Internet #100317820

Model # W-N5075X

Store SKU #464947

0719968530015

R-Matte

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

  • Use in residential and commercial buildings
  • Energy Star qualified
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Frequently Bought Together

Frequently Bought Together

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Product Overview

  • Use in residential and commercial buildings
  • Energy Star qualified
For wall sheathing applications in new residential, commercial or agriculture buildings, the R-Matte Plus-3/Thermasheath-3 is a great solution. It is also for use in thermal retrofit construction to existing buildings. This rigid foam plastic thermal insulation board is 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 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 transmission through studs
  • Lightweight and easily cut to size



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

Product Overview

  • Use in residential and commercial buildings
  • Energy Star qualified
Model #: W-N5075X
Sku #: 464947
Internet #: 100317820

For wall sheathing applications in new residential, commercial or agriculture buildings, the R-Matte Plus-3/Thermasheath-3 is a great solution. It is also for use in thermal retrofit construction to existing buildings. This rigid foam plastic thermal insulation board is 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 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 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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Compare Similar

Compare Similar Products
Brand Project Panels R-Tech SilveRboard
Name FOAMULAR 1 in. x 2 ft. x 2 ft. R-5 Small Projects Rigid Pink Foam Board Insulation Sheathing 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing 24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)
Price
$5.98
$10.98
$34.98 /package
Ratings (113) (143) (112)
Sheathing Type XPS EPS Sound Barrier
Insulation Location Garage 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 2x4 Walls,2x6 Walls,2x8 Walls,Attics,Basements,Ceilings,Exterior Sheathing,Garage,Metal Buildings,Re-Siding
Product Width (in.) 24 in 48 in 24 in
Product Length (ft.) 2 ft 8 ft 4 ft
Faced or Unfaced Unfaced Faced Faced
Product Thickness (in.) 1 in 1 in 1 in
View Product View Product View Product

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
.75 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
R5
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO

Warranty / Certifications

Warranty Information
Standard Manufacturers Warranty

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
.75 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
R5
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
7lb
Sheathing Type
ISO

Warranty / Certifications

Warranty Information
Standard Manufacturers Warranty

Questions & Answers

Can I use this for insulating in the garage doors

Asked by: Judy
There are kits that are pre-cut to fit the metal garage doors. They would be easier to install. But this would work too.
Answered by: DoubtingThomas
Date published: 2018-07-29

Can this be used for the walls of a storage room inside the attic without anything covering it?

We have a door on the 2nd floor of our house that leads into an unfinished attic. I want to create a small storage room just inside that door (9' x 8' x 6') with a door on the back side leading into the rest of the large attic space. These foam panels would be nailed over existing sheetrock on three walls (the front wall that the existing door is in, plus the left and right side walls), but two sides of this new storage room (rear wall and ceiling) would be made only of these foam panels, which would be nailed to new 2x4 framing. I read that this foam insulation is meant to be under sheetrock or plywood as I understand it. Would leaving these two sides of this new room as standalone foam panels only, with no sheetrock, create a fire hazard and/or violate the fire code?
Asked by: Mike
According to the manufacturer it can, provided the attic space is "limited to servicing utilities" https://static1.squarespace.com/static/57a39be0579fb3a3a8540f56/t/5a4d199de4966bb3083ef6e8/1515002269847/Rmax+R-Matte+Plus-3+Application+-+Attic+and+Crawl+Space.pdf
Answered by: chsdiyer
Date published: 2019-01-11

Can I use this to insulate between rafters on a patio cover, even if later I decide to close patio and make into a room?

