LOW-E Reflective Insulation Roofing


Roofing underlayment to help improve your roofing systems energy efficiency

Therma Sheet Roofing Underlayment is manufactured in the USA by Environmentally Safe Products, Inc. It is a 99% pure polished aluminum facing heat laminated to a closed cell foam core. Preferably it is used in conjunction with traditional felt paper. The product is very lightweight and easy to install. The material composition of Therma Sheet allows it to outlast and outperform yesterday’s underlayments. Therma Sheet used under your roofing system will help cut your summer air conditioning bills. It greatly reduces attic heat gain making this space more usable and the rest of the house cooler.

LOW-E Reflective Insulation resists all three types of heat transfer: convection, conduction, and radiation. This space age product also provides a full vapor barrier with sound deadening properties.

What Does LOW-E Mean For You and Your Roof

All building products have an “e” rating, most of them over .80. Understanding what LOW-E means can be difficult. All surfaces have an “e” rating from .01 to 1.0. The “e” stands for emissivity, which is the ability of a surface to reradiate or give off radiant heat to a cooler surface. The lower the “e” rating, the lower the amount of radiant heat the surface will give off. All building products have an “e” rating, most of them over .80.

HEAT goes to COLD by one of three ways: CONDUCTION, CONVECTION & RADIATION

CONDUCTION – The transfer of heat from a warmer object to a cooler object is called conduction. Conduction is slowed by insulation.

CONVECTION – The movement of air as a result of air being warmed. Warm air rises seeking the coldest point.

RADIATION – Electromagnetic waves which directly transport heat energy through space. Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection.

Advantages of Installing Low-E Reflective Insulation:

  • Energy efficient providing for an excellent thermal break and vapor barrier – in one single insulation
  • Increased R-Values in systems with an airspace-R-6 (2-3”). R-Value rating refers to the insulation’s thermal resistance-its ability to resist heat. The higher the R-value the greater the insulating effectiveness
  • Reduces attic temperatures by 31%
  • Protects felt paper from dry rot and premature aging
  • Does not “super heat” roofing materials
  • Title 24 compliant

Even without an airspace, LOW-E creates a thermal break and reduced temperatures on the underside of these roofing systems when installed either under or on top of the felt paper:
*Composition Asphalt Shingles  * Single/Multi-Ply/TPO*  *Metal /Stone Coated  *Concrete Tile  *Clay Tile


*To learn more about LOW-E products, please go directly to their website by clicking the logo below.



Radiant Barriers and Insulation | Sacramento Roofing Contractor