0719968530015

R-Matte

Model W-N5075X

Internet #100317820

Store SKU #464947

Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board

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Product Overview

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 R5 with dimensions of .75 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 tranmission through studs
  • Lightweight and easily cut to size
  • How much do you need? Let our calculator help:
    Insulation calculator button

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Customer Questions & Answers

17 Questions7 Answers

Customer Questions & Answers

Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board

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This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
 
2 answers

can you use on top of concrete floor with sleepers?

This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
Asked by
Traverse City, MI
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August 16, 2014
I want to insulate floor of office in corner of garage. Plan to build sleeper floor. Will this work in this application?
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Answers (2)

Asked by
Austin, TX
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Home Improvement Profile: DIYer
March 17, 2016
Answer: 
I beg to differ with the other answer, I think you *can* use it to insulate a floor. I've insulated many floors with rigid foam insulation with a compressive strength of only 15 psi (including in my own home), and this product is 20 psi, which is even stronger.
You just can't use sleepers, and I don't know why you'd do that anyway, since it seems old school. If you lay plywood directly on the Read More
I beg to differ with the other answer, I think you *can* use it to insulate a floor. I've insulated many floors with rigid foam insulation with a compressive strength of only 15 psi (including in my own home), and this product is 20 psi, which is even stronger.
You just can't use sleepers, and I don't know why you'd do that anyway, since it seems old school. If you lay plywood directly on the foamboard, which you should, then you distribute the weight across the whole surface. But with sleepers, the weight would be concentrated where the 2x4s make contact with the foam.
Assuming you're installing at-grade, your stackup would be your concrete slab, then a layer of silicone paper as a moisture barrier, then your foam, then 3/8" or thicker plywood (run in the opposite orientation of the foamboard), then a second layer of 3/8" or thicker plywood installed diagonally, and screwed to the first layer, then padding and finish flooring. If that subfloor is too bouncy for your tastes, you can use a rotary hammer to drill some holes into the slab and secure your subfloor with concrete screws like Tapcon.
Let's do the math: For a 300-lb. person, with one foot being 8.5" x 3", that's 300 ÷ (8.5 x 3) = 11.8 lbs. per square inch. So, this person could walk directly on the 20 psi foam, but in fact you'll have plywood on top of it which will distribute the load. Read Less
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August 25, 2014
Answer: 
Hi TCStevieD,
This insulation is designed to cover the entire wall surface including the studs.
Using it between sleepers on a floor will reduce its effectiveness.
It is not designed to support any structural weight. Thus you cannot lay a floor over it.
Mike,
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This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
 
1 answer

Do you have this product bigger than 3/4 thick. Also, can be used outside a block house

This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
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May 14, 2016
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Answer (1)

July 4, 2016
Answer: 
Thank you for your recent inquiry with The Home Depot, RT. You can view the various thicknesses of this foam insulation board we carry over 3/4" here:
http://www.homedepot.com/b/Building-Materials-Insulation-Rigid-Insulation/1/1375-in/N-5yc1vZbaxxZ1z0uat1Z1z0z6bqZ1z0z6jaZ1z0z6jjZ1z0z6k1Z1z0z6kp?NCNI-5
It can be used as an exterior sheathing as long as it is covered by siding of some type.
We appreciate
Read More
Thank you for your recent inquiry with The Home Depot, RT. You can view the various thicknesses of this foam insulation board we carry over 3/4" here:
http://www.homedepot.com/b/Building-Materials-Insulation-Rigid-Insulation/1/1375-in/N-5yc1vZbaxxZ1z0uat1Z1z0z6bqZ1z0z6jaZ1z0z6jjZ1z0z6k1Z1z0z6kp?NCNI-5
It can be used as an exterior sheathing as long as it is covered by siding of some type.
We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
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This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
 
1 answer

Can this be used on a concrete, basement wall? If so, what is the best way to attach it?

This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
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January 14, 2016
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Answer (1)

January 14, 2016
Answer: 
Hello Anonymous,
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.
Masonry Wall Construction
- R-Matte Plus-3 is applied to either
the exterior or interior face of concrete or concrete masonry walls to
provide a
Read More
Hello Anonymous,
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.
Masonry Wall Construction
- R-Matte Plus-3 is applied to either
the exterior or interior face of concrete or concrete masonry walls to
provide a layer of continuous insulation (ci) over the entire surface. It may
be secured to the inside face of a concrete or concrete masonry wall,
over or under the furring strips, and covered with a minimum 1/2" gypsum
wallboard interior finish. Adhesives, screws or nails may be used to hold
the R-Matte Plus-3 in place against the wall temporarily, until the furring
strips and gypsum wallboard are installed. The furring strips and gypsum
wallboard must be secured with suitable screws or nails
Left click on the photo of the product you are interested in at Home Depot.com. Then detailed installation instructions and product specifications can be found by clicking on the orange arrow beside the word “specification” which is below the photo of this product on Home Depot.com. You will find an installation and user guide in a box to the right. Read this over carefully to see if this is right for you.
Thank you for your inquiry.
Charlotte from The Home Depot How To Community. Read Less
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This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
 
1 answer

Unavailable in Colorado?

