Internet #202532855

Model #320817

Store SKU #614645

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

  • Lightweight, easy to use
  • Multiple thicknesses
  • 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation
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Product Overview

Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. It is offered in multiple thicknesses and dimensions, in both square-edged and tongue-and-groove joints. It is lightweight and easy to use and provides an optimum balance between performance and cost. Manufactured by one of North America's leading insulation and construction materials companies.
  • 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



  • Click here to learn more about Eco Options and Energy Efficiency
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Info & Guides

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Compare Similar Foam Board Insulation

24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)FP Ultra Lite 2 in. x 2 ft. x 4 ft. Earth Tone Brown Foundation Panel
current product
1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation
BrandSilveRboardSTYRO IndustriesR-Tech
Name24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)FP Ultra Lite 2 in. x 2 ft. x 4 ft. Earth Tone Brown Foundation Panel1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation
Price
$2651
/package
$2761
Ratings
(193)
(18)
(165)
Product Thickness (in.)1 in21.5 in
Insulation Location2x4 Wall,2x6 Wall,2x8 Wall,Attic,Basement,Ceiling Insulation,Exterior Sheathing,Garage,Metal Building,Re-SidingExterior Wall Foundation2x4 Wall,2x6 Wall,Attic,Basement,Crawlspace,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-ValueR5R10R5.78
Sheathing TypeEPSXPSEPS
Insulation FeaturesFormaldehyde Free,Vapor RetardantMold Resistant,Paintable,Water ResistantStructural
Compatible Install SurfaceCement,Concrete,Existing Drywall,Existing Insulation,PlywoodCement,Concrete,Existing InsulationCement,Concrete,Existing Drywall,Plywood,Wood
Product Length (ft.)10 ft28 ft
Product Width (in.)48 in4848 in
Faced or UnfacedFacedFacedFaced
Interior/ExteriorInterior/ExteriorExteriorInterior/Exterior
View ProductView ProductView Product

Specifications

Dimensions

Coverage Area (Sq.Ft)
32
Product Length (ft.)
8 ft
Product Thickness (in.)
1.5 in
Product Width (in.)
48 in

Details

Compatible Install Surface
Cement,Concrete,Existing Drywall,Plywood,Wood
Faced or Unfaced
Faced
Insulation Features
Structural
Insulation Location
2x4 Wall,2x6 Wall,Attic,Basement,Crawlspace,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
R5.78
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Number of Pieces
1
Product Weight (lb.)
4
Sheathing Size
8 ft. x 1.5 in. x 48 in.
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
N/A

Questions & Answers

142Questions17Answers

I want to add this as additional insulation to the ceiling in the garage. Currently, the ceiling ...

Asked by Boris November 29, 2020
2
Answers

Boris, Your best bet is to put additional insulation in the attic space above your drywall... Home depot sells roll and loose options. Your drywall in your garage acts as a fire barrier check your local building code.

Can I use this against a closet wall, to help cut down noise between rooms?

Asked by Angi7 November 20, 2020
2
Answers

So I used mine in the garage(walls and ceiling) and it did help but they can still hear my music upstairs when i am in the garage. I would try and use something that absorbs the sound like carpet squares. You could put up the R-Tech and glue carpet squares to it.

Can this be glued to a damp proofing material on a below ground exterior foundation?

Asked by Ron October 5, 2020
1
Answer

Absolutely! This is exactly what it’s made for

can I paint this?

Asked by Patrick September 17, 2020
1
Answer

Not recommended.

Can i use this below a garage slab and can i put 2 sheets high so it is 3” thick?

Asked by Ajw196 September 15, 2020
2
Answers

Yes. You can also ask the Pro Desk to order some made to 3”. This can be made up to 7” thick in some locations.

how does it attach to the wall

Asked by bella September 10, 2020
2
Answers

Glue or fasteners. Check out Insulfoam’s YouTube or website for directions for installation

can this be glued to the interior of a metal building and what adhesive is best to use

Asked by John September 2, 2020
2
Answers

It can. Any adhesives that are water based or solvent free. Ask your local store what they have in stock

Which side to keep the heat out?

Asked by Dave August 8, 2020
2
Answers

Both! Either will do the trick.

Will this hold up to use for in floor heat for a garage?

Asked by Shane July 29, 2020
1
Answer

yes. it is used for radiant floors regularly

How do you put this on concrete walls

Asked by Phyllis July 23, 2020
2
Answers

Probably the best way to put this on a concrete or cinderblock wall would be to glue it with an adhesive. The one that comes to mind is Liquid Nail. It comes in a tube that can be squeezed on the insulated foam with a calking gun. Once it is applied, press the foam to the wall. Liquid nail is not very expensive, so be liberal with the amount you put on the foam. A small bead of adhesive in 8 inch squares would probably be sufficient or a zig-zag patterned lines about 8 inches apart.

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

Customer Reviews

  • 165 Customer Reviews
  • 4.8 out of 5 stars overall
95% of customers recommended.
Overall Ratings
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Cut with a knife and packed into a garage door....
Cut with a knife and packed into a garage door. Makes a huge difference.
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This products used for insulation of my garage door. the temprature of garage drops significantl...
This products used for insulation of my garage door. the temprature of garage drops significantly after installation. it's installation is very easy.
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0
0
easy to work with
I needed 4 sheets to complete the entire garage. at 1.5" thick, it was perfect for my garage doors. I chose to leave the foil side facing the garage for aesthetics. not sure if this will affect the insulation characteristics. hasn't been very hot so time will tell... I used a 4 foot straight edge, a square ruler, 2 clamps, tape measure and a straight blade... not a utility blade. Use the type of blade that you can snap off when you need a new piece. Those are more effective. With a little planning and organization it only took me 2 hours from star to clean up. Fairly easy project even for a novice.
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8
0
Easy material to work with. Though we cut them in halves. Makes it MUCH easier to install. If ...
Easy material to work with. Though we cut them in halves. Makes it MUCH easier to install. If you do the aluminum look facing garage. It will actually help increase your lighting in garage
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2
0
Easy to handle, good quality, great product.
Easy to handle, good quality, great product.
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1
0
This was the only insulation I could find that was 1.5 inches thick. It is perfect to fill in the...
This was the only insulation I could find that was 1.5 inches thick. It is perfect to fill in the voids between the framing of our pole building. I cut it with a heavy duty retractable knife. It cuts very cleanly in 2 passes. It has enough give to easily force it into the openings for a snug fit. Very easy to work with. Feels like it is very well made. I am looking forward to finishing the rest of the building's interior!
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2
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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.
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6
0
Minneapolis, MN
Great garage door insulation
Quality :
5
Value :
4
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.
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24
0
Silverdale, WA, USA
Great stuff...fun to work with
Quality :
5
Value :
5
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. :)
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34
0
Good stuff. Using to insulate between girts on my pole...
Good stuff. Using to insulate between girts on my pole barn.
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