Change your country/region

It looks like you entered an employee email address, but this is the customer sign-in. Use the link below instead.

Securock® Brand Gypsum-Concrete Patch

Exceptional strength, excellent fire performance, and the versatility for concrete patch and repair jobs on many decks, such as gypsum roof decks.



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

Main Features

Securock™ concerte patching compound 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 for concrete floor patch repair on many different types of roof decks like 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"

Documents & Files

Data Sheets & Specifications

Data/Submittal Sheet (English) PDF 508.5 KB

SDS, Certifications & Reports

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

Ask a question

Our customer support team will get back to you as soon as possible.

Question Guidlines

  • Questions should relate to this product specifically.
  • For help with pricing, availability, or delivery, please call 800.874.4968 (Monday–Friday, 7am–6pm Central)
  • All questions and answers follow USG’s Terms & Conditions.
  • Your question and USG’s answer may be posted to this page in the future, but none of your personal info will be included.

 Thanks for your message. We’ll be in touch!

q & a

  • Be the first to ask a question

    Let us do the research. We’ll get back to you as quickly as we can.

    Ask USG
  • Need help right away?

    Call our technical support team at 800.USG.4YOU (874.4968)