This question is from Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board
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December 11, 2015
I am trying to get a hold of this product in Colorado. My local store (80302) told me they can order it in but the minimum order for this product is 120 sheets, over $2,500! Can you tell me what the closest store that carries this product is from zip code 80302? Can my local store do a transfer from a store that carries it?
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Answer (1)

December 31, 2015
Answer: 
Thank you for your recent inquiry with The Home Depot, Ethan. This insulation board is not carried in any stores within 100 miles of 80302. Since it is only carried in select Home Depot stores, a special order in the store is the only way to get it in your area. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
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Customer Reviews

Rated 4.9 out of 5 by 10 reviewers.
Rated 5.0 out of 5.0 by Great stuff I used this product to make an enclosure box for my attic stairs. Just a little something to fit over the attic stairs when they are closed to prevent heat and cooling loss. It worked perfectly. It's very easy to cut with a razor knife and a drywall square. It actually cuts very similar to drywall. It does a great job at insulating too. I notice a huge difference in the surface temperature of my pull down attic stairs. Before when the attic stairs were closed the surface of the stair hatch was hot to the touch, now it is closer to room temperature. not to mention I have less air loss. I will be using this more. July 15, 2014
Rated 5.0 out of 5.0 by Great insulation for garage doors! I ordered this online and it was ready for me at the store as soon as I placed the order. I cut it in front of the store to fit into my car. I placed some 3" x 12" foam board spacers to give the air space and placed the foil side towards the inside of the garage doors to reflect the heat. June 9, 2015
Rated 5.0 out of 5.0 by Made a solar heater with it Too many years ago Mother Earth magazine had an article describing how to make a solar powered window heater. We bought this stuff, some black paint and a pane of glass. We already had the duct tape and knife. Made the window heater as per instructions. Stuck it in an east facing window. It worked perfectly! That was when I lived in northern Louisiana. Later, when I built a barn, I used it as insulation under the tin roof. Again, no complaints. The backing makes it stronger than plain poly boards. Those things broke way too easy. September 11, 2014
Rated 4.0 out of 5.0 by Rigid Insulation I own a drywall construction business in Florida and this is a great product for use on concrete or c.m.u. walls. It is easy to cut and install and provides good insulation for exterior walls. It also has moisture protection qualities as well as sound deadening qualities. It works great in conjuntion with either 1x2 p.t. furring strips or 7/8" metal hat channels over top of the insulation allowing an air space and creating an overall 1-1/2' thickness to allow for standard electrical box installation on c.m.u. walls without having to break out the block for the boxes or e.m.t. conduit. July 28, 2010
Rated 5.0 out of 5.0 by Worked for application that I needed it I rented the Home Depot truck to get these to my house and was very convenient and reasonably priced. Was very happy with quality of sheets and help at Home Depot. January 20, 2015
Rated 5.0 out of 5.0 by Works in a deep freezer's door. I have a deep freezer out in the garage. The original insulation of the freezer door collected ice and the old inside hard plastic broke apart. I needed away to insulate the freezer door. Between my brother and I. We came up the idea to us a foam insulation board. So I got the insulation board and cut it to size to fit the inside of the door. Then I use the expanding foam around the edges of the insulation board. The expanding foam (when dried) will hold the insulation board in place and also seals out the moister between the insulation board and the freezer door. It has been over a month now and I have no trouble with the foam insulation board in the freezer door. Also no sweating on the exterior side of the freezer door. October 25, 2011
Rated 5.0 out of 5.0 by easy to use Several rooms of our 2-story house have walls that are exposed to attic space on the back side. In several locations, the fiberglass batts had drooped from between the studs, leaving the backside of the drywall exposed to extreme hot and cold of the attic. I used this product to provide a rigid support to hold the fiberglass in place between the studs, as well as adding an additional R-5 on the attic side of the wall. It's easy to cut to end on studs or fit odd shapes with a household razor or sharp knife. I attached with roofing nails (with plastic washers) across the attic side of the studs. This product is lightweight, so few nails are needed. Note: this product acts as a vapor barrier, which you don't want on the (cold) attic side of the wall. Don't seal the edges to make it airtight or you risk water condensing inside the wall cavity. January 28, 2010
Rated 5.0 out of 5.0 by excellant sevice Very fast with shipping. it was like dealing with family. I really enjoyed how much everyone went out of there way to help me. Thank you for the help I got at Home Depot. Very pleasant people at Home Depot, in Alpena Michigan. December 10, 2013
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