Siding Underlayment

Pactiv is the leading manufacturer of underlayment for siding, offering three types of underlayment:
· 4’ x 50’ fanfold, and
· 2’ x 8’ and 4’ x 8’ insulation board
All Pactiv Building Products siding underlayments are extruded polystyrene (XPS). XPS is particularly suited for siding applications because of its closed-cell structure, which results in an underlayment product with low moisture absorption, easy installation, and less crumbling or breakage.

Foundation and Basement

Walls

Residential walls benefit from GreenGuardâ Products at several areas in the wall system. Whether it’s wall sheathing, housewrap, or sill sealer, there’s a GreenGuardâ product to help add energy efficiency and/or protection from moisture infiltration to the wall.