Deep Fill Underlayment

Low Density Fill™


  • Innovative, ultra-lightweight product
  • Ideal for deep fill applications and structural weight limitations
  • Up to 80% lighter than concrete
  • No thickness limitation
  • Fast drying—ready for topping the next day

Application
Multifamily and light commercial wood frame and concrete construction as part of a subfloor system.

Subfloor
Interior wood, concrete.
Technical Data
Dry Density28-32 lb/ft3 (449-513 kg/m3)
Packaging40 lb. bag
Work TIme10–30 minutes
Storage Temperature50 - 100 °F (10 - 38 °C)
Coverage1/2" thickness: 36 ft2 (3.34 m2)
1" thickness: 18 ft2 (1.67 m2)
2" thickness: 9 ft2 (0.84 m2)
3" thickness: 6 ft2 (0.56 m2)
Installation Temperature50 °F (10 °C) for at least 24 hours prior to installation
Trade TrafficFoot traffic 6–12 hours
Fire Performance (ASTM E84)Flame Spread – 0
Fuel Contribution – 0
Smoke Development – 0
Code Listings:


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