Rapid Floor® Systems                  
RADIANT TECHNICAL DATA SHEET

Compressive
Strength Range 		2000 - 3000 psi (14 - 21 MPa) when tested in 
accordance with modified ASTM C 472.
Installed Weight

1-1/4" (32mm) = 12.7 lb/ft2

(58.7 kg/m2)

Dry Density 115 lbs./ft3
(1840 kg/m3 )
K-Factor 4.96 Btu/(h·ft2·°F) (.7142 W/[m·°C])
Specific Heat .224 Btu/(lb·°F) at 85°F 
(.9385 kJ[kg·°C] at 29.44 ·°C)
Acoustical Performance The acoustical performance of Rapid Radiant ® is 
similar to Rapid Floor® Underlayment. Contact 
Rapid Floor Systems for reports.
Surface Burning Characteristics Flame spread index - 0, fuel contributed - 0, 
smoke development - 0. (ASTM E 84)
Point Loading Typical loading of up to 2500 pounds (1134 kg) 
on a 1" (25.4 mm) diameter disk @ 0.007" max. indentation
   
USGBC LEED Credit Areas
 Impacted by Rapid Floor Radiant Underlayment
Project Category Credit
Indoor Environmental Quality Low Emitting Materials EQ 4.1

<0.24 mg/m3
Materials & Resources Recycled Content
Local/Reg. Materials
Local/Reg. Materials

MR 4.1 ‑ 4.2
MR 5.1
MR 5.2

Fly Ash
Blue Rapids, KS 66411
Las Vegas, NV 89035
Camden, NJ  08103
Brunswick, GA  31520
Job site manufactured with local sand & water

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