Asked by: Lou
That is what I would use. It is easy to cut and fit.It is light and won't add a lot of weight.
Answered by: Burns
Date published: 2019-06-12

can insulation be pai..nted and with what type of paint.interior and exterior

can insulation be pai..nted and with what type of paint.interior and exterior
Asked by: tg
Yes, you can use both interior and exterior paints.
Answered by: CommunityAnswer
Date published: 2018-02-28
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Customer Reviews

Rmax R-Matte Plus-3 3/4 in. x 4 ft. x 8 ft. R-5 Polyisocyanurate Rigid Foam Insulation Board is rated 4.7 out of 5 by 27.
Rated 5 out of 5 by from 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.
Date published: 2010-01-28
Rated 5 out of 5 by from R-Matte Drops Attic Temp 20 Degrees Last summer I determined to do something to lower our electric bill. Several options would serve to better insulate and lower the heat transfer into the house. But the best idea seemed to prevent the heat from getting into the attic in the first place. I needed more insulation over the joists and we needed new insulation over the metal duct work on our 30 year old home. If the attic can be made cooler, then it would transfer through the AC ducts and through the ceiling. I purchased 5 to 10 R-Matte boards at a time and secured them to the under side of the roof rafters. In most cases the end of the 8 foot foam boards met on a rafter. Sometimes I cut a few inches off or even added a 2x3 board to one side or the other of the rafter and secured them. I used 2" wood screws and a 1" plastic washer from roof shingle nails. Previously the attic would get 120 or more and now stays in the mid 90's. The AC use to run most of the time and when we use it, cycles on and off quickly. You must have good sofit ventilation and in our case we have ridge vents. The roof decking gets hot and the air below must have a free flow to carry the heat out. This summer I am adding a secondary vent to our porch area because the attic now needs air flow in and out since the foam boards have isolated the soffits from the attic. R-Matte is the way to go. If you can do it yourself, do a little each week and enjoy a cooler home.
Date published: 2009-04-28
Rated 5 out of 5 by from good price easy to work with... good price easy to work with
Date published: 2019-03-26
Rated 5 out of 5 by from 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.
Date published: 2011-10-25
Rated 5 out of 5 by from Rmax Foam Board: I used a laser thermal thermometer showing inside garage door was 45 degrees on ... Rmax Foam Board: I used a laser thermal thermometer showing inside garage door was 45 degrees on a 30 degree day. I am Tired having cold feet from draft coming off a cold 7'x15' wood overhead garage door. My garage is 500 sq ft with a thermostat controlled wall heater rated for 700 sq ft. I installed a ceiling fan to blow heat, in reverse mode, across ceiling and down walls. I determined the air over the cold garage door was cooling the area while the heater was active most of time. I decided to insulate door over thanksgiving, 2018 weekend. Rmax had the best 5-R rating @3/4" thick. Although, I needed 97.5 sq ft, 3 panels only cover 96 sq ft. Then discovered the cut outs for the windows would make up the shortage. I used a ¼” utility blade extended 1” and cut first few pieces of foam board found the blade was hard to control cutting a 4’ long section as blade would walk away from straight edge and flexed during cut causing edges to be angled vs. flat and square. Changed to a ¾” blade and all is well. Bought some liquid nails for foam board to glue foam to top panel of wood garage door. I Waited 24 hrs for cure time per HD product specs. After 30 hrs, opened door to overhead position a 4 of 6 pieces fell to floor. Temps were 65 day 52 night. Called the mfg and told product cure time is 7 Days! Took glue back to HD and got a box of 100 fender washers 3/16” center hole x 1-1/4” diameter and used 1-5/8 sheetrock screws. Screw heads counter sunk nicely in center hole and installed all foam with them. Few days later used thermal laser again on a 20 degree morning. Results were 75 on top door panel to 71 degrees on bottom panel. No more cold feet. Heater now burns on low and cycles on/off. Perfect! Just waiting for a hot day to see how well garage wall air conditioner works. (Pic taken when outdoor temp 39 degrees. Also added new bottom garage door seal from available @ HD.
Date published: 2018-12-12
Rated 4 out of 5 by from 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.
Date published: 2010-07-28
Rated 5 out of 5 by from 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.
Date published: 2014-07-15
Rated 1 out of 5 by from not good for a/c duc not good for a/c duc
Date published: 2018-12-19
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