Best selection, unbeatable prices.

As wholesale foam sheathing suppliers, IDI wants to provide your business with the best quality products at prices that allow you to be as profitable as possible. Browse our selection now to find the foam board insulation you need.

Closed-Cell Extruded Polystyrene Foam

Tough, closed-cell extruded polystyrene foam with a reputation as a dependable product.

Its superior resistance to water assures long-term R-value retention in such applications as foundation perimeters, wall insulation and drywall laminate. Available in a broad range of densities for any application. Fan fold backer board is also available for your needs. Call for details.

High Thermal Efficiency

If you’re looking for high thermal efficiency at low cost, here it is. R-Max is designed for easy installation in the following applications:

  • New frame wall construction
  • Cavity wall insulation in new masonry construction
  • Interior basement and crawl space insulation covered with minimum ½” gypsum board
  • Insulation between exterior stucco finish and face brick, or frame wall construction
  • Under roof shingles over roof decks, in exposed beam and cathedral type ceilings and A-frame construction
  • Under slab thermal construction
  • Retrofit behind new exterior siding
  • Retrofit behind new interior finish of minimum ½” gypsum board

Product Availability

R-Max is available in standard 4’x 8’ and 4’x 9’ sections with thicknesses from ½” to 4”. Other sizes and thicknesses may be special ordered. Minimum order quantities may apply.

IDI: America’s Wholesale Foam Board Insulation Distributors

Contact Us

View Spec Docs

IDI Locations

Contact Us