Therma-Sheet Roofing Underlayment is manufactured by Environmentally Safe Products, Inc. It is a 99% pure aluminum facing heat laminated to a foam core.
ICC, CBC, CRC and FRC evaluation (ESR-3652) allows Therma-Sheet to be used as a stand alone alternative to felt paper and other traditional underlayments. The product is very lightweight, easy to install and additionally provides thermal protection under metal roofing, stone coated steel and clay tiles.
By using Therma-Sheet under your roofing system, you can help cut your summer heat gain and when used in conjunction with proper attic ventilation it can also help to control ice damming.
On September 1, 2015 Environmentally Safe Products, Inc received ICC certification for their Low-E Therma Sheet product. As part of the certification process, subtle changes were made to their existing Low-E Therma Sheet product. The most notable change is the newly reinforced facing. The aluminum foil top surface has a 5 x 5 scrim reinforcement. The aluminum foil bottom surface has a tighter 2x2 scrim reinforcement.
PRODUCT CODE: 4LMPX
PRODUCT DESCRIPTION & DIMENSION
Double sided scrimmed aluminum foil laminated to polyethylene foam (1/8" nominal thickness)
LENGTH: 125'(standard with 4" overlapping flange
Tile Roofing: R-9 downward heat flow only(With 1.5" airspace)
Under Shingles: R-0.5 downward heat flow only
CORE MATERIAL: Polyethylene
FACING: 99.4% Polished Aluminum
PERM RATING: ASTM E-96 0.008
EMITTANCE: ASTM C-1371 0.03
Like a radiant barrier, Low-E products also block 97% of radiant heat.
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