BackerBoard
Siding Insulator & Underlayment

BackerBoard is manufactured from RayLite brand expanded polystyrene insulation.  RayLite is a superior quality insulation that is extremely lightweight.  RayLite resists water absorption, will not mold, rot or decay and will not create a second moisture barrier.  RayLite BackerBoard cuts easily with a knife or can be scored and snapped over a sharp edge.  RayLite BackerBoard's high compressive strength and R-value of 3.85 per inch @ 75° F make it an excellent siding underlayment and insulator.

RayLite Custom Fit BackerBoard

  • Is designed to fit any siding profile.
  • Increases impact resistance for siding.
  • Helps reduce drafts and energy costs in the home.
  • Improves looks of siding with less lap exposure and truer profiles.
  • Reduces accumulation of wind driven dirt and streaking.
  • Packaged two squares per bag.
  • Other related products such as corner posts and starter strips available for complete system installations.

Standard Flat Backer Board        Standard Contour Backer Board

STANDARD SIZES
2 SQUARES/200 SQ. FT. PER BOX

• Regular
    3/8" x 8 5/8" x 72"

• Vinyl
    3/8" x 9 3/18" x 72"

• Contour Double 4
    3/8" x 8" x 72"

• Contour Double 5
    3/8" x 10" x 72"

• Double 4
    3/8" x 5 1/4" x 72"

• Double 5
    3/8" x 6 1/4" x 72"

 

Home, Products, Contact Info, Locations, Company Info

 

Corporate Headquarters
Minneapolis/St. Paul
9091 County Road 50
Rockford, MN 55373
 

Phone: (763) 477-5854
Fax: (763) 477-5863

 

Regional Office
Chicago/Milwaukee/St. Louis
1101 Lori Lane
Mendota, IL 61342