GAF Premium Acrylic HydroStop® Top Coat (Formerly HydroStop Finish Coat)
- Provides advanced water proofing and protection against extreme weather events such as hail, high winds and rain.
- For use on metal, structural concrete, PVC, ISO, TPO, smooth & granulated asphaltic, hypalon, EPDM, and gypsum roofs.
- Use to create a seamless and self flashing reinforced membrane.
- Nothing to tear off, reducing environmental waste and associated cost.
- Decrease energy cost with excellent UV resistance.
- Flexes to conform to roof movement.

$268.94
Why Premium Acrylic HydroStop® Top Coat?
The Premium Acrylic HydroStop® Top Coat is the top layer of the HydroStop PremiumCoat System. Used in conjunction with the HydroStop Foundation Coat and the HydroStop Fabric.
Related Products we sell for Premium Acrylic system applications.
- GAF Cleaning Concentrate.
- GAF Multi Purpose Primer for over Asphaltic and Concrete
- GAF Metal Roof Primer.
- GAF SureBond Primer for chalky surfaces including previously coated Acrylic.
- GAF Premium Brush-Flashing Grade and Polyester fabric for seams and details.
- GAF Premium Acrylic Base Coat and Polyester Fabric for 3-course work.
- EPDM Activator for Seam Seal SB over EPDM.
- TPO Red Primer for over TPO
HydroStop Premium Coat System is a roofing and water-proofing solution for coating, recovery, reroof and new roof applications. It provides a fully-adhered, breathable acrylic membrane for a variety of existing roof substrates.
- Roof substrates: Metal (historic or commercial) roofs, flat and low-pitched roofs, BUR, structural concrete, EPDM, Hypalon, modified bitumen, PVC, and TPO roofs, as well as parapet walls and exterior walls
- Water-based acrylic base coat.
- Seamless and self-flashing
Why HydroStop PremiumCoat System?
- Decrease energy costs with available highly reflective top coat.
- Provides advanced water proofing and protection against extreme weather events such as hail, high winds and rain.
- Can be installed over a variety of roofs without the need for a complete tear-off eliminating associated cost and waste.
- No heavy equipment and minimal tools required.
*DO NOT use on gravel-surfaced roofs or shingle roofs.
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