The Ultimate Vinyl Siding Insulation System
Shelter Enterprises Backerwrap™ system is a combination of Shelterwrap HD™, Shelterform™ and Insul-Start™. This unique multi-layered insulation system provides you with the maximum air infiltration protection available on the market today, while wall cavities are allowed to breath, prevent mold and mildew.
Shelterwarp HD™ provides the first layer of insulation and its high rigidity creates a level sub-surface for your vinyl siding. Shelterform™ provides the second layer of insulation and a rigid support system that prevents buckling, denting and insect nesting under the vinyl siding. This combination makes Backerwrap™ the ultimate insulation system on the market today.
• Provides a layered insulation system which significantly reduces
air Infiltration, significantly reduces energy costs.
• Shelterwrap HD™ underlayment provides more rigidity for better
leveling and superior finish.
• Shelterform™ custom fit drop-in insulation provides a rigid support
system for vinyl siding to prevent buckling.
• The Backerwrap™ system provides permeability which allows the
wall cavity to breathe, this reducing the risk of condensation within
the wall.
• Form fitting prevents insect nesting. EPS products do not produce
offgassing and does not support fungus or bacteria growth.
(Shelterwrap is not a vapor barrier).
R-value
The R-value for a wall system is determined by ASTM C236. the “Guard Hot Box” method, which vary by siding prof ile:
Double 4"” = 3.3 R-value
Double 4.5"” = 3.7 R-value
Double 5”" = 3.4 R-value
Double 4”" Dutch Lap = 3.6 R-value
Double 4.5"” Dutch Lap = 4.0 R-value
Double 5”" Dutch Lap = 4.0 R-value
Triple 3”" = 3.7 R-value
Horizontal 8"” = 3.0 R-value
Shelterwrap HD R-values
1/4"” thick = 1.2 R-value
3/8”" thick = 1.6 R-value
1/2”" thick = 2.1 R-value
3/4”" thick = 3.1 R-value
1”" thick = 4.2 R-value
R-values stated above are at
75 degrees F. R-values
actually increase as the
temperature goes down.
Permeance
5.0 water vapor permeance
of 1” thickness, max. perm
Test Method ASTM E96
Concrete Applications