FIRM-FILL® Gypsum Concrete
The original FIRM-FILL® Gypsum Concrete floor underlayment is designed for use in multi-family housing to satisfy acoustical ratings and fire codes.
With excellent STC and IIC ratings as well as over 100 UL listings, FIRM-FILL® Gypsum Concrete floor underlayment is an excellent choice for jobs needing compressive strengths up to 2000 psi.
![CAD Drawings BIM Models Hacker Industries, Inc. FIRM-FILL® Gypsum Concrete](/AzureResizer/cadcompanycontent/CompanyContent/Company/1278/ProductImages/9362/9362-default.jpg)
![CAD Drawings BIM Models Hacker Industries, Inc. FIRM-FILL® Gypsum Concrete](/AzureResizer/cadcompanycontent/CompanyContent/Company/1278/ProductImages/9362/firm-fill gypsum concrete.jpg)
![CAD Drawings BIM Models Hacker Industries, Inc. FIRM-FILL® Gypsum Concrete](/AzureResizer/cadcompanycontent/CompanyContent/Company/1278/ProductImages/9362/9362-default.jpg)
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FIRM-FILL® Gypsum Concrete
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Hacker Precast System