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3/4 in. x 4 ft. x 8 ft. R-2.89 Foam Insulating Sheathing

  • Cost effective insulation
  • Energy Star qualified
  • 3/4 in. x 4 ft. x 8 ft. R-2.89 Foam Insulating Sheathing
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Product Details

R-Tech is a cost effective way to increase your project energy efficiency. EPS is a fully recyclable material. R-Tech is also available in thicknesses ranging in 1/8 in. increments from 3/8 in. to 5 in.

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

83Questions
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Q:I have an attached garage where my back wall is next to an interior house wall. It has 1/2" drywall on it already. Can I glue the R-Tech insulation to the existing wall and then attach new 1/4" drywall to that?
by|Sep 15, 2022
1 Answer
Answer This Question

A:  Yes. Need to install 15 minute thermal barrier over the insulation. (1/2" sheet rock). A single component urethane tube adhesive can be used. Contact Insulfoam Technical Center for list of approved adhesives.

by|Sep 21, 2022
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    Q:How many peices to go on room 16 long 16 wide
    by|Sep 6, 2021
    1 Answer
    Answer This Question

    A:  16' x 16' = 256 sqft R-Tech 4' x 8' = 32 sqft. 256/32 = 8 sheets

    by|Sep 21, 2022
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      Q:I'm wanting to insulate my garage door.
      by|Nov 19, 2019
      2 Answers
      Answer This Question

      A:  I would use an adhesive like liquid nails

      by|Nov 21, 2019

      A:  Typically a water based adhesive works best when adhering R-Tech to a garage door. Below is a link the the Insulfoam Technical Bulletin listing the compatible adhesives. https://www.insulfoam.com/wp-content/uploads/2014/04/TB26-EPS-Compatible-Adhesives.pdf

      by|Nov 22, 2019
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        Q:can this product be used for walk-in coolers and if so what thickness for an R32 value?
        by|Apr 24, 2019
        1 Answer
        Answer This Question

        A:  Dear Jeffrey: You have the right idea, but you should use Foamular XPS foam board instead. XPS provides R-5 per inch of thickness and does not absorb moisture, so this would be ideal for your walk-in cooler. See: Foamular 250 Model # 52DD, Home Depot Internet #202085962 Store SKU #307101 Also make sure your seal the joints between the foam board panels, to block air leaks. DAP 230 is good for joints and small gaps. The 'Window and Door' version of Great Stuff foam is good for larger gaps. Both must be applied above 55 degrees -- so your walk-in cooler would need to be turned off. I hope this is helpful, Mark

        by|Apr 25, 2019
        Showing 1-4 of 83
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        Customer Reviews

        4.5 out of 5
        (17)
        • 4.5
          out of 17 reviews
        • 100%recommend this product
        Filter by:
        Showing 1-10 of 17 reviews
        easy installed using for soundproofing in vocal booth
        easy installed using for soundproofing in vocal booth
        by
        • DIY
        • Verified Purchase
        • Recommended
        3 found this review helpful
        Used between furring strips
        I didn't use this over sheathing but in my 1950s furring strip on cinder block home. With the furring strips, there is not much room for insulation but when I re-modeled the bathroom, this 3/4" thick insulation fit great in between the cinderblock, furring strips and drywall. It doesn't have much R value but anything helps in my cold house. Ive noticed a slight different in insulation. I used a utility knife to cut up. The foam is messy despite how sharp your blade is.
        by
        • DIY
        • Recommended
        3 found this review helpful
        Great for blocking knitted items
        I needed a surface to block knitted items. This board works great. Accepts pins well. Lightweight and rigid, stores vertically.
        by
        • Recommended
        11 found this review helpful
        The versatility of this product met my needs amazingly well.
        It was large, it was ridgid, it was light, it was affordable, it was paintable--it was just what I needed for making two backdrop stages for a vacation Bible school. Admittingly it was an aberrant use of foam insulation, but the kids loved it! I peeled off the foil, laid 5 piecies on the ground, drew and painted the scene, then turned them over and connected them with duck tape. Then stood them up.
        by
        • Verified Purchase
        • Recommended
        39 found this review helpful
        Rating provided by a verified purchaser...
        Rating provided by a verified purchaser
        by
        • Verified Purchase
        5 Star Review
        Rating provided by a verified purchaser
        by
        • Verified Purchase
        5 Star Review
        Rating provided by a verified purchaser
        by
        • Verified Purchase
        Great product. Too bad Home Depot is often out of this particular brand, since they should have m...
        Great product. Too bad Home Depot is often out of this particular brand, since they should have more in stock.
        by
        • Verified Purchase
        • Recommended
        work well
        work well
        by
        • Verified Purchase
        • Recommended
        1 found this review helpful
        I acquired this Foam Insulating Sheathing to partition off a portion of a space for the reason of...
        I acquired this Foam Insulating Sheathing to partition off a portion of a space for the reason of creating an environment within an environment . It is light weight, and flexible and is sheet sealed to aid with cleaning, and the mirrored silver finish adds a brightness to the overall effect of the micro-environment . I find this product to be simple to work with and highly effective. I am sure that I will buy more in the next 6 months
        by
        • Pro
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        • Recommended
        Showing 1-10 of 17 reviews

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        Ratings
        (143)
        (17)
        (177)
        (270)
        Product Thickness (in.)0.75 in0.75 in0.5 in0.5 in
        Insulation R-ValueR2.65R2.89R3R3.2
        Insulation Location2x4 Wall,2x6 Wall,Attic,Basement,Ceiling Insulation,Crawlspace,Exterior Sheathing,Floor,Garage,Re-Siding2x4 Wall,2x6 Wall,Attic,Basement,Crawlspace,Exterior Sheathing,Exterior Wall Foundation,Garage,Under SlabExterior Sheathing2x4 Wall,2x6 Wall,Attic,Basement,Ceiling Insulation,Crawlspace,Exterior Sheathing,Garage,Re-Siding
        Insulation FeaturesWater ResistantStructuralFormaldehyde FreeFormaldehyde Free
        Faced or UnfacedUnfacedFacedUnfacedFaced
        Sheathing TypeEPSEPSXPSISO
        Pack Size 64148
        THD SO SKU 192627
        View ProductView ProductView ProductView Product