About GAF BarrierGuard® Surface Coating

GAF BarrierGuard® Surface Coating, when mixed with water, Portland cement, and fully reinforced with HydroStop® PremiumCoat® Fabric, forms a hard-wearing, flexible compound with excellent resistance to standing water.

Features & benefits

Product Documentation

Resources for every professional

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Contractors

We’re building new plants for greater capacity, and better systems for faster response and greater visibility.
Contractor Resources
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Architects & Design Pros

We’re building better, faster, more accurate access to the information you need.
Design Resources
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Property managers & owners

Whether you manage one property or many, we’re building the products and programs you need to reroof, restore, or maintain your investment.
Building Resources
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Roofing suppliers

Find tools, documents, and training designed by GAF to help you serve your customers.
Dealer Resources