Elastomeric Roofing - PVDF Coating

TOPCOAT® PVDF Coating



Description

TOPCOAT® PVDF Coating is a water-based, spray-applied, Polyvinylidene fluoride-based reflective coating with exceptional dirt-repelling characteristics.

This product was designed to repel dirt build-up and staining from environmental factors that can diminish reflectance over time. Polyvinylidene fluoride is a well-established polymer additive that has been used in coating products for decades in both non-roofing and roofing applications. It offers excellent weatherability and resists mildew and can withstand extended exposure to a wide range of temperatures, ultraviolet rays, and atmospheric pollutants.

TOPCOAT® PVDF Coating is compatible with select water-based sealant and coating products, including TOPCOAT® Membrane and TOPCOAT® MB Plus coating products. It may be installed as a final coat in multicoat applications of compatible water-based product or in a multicoat PVDF coating application. See GAFs published TOPCOAT® application instructions for specifications and requirements.

TOPCOAT® PVDF coating is highly sensitive to substrate conditions, and all flashing materials and/or base coats MUST BE THOROUGHLY CURED/DRY, prior to the application of PVDF coating. Application to uncured or wet substrates will result in cracking.

While TOPCOAT® PVDF coating has demonstrated greater resistance to standing water than typical water-based coating, it is not warranted in applications where ponding water is present. TOPCOAT® PVDF Coating is available in white but custom tinting is available (minimum order requirement).


Uses

TOPCOAT® PVDF Coating is designed for use over galvanized metal roofing, BUR, TPO (TOPCOAT® TPO Red Primer required), and modified bitumen membranes (TOPCOAT® MB Plus base coats required over asphaltic surfaces to deter staining), and select TOPCOAT® water-based coatings. Substrate shall not experience consistent repeated standing and/or ponding water and must have positive drainage. Apply at temperatures above 42°F (5.56°C) and below 120°F (48.89°C). Keep material from freezing.


Advantages
  • High reflectivity helps to reduce rooftop surface temperatures

  • TOPCOAT® PVDF polymer deters adhesion of dirt and dust particles that impact aged reflectivity

  • Compatible with other TOPCOAT® water-based coating products (see specifications for details)

  • Water based, less impact on the environment, easy to clean up

  • Extreme weatherablity/longevity

  • Mildew resistant

  • Shorter cure time than typical water-based coatings

  • Warranties available for up to 10 years*

  • Guarantees for up to 20 years*

  • Available in 5-gallon pails and 55-gallon drums, minimum order applies


TOPCOAT PVDF COATING TECHNICAL DATA
Application Rate: 1.0 to 1.5 gallons per coat
Application Method: Airless sprayer, brush, or roller
Application Temp (air, surface); 42° - 120 °F
Drying Time (75°, 50%, RH): Approx 24 hours per coat (install over DRY substrates ONLY)
Enlongation: ASTM D2370 100%
Solids Content (by weight): 57% calculation via formulation
Viscosity (75°F): Brookfield (#6 spindle @ 10 rpm) 11,000 ~ 13,000 cps
Tensile Strength: ASTM D2370 > 200 psi
Unit Sizes: 5-gallon pail and 55-gallon drum
Weight Per 5-Gallon Pail, As Applicable: 63 lbs
Wet Adhesion on TOPCOAT®: ASTM C794 2 lbf/in
Water Absorption: ASTM D471 <5%
Water Vapor Permeance: ASTM D96 49 perms
Tear Resistance: ASTM D624 ~70-80 lbf/in
Coverage Rate: Airless spray 120 sq ft/gal
VOCs: <50 g/L
Initial Reflectivity**: 0.885

* See TOPCOAT® 10-Year Limited Warranty and the TOPCOAT® Diamond Pledge™ NDL Roof Guarantee for complete coverage and restrictions.

** Based on in-house testing

For application questions, please contact GAF Technical Services at 1-800-766-3411.

Note: Repair leaks promptly to avoid adverse effects, including mold growth.

Documents

All documents are U.S. English unless otherwise noted

Commercial Roofing EagleView Commercial Property Owners Portal Architects And Specifiers Green Roof Central




   





 
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