Free Shipping and BOPIS

Rmax Thermasheath

Model # 787264

Internet # 100549260

Store SKU # 787264

3 R-6 1 in. x 4 ft. x 8 ft. Polyiso Rigid Foam Insulation Board

This item has been discontinued.
The Home Depot no longer carries this specific product.

$19.47 /each


Model # 787264

Internet # 100549260

Store SKU # 787264

R-Matte Plus-3/Thermasheath-3 is rigid foam plastic thermal insulation board composed of environmentally sound, closed cell, polyisocyanurate foam bonded to a durable white-matte (non-glare) aluminum facer and a reflective reinforced aluminum facer. This product is suitable for use in wall sheathing applications in new residential, commercial and agricultural buildings and for thermal retrofit construction to existing buildings. This Energy Star qualified Rmatte Plus-3/Thermasheath-3 provides R6 with dimensions of 1 in. x 4 ft. x 8 ft. This product is designed for exterior and interior, non-structural uses.

  • Rmax Polyiso sheathing offers the GREATEST R-value per inch currently available in a rigid foam board.
  • R-Matte plus-3/Thermasheath-3 is applied to the exterior or interior face of wood or metal studs to cover all studs, sills, plates and header constructions, thereby providing insulation over areas not normally covered by insulation products
  • Superior resistance to moisture and vapor in above grade applications.
  • Polyiso ridgid foam board offers superior fire protection properties compared to any other ridgid foam board insulation.
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings.
  • When taped and flashed, the Rmax Polyiso board greatly reduces air infiltration and prevents thermal bridging caused by heat and cold tranmission through studs.
  • Lightweight and easily cut to size
  • Note: Product may vary by store

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Product Depth (in.) 
Product Height (in.) 
Product Length (ft.) 
8 ft 
Product Thickness (in.) 
1 in 
Product Width (in.) 
Insulation Application Type 
2x4 Walls,2x6 Walls,Ceilings,Exterior Sheathing,Garage 
Insulation Type 
Product Weight (lb.) 
7 lb 
R Value 
Sheathing Type 
Warranty / Certifications
ENERGY STAR Certified 
Warranty Information 
Standard Warranty 


Rated 4.5 out of 5 by 2 reviewers.
Rated 4.0 out of 5.0 by Good product, easy to install. Installs quite easy. Use extra fine tooth wood saw to cut to size. When picking up material from store INSPECT IT for damage to the corners and sides! The do not pay much attention to the fact that this board is quire fragile and it gets damaged easy if mishandled. REMEMBER YOU PAY $20 + TAX A PIECE FOR THIS STUFF! January 27, 2015
Rated 5.0 out of 5.0 by Very light weight and insulates great I used this to insulate my attic access. As soon as you open the door on a cold day you can really tell it's working great. It's super light weight makes it seem like it's not even there when I'm opening the door. I used regular liquid nails to put it up and it's staying very well December 10, 2014
  • 2015-08-04T11:41:20.463-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_2, tr_2
  • loc_en_US, sid_100549260, prod, sort_default
1-2 of 2


Store Exclusive. This item is available for purchase in select stores only.