What is CedarMAX Insulated Siding?

CedarMAX Insulated Siding is a complete thermal cladding system that is recognized as a form of “continuous insulation,” or insulation installed on the outside of your home that helps reduce energy loss. Integration of ProVia's exclusive Super Polymer Formulation with rigid foam insulation makes CedarMAX the perfect choice of exterior cladding for your home.

Available in three styles – 7-inch single lap, 4-inch triple Dutch lap and 6-inch double lap – as well as 30 colors, CedarMAX insulated siding provides stylish options for improving the energy efficiency of your home.  


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Installation of CedarMAX insulated siding breaks the "thermal bridge" between the home's studs and exterior cladding. Thermal bridging occurs when materials with poor insulating properties contact each other, allowing heat to flow through them.  Because most home insulation is installed between the studs, heat escapes through the studs and exterior cladding.

Insulated siding reduces thermal bridging and now is accepted as home insulation in various energy efficiency programs. In fact, insulated siding has been added to the checklist of building products or methodologies that can help meet the requirements to qualify new homes under ENERGY STAR Qualified Homes Version 3.

Whether you prefer single lap, double lap or triple Dutchlap siding, CedarMAX provides the best overall value compared to other siding types.

CedarMAX Insulated Vinyl Siding R-Values
6-inch double lap - 2.4
7-inch single lap - 2.3
4-inch triple Dutch lap - 2.8

R-Values are based on Federal Trade Commission requirements under the ASTM C1363 standard, which provides stringent, repeatable, and reproducible results. While R-Values for some profiles produced through ASTM C1363 testing may result in lower R-values than simulation modeling, the home insulating performance of insulated siding has not changed. ASTM C1363 testing provides added assurance of its energy efficiency performance and R-value results.