Through warranted performance, Dow provides support for you and your customers that lasts. STYROFOAM SISâ„¢ Brand Structural Insulated Sheathing is backed with the same 15-year limited thermal performance warranty as our other polyisocyanurate insulation products. It is also included in the 10-year warranty for WEATHERMATEâ„¢ Weather Barrier Solutions. Check out the warranties for details.
Dow Polyisocyanurate Insulation 15-Year Limited Thermal Warranty (95KB PDF)
WEATHERMATEâ„¢ Weather Barrier Solutions Limited Warranty (490KB PDF)
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