Building Material

We offer a complete product range of FIRM-FILL Gypsum Concrete

FIRM-FILL Gypsum Concrete

Thickness 3/4" (19mm) (minimum over wood) to 3 1/2" (89mm)
Technical Data Properties
Weight 7 lbs/ft2 at 3/4" (19 mm)

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.

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