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Rockwool Insulation Specifications

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1-Hour Fire Resistant
Single 2x4 Stud Wall Assembly
(load bearing 1250 lbs. per stud)
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1-Hour Fire Resistant
Double 2x4 Stud Wall Assembly
(load bearing 1250 lbs. per stud)
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2-Hour Fire Resistant
Double 2x4 Stud Wall Assembly
(load bearing 1250 lbs. per stud)


Side Wall Specifications Spray System (Open Blow)

The contents of one bag install in open wall areas by pneumatic equipment with or without adhesive will provide insulation resistance (R) value at the weights and coverages shown below:

R-Value Inches Coverage per bag (sq. ft.) Weight per sq. ft. Bags per 1000 sq. ft.
15 3.5 25.68 1.17 38.99
15.5 3.63 24.79 1.21 40.33
23.5 5.5 16.38 1.83 61.04
34 8 11.27 2.68 88.73
"R" is a measure of insulating ability. "R" means resistance to heat flow. The higher the "R" Value, the greater the insulation value. Tested in accordance with ASTM C 518.

Attic Specifications

R-VALUE* Min Thickness Max. Net Coverage Weight per Sq. Ft. Bags per 1000 Sq. Ft.
38 11.21 18.09 1.66 55.27
33 9.74 20.83 1.44 48
30 9.6 23.44 1.28 42.67
26 8.32 27.04 1.11 36.98
22 7.04 31.96 0.94 31.29
19 6.08 37.01 0.81 27.02
13 4.48 50.22 0.6 19.91
11 3.52 63.92 0.47 15.64

R Value is a measure of insulating ability. R means resistance to heat flow The higher the R value, the greater the insulation value. Vaules were taken at a mean temperature of 75F. Tested in accordance with ASTM C 518.

Test Test Standard Test Results
ASTM E 84 Surface Burning Characteristics  
  Flame Spread 5
  Smoke Development 0
ASTM E 136 Non-Combustible Passed
ASTM E 119-83 w/ Hose Stream 1 Hr. Wall Assembly Passed
ASTM E 119-88 w/ Hose Stream 2 Hr. Wall Assembly Passed
ASTM E 413 Sound Isolation Rating Up to 69
ASTM C 553 Moisture Absorption Passed
NFPA Mod. 275 15 Minute Thermal Barrier Passed*
ASTM C 764 Corrosion Passed
ASTM E 1332 Outdoor-Indoor Transmission OITC up to 48
ASTM E 1338 Fungus Resistance Passed
SBCCI Report #9551 Fire Resistive Construction  
UL Classified per Follow-up procedure   R14191

*Rock-Tight™ Adhesive was used to achieve these results.