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).
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.
|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)|
|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|
* 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.
All documents are U.S. English unless otherwise noted