FIRM-FILL® High Strength Gypsum Concrete Floor Underlayment

FIRM-FILL® High Strength floor underlayment is the economical solution to correct concrete problems. It resurfaces any cracked or damaged concrete to better than new, providing surface hardness from 2500 to over 3800 psi. From feather edge to 3-1/2 inches in thickness, FIRM-FILL® High Strength floor underlayment provides a durable, flat floor for virtually any finished floor covering.

Cracked or damaged concrete, pre-cast concrete, & cast-in-place concrete.

• Corrects cracked or damaged concrete, creating a new, flat surface
• Can be installed from feather edge to 3-1/2 inches in thickness
• FIRM-FILL® High Strength floor underlayment has compressive strengths from 2500 - 3800 psi
• Rapid installation; up to 25,000 square feet installed per day
• Quick drying; can be walked on in 90 minutes
• Expert application; installed only by trained, Licensed Applicators
• FIRM-FILL® High Strength floor underlayment has approvals from ICC-ES and HUD
• Meets ASTM F2419, Standard Practice for the Installation of Thick Poured Gypsum Concrete Underlayments and the Preparation of the Surface to Receive Resilient Flooring

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