FIRM-FILL® 4010 Floor Underlayment

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FIRM-FILL® 4010 Floor Underlayment is designed for thin capping of concrete in new construction or over damaged concrete in renovation projects. FIRM-FILL® 4010 Floor Underlayment's high strength and superior bonding characteristics will provide concrete floors with new life and exceptional surface hardness, offering compressive strengths ranging from 3500 to 5500 psi.

FIRM-FILL® 4010 Floor Underlayment Recommended Applications

Thin capping capabilities over:

New concrete
Cracked or damaged concrete

FIRM-FILL® 4010 Floor Underlayment Features and Benefits

FIRM-FILL® 4010 Floor Underlayment has exceptional compressive strengths from 3500 to 5500 psi
FIRM-FILL® 4010 Floor Underlayment is cost efficient
Creates a smooth, flat, crack-free surface
Rapid installation; up to 40,000 square feet installed per day
FIRM-FILL® 4010 Floor Underlayment requires no troweling
Unique bonding capabilities
Proven performance and durability
Quick drying; can be walked on in 90 minutes
Expert application; installed only by trained, Licensed Applicators


Technical Data	Properties	ASTM

Weight	7.8 psf at 3/4"	C-472

Thickness	Feather edge in transitions to 1-1/2" (26mm)

Compressive Strength	3500 - 5500 psi	C-472

Fire Hazard Classification	Flamespread index 0; Fuel Contribution 0; Smoke Density 0	E-84

Patty Size	7" (203mm) plus or minus 1/2" (13mm) in diameter

Sand	1/8" (3mm) or less washed plaster, masonry sand or silica sand	E-11

UL listings	Listed in over 83 1, 2, 3 and 4 hour floor/ceiling assemblies

FIRM-FILL® 4010: Recommended Specifications | Project References

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