FIRM-FILL® Gypsum Concrete | Floor Underlayment

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 105 UL listings, FIRM-FILL® Gypsum Concrete floor underlayment is an excellent choice for jobs needing compressive strengths up to 2200 psi.

Recommended For

Multi-Family Application / Market: Apartments, condominiums, hotels, motels, dorms, commercial buildings and commercial renovation projects.

Features & Benefits

Flattens subfloors
Provides excellent STC (sound transmission) and IIC (impact isolation) ratings
Possesses over 105 UL listings
Lightweight and crack resistant
Easily installed; over 25,000 square feet can be installed per day
Quick drying; can be walked on in 90 minutes
Expert application; installed only by trained, Licensed Applicators
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

Specificatie

Technical Data	Properties	ASTM
Weight	7 lbs/ft² at 3/4" (19 mm)	C472M
Thickness	3/4" (19mm) (minimum over wood) to 3 1/2" (89mm)
Compressive Strength	1200 - 2250 psi	C472M
Thermal Performance	K-value of 2.45 Btu/ft²·h·°F; R-value of 0.41 ft²·h·°F/Btu	C177
Fire Hazard Classification	Flamespread index 0; Fuel Contribution 0; Smoke Density 0	E84, E136
Patty Size	8" (203mm) plus or minus 1/2" (13mm) in diameter
Sand	1/8" (3mm) or less washed plaster or masonry sand	E11
UL listings	Listed in over 100 1, 2, 3 and 4 hour floor/ceiling assemblies

Technische specificatie

Unieke ref.firm-fill-gypsum-concrete
ProductfamilieGypsum Cement Underlayment
ProductgroepGypsum Concrete Floor Underlayment
TypeObject (enkelvoudig object)
Publicatiedatum2026-03-02
Editienummer1

Links

Product-urlhttps://hackerindustries.com/firm-fill-gypsum-concrete.shtml
Installatie-instructieshttps://hackerindustries.com/pdfs/Firm-Fill-Post-Pour-Instructions.pdf
Productcertificeringhttps://hackerindustries.com/3-part-specs/FF_Gypsum_Concrete_-_Blue_Bag.pdf

Gerelateerd

Ontworpen inVerenigde Staten
Gefabriceerd inVerenigde Staten

Classificatie

Categorie BIMobjectVloeren - Onderlaag
CSI MasterFormat 2014 Code03 54 13
CSI MasterFormat 2014 TitelGypsum Cement Underlayment
OmniClass-nummer23-15 17 11 13
OmniClass-titelFloor Underlayments

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