R-Tech Insulfoam 3/4 in. x 2 ft. x 4 ft. R-2.89 Insulating Sheathing-321354 - The Home Depot


Model # 321354

Internet # 202524151

Store SKU # 285980

Insulfoam 3/4 in. x 2 ft. x 4 ft. R-2.89 Insulating Sheathing

R-Tech Insulfoam 3/4 in. x 2 ft. x 4 ft. R-2.89 Insulating Sheathing

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



Model # 321354

Internet # 202524151

Store SKU # 285980

Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. Made by one of North America's leading insulation and construction materials companies, it is offered in multiple thicknesses and dimensions, in both square-edged and tongue-and-groove joints. It is very easy lightweight and easy-to-use and provides an optimum balance between performance and cost.

  • Designed for use on walls, in basements, as siding underlayment and as foundation insulation
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Cuts easily to make installation a snap
  • Poly-facer on both sides for flexibility and durability
  • Moisture-resistant design to help maintain a water-tight seal

Info & Guides

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Assembled Depth (in.)  .75 in  Assembled Height (in.)  48 in 
Assembled Width (in.)  .75 in  Product Length (ft.)  4 ft 
Product Thickness (in.)  .75 in  Product Width (in.)  24 
Faced or Unfaced  Faced  Insulation Application Type  2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 
Insulation Type  Sheathing  Interior/Exterior  Interior/Exterior 
Product Weight (lb.)  0.2 lb  R Value  2.89 
Sheathing Type  EPS  Structural  No 
Warranty / Certifications
ENERGY STAR Certified  Yes  Warranty Information  n/a 


Rated 5.0 out of 5 by 2 reviewers.
Rated 5.0 out of 5.0 by Works well The insulation works well, given that it is only 3/4" thick. The Reflective foil on one side of the insulation really makes a difference and reflects some heat, so that one can go with a thinner piece than one normally would. Easy to cut and to work with. November 12, 2013
Rated 5.0 out of 5.0 by Exactly what we needed Installed in ceiling of enclosed porch. Matched the existing tiles exactly.Since it's made of foam material there was some cleanup from bits that came off. January 20, 2015
  • 2015-04-24T11:08:49.185-05:00
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Store Exclusive. This item is available for purchase in select stores only.