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Model # 613010

Internet #100573703

Store SKU #416989

Thermasheath Rmax Thermasheath-3 2 in. x 4 ft. x 8 ft. R-13.1 Polyisocyanurate Rigid Foam Insulation Board
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0719968770015

Thermasheath

Rmax Thermasheath-3 2 in. x 4 ft. x 8 ft. R-13.1 Polyisocyanurate Rigid Foam Insulation Board

  • Energy efficient
  • For residential and commercial buildings
  • ENERGY STAR approved
$ 33 21
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Frequently Bought Together

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Product Overview

  • Energy efficient
  • For residential and commercial buildings
  • 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 R-Matte Plus-3/Thermasheath-3 provides R13.1 with dimensions of 2 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



  • How much do you need? Let our calculator help:
    Insulation calculator button

Product Overview

  • Energy efficient
  • For residential and commercial buildings
  • ENERGY STAR approved
Model #: 613010
Sku #: 416989
Internet #: 100573703

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 R-Matte Plus-3/Thermasheath-3 provides R13.1 with dimensions of 2 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



  • How much do you need? Let our calculator help:
    Insulation calculator button

Info & Guides

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Info & Guides

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
2 in
Product Width (in.)
48 in

Details

Faced or Unfaced
Faced
Insulation Features
Formaldehyde Free
Insulation Location
2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding
Insulation R-Value
R13.1
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO

Warranty / Certifications

Warranty Information
Standard Warranty

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
2 in
Product Width (in.)
48 in

Details

Faced or Unfaced
Faced
Insulation Features
Formaldehyde Free
Insulation Location
2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding
Insulation R-Value
R13.1
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO

Warranty / Certifications

Warranty Information
Standard Warranty

Questions & Answers

I'm looking to install these insulation boards to a finished dry wall closet....the easiest way f...

I'm looking to install these insulation boards to a finished dry wall closet....the easiest way for me would be to use an adhesive bond ...like liquid nails...would this be sufficient bonding to the wall ?
Asked by: mrgolf535
It should be sufficient. These panels are very light weight. They are also 4ft wide which I believe is less than standard distance between wall studs so you can also cut these to fit between the studs and press them in for a friction fit.
Answered by: Dave
Date published: 2018-01-09

Can i use this to insulate my garage? Ceiling and walls?

Want to insulate my garage ceiling to help with the room above which is my kids closet and super cold.
Asked by: Xio
Yes, this item can be used to insulate your garage and closet.
Answered by: CommunityAnswer
Date published: 2019-01-24

Can I use this to insulate on my attached porch roof between the roof rafters?

Can I use this to insulate on my attached porch roof between the roof rafters?
Asked by: rockroom
Yes, it can be used anywhere it will be dry.
Answered by: Scott
Date published: 2018-08-31

Can it be used between studs in a bathroom exterior wall?

Asked by: Jonny5
It certainly could be used that way, but bear in mind that it is a vapor barrier. You want to have just one vapor barrier in your walls, either inside or out. A vapor barrier on both will trap moisture within the wall and cause mold and rot. If your exterior wall already has a vapor barrier (vinyl siding, impermeable house wrap, etc.), then you will be better off using breathable unfaced (or paper faced) batt or blanket insulation, i.e. fiberglass or cellulose.
Answered by: riverhouse
Date published: 2018-10-18
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Customer Reviews

Rmax Thermasheath-3 2 in. x 4 ft. x 8 ft. R-13.1 Polyisocyanurate Rigid Foam Insulation Board is rated 4.8 out of 5 by 59.
Rated 5 out of 5 by from Great! Always figure the best type of foam for your... Great! Always figure the best type of foam for your application. Ie. This type of foam, polyisocyanurate (Polyiso) looses R-value as temperature decreases, upto 25%! To the contrary, expanded Polystyrene (EPS), although a much lower R-value per inch, increases in R-value as temperatures decrease!
Date published: 2019-02-05
Rated 5 out of 5 by from The product has performed as expected and has greatly reduced... The product has performed as expected and has greatly reduced air infiltration.
Date published: 2019-02-05
Rated 5 out of 5 by from R13 in only 2 in. I purchased this rigid insulation to insulate a cinder block basement wall. The sheets were easy to cut and I achieved R13 in only 2 in. of space as compared to extruded polystyrene, which is only R10, and for the same money. My only disappointment was that I planned to use construction adhesive to install for the short term, but this stuff had a slight bow from the store shelf and the polyiso it is too rigid for the adhesive to adhesive to flatten it out, so I ended up using furring strips and 1/4" x 3-3/4" flathead Tapcons to anchor to the block rather than adhesive, which was my long term plan anyway. Not the products fault, but thought you should know how it behaves. Also, tape the seams with the nashua foil tape and fill any large gaps with great stuff (same polyiso product).
Date published: 2015-01-05
Rated 5 out of 5 by from A fine product for post-construction insulating. Recently I retrofitted insulation to the rim joi... A fine product for post-construction insulating. Recently I retrofitted insulation to the rim joists and box joists encircling my basement walls. The result was great! The foil (radiant barrier) probably doesn't contribute much to thermal conservation in this application. But it does provide a neat and soiling-resistant surface. For ease of installation I largely used construction adhesive in lieu of fasteners - and finished the job with a caulk bead around their perimeters. Cutting was neat and easy with fine tooth thin kerf saws. I ran a vacuum while sawing to control dust and particles. Producing repetitive cuts for numerous pieces was easy by just stacking the stock and cutting through the greater depth. The boards easily were custom shaped to accommodate duct boots. And those few pipes serving hose bibbs readily were facilitated by boring and splitting the pieces - just like one does on a tile job. I'll likely use the remaining stock to insulate some attic hatches and crawlspace scuttle covers. It seems to me that multiple thickness of Thermasheath can be laminated when desired. I also believe scraps could be incorporated into voids otherwise filled with closed cell expanding foam - provided a draft barrier is incorporated into the cross-section. This appears to be the same material as used for flat roof sheathing (beneath a membrane) - But I've not ascertained it is of sufficient density to bear those loads (or those imposed on under-slab or foundation periphery insulating aprons... Certainly, if I find that it is, I will be using it there, too, because it is so easy to work with.
Date published: 2019-02-27
Rated 5 out of 5 by from This has been easy to work with as we have... This has been easy to work with as we have been insulating the trunk of our heating and cooling system under our house. We have insulated the bottom. We have not completed the project with insulating the sides but there is a noticeable difference in the level of heating coming out of the register.
Date published: 2019-02-07
Rated 5 out of 5 by from Bought one sheet of Thermasheath Rmax, which I cut up... Bought one sheet of Thermasheath Rmax, which I cut up and used to plug multiple holes and air-gaps in an attic I was insulating. Lightweight and easy to cut with an insulation knife. Would buy again.
Date published: 2019-02-26
Rated 5 out of 5 by from Easy to work with, I used it for continuous insulation... Easy to work with, I used it for continuous insulation on the exterior of the house, during residing project. Excellent product, great value for the money!
Date published: 2019-03-12
Rated 5 out of 5 by from Really easy to work with in my Ram Promaster van... Really easy to work with in my Ram Promaster van build out. Makes it look like a space ship with the reflective heat barrier!
Date published: 2019-04-02
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