Model # 754404

Internet #100572981

Store SKU #754404

R-Matte Rmax Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board
0719968510017

R-Matte

Rmax Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board

  • Polyiso foam bonded to reinforced aluminum foil facers
  • Ideal for do-it-yourself applications to add insulation value
  • ENERGY STAR approved
$1225 /each
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Frequently Bought Together

Installation Options

Product Overview

  • Polyiso foam bonded to reinforced aluminum foil facers
  • Ideal for do-it-yourself applications to add insulation value
  • ENERGY STAR approved
R-Matte Plus-3/Thermasheath-3 is rigid foam plastic thermal insulation board. It's made 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 R3.2 with dimensions of .5 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 rigid foam board offers superior fire protection properties compared to any other rigid 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 transmission through studs
  • Lightweight and easily cut to size

Product Overview

  • Polyiso foam bonded to reinforced aluminum foil facers
  • Ideal for do-it-yourself applications to add insulation value
  • ENERGY STAR approved
Model #: 754404
Sku #: 754404
Internet #: 100572981

R-Matte Plus-3/Thermasheath-3 is rigid foam plastic thermal insulation board. It's made 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 R3.2 with dimensions of .5 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 rigid foam board offers superior fire protection properties compared to any other rigid 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 transmission through studs
  • Lightweight and easily cut to size

Info & Guides

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Name FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing Rmax Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation
Brand Owens Corning R-Matte R-Tech R-Tech
Ratings (19) (40) (34) (32)
Sheathing Type XPS ISO EPS EPS
Product Width (in.) 48 48 48 48
Product Length (ft.) 8 ft 8 ft 8 ft 8 ft
Insulation R-Value 3 3.2 3.85 5.78
Faced or Unfaced Faced Faced Faced
Insulation Application Type 2x4 Walls,2x6 Walls,Exterior Sheathing 2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Product Thickness (in.) .5 in .5 in 1 in 1.5 in
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Specifications

Dimensions

Product Depth (in.)
0.5
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48

Details

Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding
Insulation R-Value
3.2
Insulation Type
Sheathing
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO
Structural
No

Warranty / Certifications

Warranty Information
Standard Warranty

Specifications

Dimensions

Product Depth (in.)
0.5
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48

Details

Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding
Insulation R-Value
3.2
Insulation Type
Sheathing
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO
Structural
No

Warranty / Certifications

Warranty Information
Standard Warranty

Questions & Answers

Something wrong

I believe you got the thickness wrong on your page, its only 1/2 inch thick in the specs
Asked by: lemmings88
The product is "Rmax Plus-3" and dimensions 0.5x48x96 inch. Poor ad composition.
Answered by: IvarHusa
Date published: 2018-03-20

I am going to use these for a ceiling in our garage, can I nail these, or does it have to be glue...

I am going to use these for a ceiling in our garage, can I nail these, or does it have to be glued? I have only the beams to affix too. THanks!
Asked by: plab
Use roofing felt nails with the large plastic head.
Answered by: workingman
Date published: 2018-03-30

If using as sheathing on a shed, does the interior have to be covered as well or can it be left e...

If using as sheathing on a shed, does the interior have to be covered as well or can it be left exposed? I know some foam boards must be covered because of toxin being released in the event of a fire.
Asked by: stereotypicalDIYer
You should not have to cover this on the interior of a shed. This particular product has an very thin layer of aluminum on both sides. Recommend reviewing the product on R-Max website. They have pretty good information there.
Answered by: MR
Date published: 2018-03-20

Can this be used below grade on the exterior foundation?

Asked by: Dj
No, it can't be placed below grade on exterior...it will eventually saturate with ground water and deteriorate.
Answered by: Dave
Date published: 2018-03-20
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Customer Reviews

Rmax Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board is rated 3.9 out of 5 by 40.
Rated 5 out of 5 by from This was the perfect insulation for the feral cat shelter we are building behind our business. I... This was the perfect insulation for the feral cat shelter we are building behind our business. I needed an insulation that wasn't bulky and this fit perfectly against the T 1-ll siding and 2x4 framing. Once that is in place, the next step is to add left over carpeting on the walls and floor as an additional insulator/comfort shelter. Very happy with this purchase.
Date published: 2017-10-27
Rated 5 out of 5 by from Read specifications well!! It's NOT 3 1/2 inches thick, it is only 1/2 an inch thick.
Date published: 2018-02-24
Rated 1 out of 5 by from Very deceptive. I live 2 hours away and purchased the item online and then drove to pick the item... Very deceptive. I live 2 hours away and purchased the item online and then drove to pick the item up. The way it is listed it certainly appears the borders is 3&1-2in board, I know this is not just my stupidity because when I went to pick it up the customer service person made the same analysis. certainly would not have driven 2 hours for 1/2in thick board.
Date published: 2018-01-10
Rated 5 out of 5 by from Garage Door insulation I used this product as a garage door insulation. Installed it on each door panel cut to fit with the foil side facing outward. Must install it on some type of standoff, I used 1 inch pink foam board strips I cut and glued to the door panels, then put this over them leaving an air gap between the foil side of the R-Max panel and the door panel. What a huge difference this makes in the temps inside the garage. My garage door faces south-southeast so it gets very hot and makes the garage hot too. Not anymore. Great product and easy to work with. I added a bubble radiant barrier to the inside as well to keep heat in in the winter too.
Date published: 2011-06-20
Rated 4 out of 5 by from Used for garage ceiling as an alternative to sheetrock to reduce heat loss through roof, whilst b... Used for garage ceiling as an alternative to sheetrock to reduce heat loss through roof, whilst being able to retain access to stuff stored in rafters. Product working out well so far. Easy handling, project was a one-man deal thanks to that. Contrary to the experience that others have had, I was able to cut the product to my needs with a razor knife with no more difficulty than cutting XPS foam. Express delivery service was top-notch as well.
Date published: 2018-02-08
Rated 5 out of 5 by from Used this board previously on insulating the inside surface of... Used this board previously on insulating the inside surface of a metal garage door - worked great and cut down the heat conductance and heat felt inside of the garage. This time, used it on the attic-side, between rafters where the R-13 batts meet the collar-ties. Was able to cut board to fit.
Date published: 2018-01-30
Rated 5 out of 5 by from Light and easy to handle. Cuts easy and leaves a clean edge with a razor. Used in garage or wall... Light and easy to handle. Cuts easy and leaves a clean edge with a razor. Used in garage or walls and ceiling. Going to buy more of it for my attic.,
Date published: 2018-02-21
Rated 5 out of 5 by from it did what i wanted it to do no complaints, I... it did what i wanted it to do no complaints, I recommend others to use this product do i get a cookie for a good review? lollypop?
Date published: 2017-12-20
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