FIRM-FILL® 3310

An innovative product that elevates gypsum concretes to an unprecedented level of unyielding performance. FIRM-FILL® 3310 floor underlayment's fast-setting surface rapidly eliminates water allowing for accelerated drying time and unparalleled levels of strength and finish over wood and concrete subfloors in new construction and renovation projects.

 

Recommended For

 

Features & Benefits

  • Premium strength, smooth surface over wood and concrete subfloors
  • Eliminates water rapidly for accelerated drying time
  • FIRM-FILL® 3310 floor underlayment can be poured before or after drywall
  • Exceptional compressive strengths from 2000 to 3300 psi
  • Delivers fire resistance and improved sound performance
  • FIRM-FILL® 3310 floor underlayment creates a smooth, crack-resistant surface
  • Expert application; installed only by trained, Licensed Applicators
  • Meets ASTM F2419, Standard Practice for the Installation of Thick Poured Gypsum Concrete Underlayments and the Preparation of the Surface to Receive Resilient Flooring

 

FIRM-FILL<span>®</span> 3310

Product Resources

Key: Word PDF Web Page
Product Submittal
3-Part Specifications
Project References
BIM
CAD
Drying Conditions Flyer
Guidelines for Finished Floor Coverings

Featured Application

Collings Teen Center, West Sacramento, CA:
The Grande at Riverdale - Morris County, NJ
Post Lake at Baldwin Park - Orlando, FL:

 

Technical Data
Properties
ASTM
Weight 7.6 psf at 3/4" C-472m
Thickness 3/4" (19mm) (minimum over wood) to 3 1/2" (89mm); 1/2" (13mm) (minimum over concrete)  
Compressive Strength 2000 - 3300 psi C-472m
Thermal Performance K-value of 2.8 Btu; R-value of 0.36 ft2.h.°F/Btu C-177-76
Fire Hazard Classification Flamespread index 0; Fuel Contribution 0; Smoke Density 0 E-84
Patty Size 8 1/2" (approx. 216mm) plus or minus 1/2" (13mm) in diameter  
Sand 1/8" (3mm) or less washed plaster or masonry sand E-11
UL listings Listed in over 100 1, 2, 3, and 4-hour floor/ceiling assemblies