FIRM-FILL® 3310+

FIRM-FILL® 3310+, a premium poured floor underlayment from Hacker Industries, Inc., delivers best in class performance with compressive strengths from 3000-3900 psi. Ideal over wood or concrete subfloors in multi-family, hospitality, and renovation projects, FIRM-FILL® 3310+ maximizes sound control and creates an enhanced surface for finished floor coverings.

Recommended For

Multi-Family Application / Market

Recommended for Multi-family, custom homes, commercial buildings, hotels & motels, & renovation projects.

Features & Benefits

  • Easy application, fast setting; light traffic can return within hours
  • Over 105 UL listings; ICC-ES Legacy Report
  • Can be poured before or after drywall, as specified
  • Specify with FIRM-FILL® SCM acoustical control mats for improved acoustical performance
  • Meets ASTM F2419 and Tile Council of North America F180, F200
  • Installed by trained Licensed Applicators

Product Resources

Key: Word   PDF   Web Page
Product Submittal
3-Part Specifications
Project References
Drying Conditions Flyer
Post-Pour Instructions
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 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 3000-3700 psi C472M
Thermal Performance K-value of 2.8Btu/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 Listing Listed in over 100 1, 2, 3 and 4 hour floor/ceiling assemblies