.3, Proc.III
2. Reinforcement Fabric – Stitch-bonded polyester for use in cold fluid applied roof membranes that shall provide high strength and good elongation.
Mesh 2000 Fabric (Average typical properties)
Results ASTM Standard Tensile strength WARP=74lb / WEFT=45lb D-5034 Elongation WARP=21lb / WEFT=51lb D-5034 Ball Burst 111 lbs D-3787 Mullen Burst 176.8 lbs D-3786 Tear Strength WARP=14lb / WEFT=24lb D-1117
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. Metal Roof Panels:
B. Metal Flashing:
C. Closures
D. Translucent Light Panel
E. Mechanical Fasteners
F. Sealant (Silicone sealants unacceptable)
Polysulfide
Acrylic
G. Polyurethane Foam
PART 3 - EXECUTION
3.01 MANUFACTURERS INSTRUCTIONS
A. Compliance: Comply with Acrylabs product data, recommendations, and installation instructions for substrate verification, preparation requirements, and installation.
3.02 EXAMINATION OF SURFACE
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.
B. Applicator shall be responsible for providing a proper substrate to receive
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, open panel ends and voids under "non venting" ridge caps shall be patched or filled and finished flush in accordance with Acrylabs instructions.
B. Substrate: Prior to starting new coating system installation work, complete all substrate corrective installation actions required. Substrate shall be smooth, dry, and free of debris.
C. Rust or loose coatings, if present, must be removed by the most appropriate method. Sand blasting, power washing, or power wire brushing may be used.
a. SSPC-SPC1 | Solvent Cleaning |
b. SSPC-SPC2 | Hand Tool Cleaning |
c. SSPC-SPC3 | Power Tool Cleaning |
d. SSPC-SP6/NACE3 | Commercial Blast Cleaning |
e. SSPC-SP7/NACE4 | Brush Off Cleaning |
f. SSPC-SP11 | Power Tool Cleaning To Bare Metal |
D. Areas where rust has been removed must be primed with 3200 Rust Inhibitive Primer. Acrylabs 3200 rust Inhibitive Primer can be used to prime entire roof areas or used as a spot primer.
Consult Acrylabs for more information on treatment of rusted metal.
E. 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.
F. Replace loose, rusted, and corroded fasteners using appropriate fastener for the project.
G. Apply Acrylabs 2400 brush grade mastic or Butyl Button Caps at fastener heads. Small cracks, roof penetration transitions and other locations where high build material is required or desirable for a watertight seal should be addressed using Acrylabs 2400 brush grade, Acrylabs Butyl tape or Acrylabs Mesh and 2100B.
H. Complete all work above roof as required by other trades.
3.04 INSTALLATION
A. Following inspection and acceptance of substrate condition, install the Acrylabs
PR20 Roof Coating System using minimum coverages indicated in the manufacturer's guidelines. Adherence to guidelines will yield a minimum membrane thickness of 20 mils dry film thickness (dft.) on the field of roof and a minimum of 45 mils dft. on the reinforced areas.
B. Apply flashings at roof penetrations and detail work:
C. Seams: All seams requiring treatment shall be treated with 2100B and MESH 2000 Reinforcement Fabric of appropriate width to create a reinforced elastomeric membrane. Subsequent top coats will be applied to these treated areas to provide a minimum membrane thickness of 45 mils (dft).
D. Apply intermediate coat of Acrylabs 2100 coatings to entire prepared roof surface to produce a membrane of 10mils minimum dry film thickness on the field of the roof.
E. Apply a final top coat of Acrylabs 2100 coatings to areas previously coated to produce a total minimum dry film thickness (including the previously applied Acrylabs 2100) of 20 mils. Acrylabs 2100 top coats are always applied in 2 coats to ensure minimum dry film thickness as well as proper coverage.
Note: When possible each application of coatings should be applied at right angles to the previous coat in a cross-hatch pattern. Applicator shall guarantee proper membrane thickness according to specification.
3.05 FIELD QUALITY REQUIREMENTS
A. Verify final minimum 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 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 job site, sweep paved areas, and rake clean other surfaces of roofing
debris.
C. Remove waste, surplus materials and rubbish.
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 requires procedures for protection of completed membrane during installation of work from other trades throughout remainder of the 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.
END OF SECTION
Renewable - Sustainable - Seamless - Environmentally Responsible
Exceptional Durability - Flexible - UV Resistant - ASTM Tested
Reduces Energy Costs - Outstanding Performance - Unmatched Service