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Securock® Brand Gypsum-Concrete Patch

Key Documents & Design Files


Exceptional strength, excellent fire performance and the versatility to patch many decks such as gypsum roof decks. Formerly known as Pyrofill® Gypsum Concrete, USG Securock™ Brand Gypsum-Concrete Patch is a high-performing patch solution that delivers a professional finish on a variety of poured roof decks.

Main Features

USG Securock™ Brand Gypsum-Concrete Patch is impressively durable, with more than 500 psi of compressive strength, while its fast-setting properties enable foot traffic and fasteners within 4 hours of application.

  • Easy application to patch many different types of roof decks such as gypsum roof decks.
  • Mill-formulated and composed of specially calcined gypsum and wood chips or shavings.
  • Provides excellent fire performance — non-combustible in accordance with ASTM E136, and it's fire rated and approved for use in UL Roof Deck Systems (P676, P503, P207, P229, P505, P507)
  • Manufactured to conform to ASTM C317, "Standard Specification for Gypsum Concrete"


USG Securock™ Brand Gypsum-Concrete Patch

USG Roofing Solutions Portfolio

Documents & Files

Data Sheets & Specifications

Data/Submittal Sheet (English) PDF 508.5 KB

Catalogs & Brochures

Brochure (English) PDF 6.4 MB

SDS, Certifications & Reports

SDS (English) PDF 79.0 KB
SDS (Spanish) PDF 78.2 KB

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