Using Dow's Styrofoam* residential sheathing extruded polystyrene insulation board on your exterior walls will boost the performance of the entire wall system. This investment will pay for itself in just a few years and will continue to provide value for years to come.
Styrofoam* polystyrene insulation
Superior R-value 3
Plastic film on both sides
Moderates temperature in walls
Reduces moisture condensation
Provides a level,even surface for exterior sheathing
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