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
Multi-Family Application / MarketMulti-family, custom homes, commercial buildings, hotels & motels, & renovation projects. |
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
External Resources
Product Resources
Technical Data |
Properties |
ASTM |
Weight | 7.6 lbs/ft2 at 3/4" (19 mm) | C472M |
Thickness | 3/4" (19mm) (minimum over wood) to 3 1/2" (89mm); 1/2" (13mm) (minimum over concrete) | |
Compressive Strength | 2000 - 3300 psi | C472M |
Thermal Performance | K-value of 2.8 Btu/ft2·h·°F; R-value of 0.36 ft2·h·°F/Btu | C177 |
Fire Hazard Classification | Flamespread index 0; Fuel Contribution 0; Smoke Density 0 | E84, E136 |
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 | E11 |
UL listings | Listed in over 100 1, 2, 3, and 4-hour floor/ceiling assemblies |