Model # 320817

Internet #202532855

Store SKU #614645

R-Tech 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation
0732813100096

R-Tech

1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation

  • Numerous household, hobby and construction uses
  • Easy to cut-to-size and to install
  • Poly-facer provides excellent durability & flexibility
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Frequently Bought Together

Product Overview

  • Numerous household, hobby and construction uses
  • Easy to cut-to-size and to install
  • Poly-facer provides excellent durability & flexibility
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.
  • Specifically developed for wall sheathing, siding underlayment and basement and foundation insulation
  • 8 ft. L easily cuts to desired size
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Moisture resistant with great insulating properties
  • Poly-facer on both sides for durability and flexibility
  • Note: Product may vary by store
  • How much do you need? Let our calculator help:
    Insulation calculator button

Product Overview

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.

  • Specifically developed for wall sheathing, siding underlayment and basement and foundation insulation
  • 8 ft. L easily cuts to desired size
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Moisture resistant with great insulating properties
  • Poly-facer on both sides for durability and flexibility
  • Note: Product may vary by store
  • How much do you need? Let our calculator help:
    Insulation calculator button

Info & Guides

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Specifications

Dimensions

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

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
5.78
Insulation Type
Sheathing
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
4lb
Sheathing Type
EPS
Structural
No

Warranty / Certifications

Warranty Information
N/A

Specifications

Dimensions

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

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
5.78
Insulation Type
Sheathing
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
4lb
Sheathing Type
EPS
Structural
No

Warranty / Certifications

Warranty Information
N/A

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Questions & Answers

Can you paint over this insulation?

Can you paint over this insulation?
Asked by: MsPainter
This foam board has aluminum foil on one side and a thin white plastic skin on the other. Can't paint either of them. HOWEVER, if you are able to peel either the aluminum or the plastic off, you COULD paint it, but better use a LATEX paint!! Oil based paints will eat this stuff like a hog in a melon patch. It will just dissolve with anything besides LATEX!!! Don't know why you'd want to paint it, but it can be done, even though it won't win any beauty awards.
Answered by: UncleChuck
Date published: 2017-09-17

Can I use this to insulate the walls and ceiling of an enclosed trailer?

Asked by: dee
Short answer is yes. BUT.... this is low density stuff and the high density stuff will insulate better. That being said, the high density is alot more difficult to work with. I tried cutting it with a hot wire cutter and well, no go. Low density does fine.
Answered by: UncleChuck
Date published: 2017-06-25

How do I cut rigid form insulation?

How do I cut rigid form insulation?
Asked by: thomas
A few years ago I cut a bunch with a table saw. MMMEEEESSSSSYYYY!!! This time, I built a hot wire foam cutter out of a table top, some wire out of an old hair dryer I got from Goodwill, some PVC pipe and a power supply for electric trains. Does pretty good if you don't push it too fast, and the best part is..... NO MESS TO CLEAN UP!!! Search YouTube for a "hot wire foam cutter"!!! AWESOME ideas!! Uncle Chuck
Answered by: UncleChuck
Date published: 2017-09-06

cutting this material?

what's the best tool to cut this material?
Asked by: pat
I've found that the best and least messy way to cut this foam board is with a hot wire foam cutter. If you're handy, and don't mind building your own, check YouTube for ideas. You'll never go back to knives or saws!!
Answered by: UncleChuck
Date published: 2017-09-18
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Customer Reviews

1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation is rated 4.5 out of 5 by 19.
Rated 5 out of 5 by from Use a electric carving knife to cut This product worked great. The electric carving knife I used to cut the panels is the way to go. My garage and the rooms above it are noticably cooler. Less than $80 to do my double garage.
Date published: 2017-07-11
Rated 5 out of 5 by from Great stuff...fun to work with I insulated my 6' X 12' enclosed cargo trailer every inch from top to bottom with this stuff, and was very impressed after I mounted a 5,000 BTU AC on the back door. It's like a walk-in cold storage freezer. lol The air condition unit now runs for approximately two minutes or less at every fifteen minute interval as opposed to nearly continuous 24/7. Sound proofing characteristics of this product are what I consider to be moderate to very good as well. As each panel went up I could notice the difference as it gradually eliminated an 'echo' throughout the trailer. Could not be happier. Excellent value per sheet. Fun to work with. I used a six inch 'utility scraper' razor blade to cut it up. :)
Date published: 2013-05-07
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-08-09
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-05
Rated 5 out of 5 by from Product performed well... Product performed well
Date published: 2017-08-15
Rated 5 out of 5 by from Very good... Very good
Date published: 2017-05-09
Rated 5 out of 5 by from Retch 1.5 inch perfect for garage doors This 1.5 inch polystyrene insulation is a perfect fit for newer non insulated metal garage doors. Way cheaper than the kits and looks great too. Just cut it with a razor knife and you're good to go.
Date published: 2017-01-31
Rated 5 out of 5 by from Great garage door insulation You can tell the sound difference with this insulation, the doors now sound solid when opening and closing. The 1.5 inch was the exact fit in thickness; I wish I would have done this sooner. I was surprised as how good it came out and how easy it was not to mention the ease of cutting the insulation with a regular sharp knife. (6) 4x8 sheets will insulate (1) 16x8 and (1) 7x8 doors.
Date published: 2015-10-20
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