Shelterwrap R-values
1/4"” thick = 1.0 R-value
3/8"” thick = 1.5 R-value
1/2”" thick = 2.0 R-value
3/4”" thick = 3.0 R-value
1”" thick = 3.9 R-value
R-values stated above are at 75 degrees F.
R-values actually increase as the
temperature goes down.
System R-value**
1/4"” thick = 4.4 R-value
3/8”" thick = 4.9 R-value
1/2”" thick = 5.4 R-value
3/4”" thick = 6.4 R-value
1”" thick = 7.3 R-value
*R-values based on data from the ASHRAE Handbook of Fundamentals 1993,
Chapter 22
** System R-value includes 3/4” foil lined air space (ASHRAE, Chapter 22)
Permeance
5.0 water vapor permeance of 1” thickness, max. perm Test Method ASTM E96
Value
Shelterwrap offers the best value available for a
leveling board, insulator and air infiltration barrier.
Air Infiltration
In most homes the movement of air from inside out and outside in, is the single greatest cause of energy loss. Areas most greatly affected by air infiltration are window and door frames, sill plates, and through the wall itself. Shelterwrap underlayment insulation, when installed properly, is designed to eliminate costly air infiltration.
Shelterwrap is manufactured of expanded polystyrene laminated with a durable copolymer film in one continuous sheet measuring 4 feet in height by 24 feet in overall length. Being manufactured in this manner gives Shelterwrap a clear advantage in eliminating seams and cracks on the wall, developing a total wall insulating system.
Shelterwrap is ideal in re-cover applications, as well as single ply roof applications that employ mechanically fastened TPO, PVC, EPDM and CSPE membranes. Consult local building codes and membrane manufacturer for system requirements
The EPS core of Shelterwrap meets or exceeds the requirements of ASTM C-578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. In addition Shelterwrap has excellent compressive strength, dimensional stability, and water resistant properties.
Ever since we originated Shelterwrap™ more than 35 years ago, millions of homes across America have cut their energy consumption and lowered their utility bills by using this remarkable material.
Shelterwrap provides permeability which allows wall cavities to breathe, thus reducing the risk of condensation within the wall.
The effectiveness of a particular product to slow down or eliminate air infiltration is not measured in “R-Value”, which means resistance to heat flow. The higher the R-Value the greater the insulating value.
Standards:
ASTM C 518-98 “Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.
Features:
• Co-polymer surfaces
• Accordian fanfold
• Eliminates the need for furring
• Easily installed
Concrete Applications
