SKU: 64291657543

Owens Corning R-5 (15 PSI) FOAMULAR 150 1 in. x 4 ft. x 8 ft. Extruded Polystyrene Foam Board Insulation – Tongue & Groove Edge

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Description

Owens Corning R-5 (15 PSI) FOAMULAR 150 1 in. x 4 ft. x 8 ft. Extruded Polystyrene Foam Board Insulation – Tongue & Groove EdgeFOAMULAR 150 R 5 1" XPS Foam Board Insulation, 4' x 8' Rigid FOAMULAR 150 extruded polystyrene (XPS) board delivers R 5 thermal performance in a 1 inch thickness with 15 PSI compressive strength. Lightweight, easy to score and snap, and moisture resistant for use on walls, basements, and exterior sheathing. Key Features: Energy Saving XPS: Closed cell XPS resists moisture and retains R value in extreme temperatures Durable Strength: 15 PSI compressive

FOAMULAR 150 R-5 1" XPS Foam Board Insulation, 4' x 8'

Rigid FOAMULAR 150 extruded polystyrene (XPS) board delivers R-5 thermal performance in a 1-inch thickness with 15 PSI compressive strength. Lightweight, easy to score and snap, and moisture-resistant for use on walls, basements, and exterior sheathing.


Key Features:

  • Energy-Saving XPS: Closed-cell XPS resists moisture and retains R-value in extreme temperatures
  • Durable Strength: 15 PSI compressive strength suitable for walls, attics, garages, and sheathing
  • Easy to Work With: Scores and snaps cleanly; easy to cut, form, and fit
  • Versatile Applications: Interior/exterior use on wood, plywood, and concrete surfaces
  • Healthy Home Choice: Formaldehyde-free and GREENGUARD Gold Certified

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Extruded Polystyrene (XPS) Rigid Foam Board
Model / SKU 20WE
Compressive Strength 15 PSI
R-Value R-5
Thickness 1 in
Width 48 in (4 ft)
Length 8 ft
Coverage Area 32 sq ft per board
Edge Type Tongue and Groove (product title); also available in Scored Square Edge per variant listings
Faced or Unfaced Unfaced
Interior/Exterior Interior/Exterior
Compatible Install Surface Plywood, Wood
Insulation Features Formaldehyde Free; GREENGUARD Gold Certified; contains minimum 20% recycled content (SCS certified)
Moisture Resistance Closed-cell XPS resists moisture and retains R-value after exposure
Sheathing Type XPS
Number of Pieces 1
Pack Size 4 (retailer pack option)

Frequently Asked Questions (FAQ):

Q: Can this insulation be used both indoors and outdoors?
A: Yes, FOAMULAR 150 can be used on interior and exterior walls; verify local codes for vapor retarder requirements.


Q: Does it help with soundproofing?
A: No. FOAMULAR products are not rated for STC and should not be used for soundproofing.


Q: What are the board dimensions and R-value?
A: Each board is 1 in. thick, 4 ft. wide, and 8 ft. long, covering 32 sq. ft., with an R-5 value.


Q: Is the board faced or unfaced?
A: Unfaced rigid foam board.


Q: What cutting tools are needed?
A: No special tools—score with a utility knife and snap to size.


Sleek Thermal Armor for Clean, Modern Envelopes

This crisp pink panel brings tailored efficiency to the building envelope, wrapping spaces in a refined, continuous layer of comfort. The smooth XPS surface and tidy score lines create an orderly, modern aesthetic during install while delivering steadfast R-value. Use it as exterior sheathing to sharpen facade lines and reduce thermal bridging, then finish with streamlined cladding for a luxe, quiet presence. It’s a discreet essential that elevates performance to a standard of everyday luxury.


Upgrade your envelope with FOAMULAR 150 today for dependable R-5 performance and easy, moisture-resistant installation.

Warranty

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 64291657543

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4.7 ★★★★★
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Taylor Ashley
Draper, US
★★★★★ 4
Okay serum, not as good as the cream though
I am obsessed with the cream version of this so I thought I’d give this a try. The dropper top allows for easy application. The formula is light and non greasy and absorbs easily. No harsh fragrances. I would use it when I had eczema flares on my face and feel like it didn’t work near as well in helping with skin irritation as the cream does. As of now I don’t use it as part of my regular skin care. Do I think it’s a bad product? No, but it didn’t really work wonders for me. Not sure I would purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
E
Verified Purchase
Elizabeth from Houston
San Leandro, US
★★★★★ 5
Helps with redness and softens skin
I have sensitive, mild rosacea skin. Had a facial recently and the aesthetician suggested I get a serum to help with moisturizer as I am almost 40. I’ve tried a lot of serums and either they are sticky and not really hydrating or break my skin out in a rash. This serum is amazing. Helps calm the redness in my cheeks and my skin is moisturized and soft all day. It feels a little sticky at first but it goes away. I apply in this order OSEA sea mineral mist toner to prep the skin, this serum and top off with Chanel La Solution 10 for sensitive skin.
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Reviewed in the United States on December 27, 2025
C
Verified Purchase
carolyn
Cuba, US
★★★★★ 5
Sensitive skin
Such a good product. I use after micro needling when skin is sensitive. Also a great product to use as a barrier serum when starting tretinoin cream.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
L
Verified Purchase
Lindsay
Louisville, US
★★★★★ 5
Saved my skin during an eczema flare up
This saved my skin! I had an eczema flare on my face, and my usual products weren’t working. A friend recommended the Avene brand and within 3 days of using this rescue barrier serum, my flare was almost completely gone! This saved my face!
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Reviewed in the United States on April 11, 2026
B
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B Helton
Lake Worth, US
★★★★★ 1
PLEASE REVIEW — FORMULA CHANGED!!!
I wish I would’ve posted a review PRIOR to the formula changing but just know that I LOVED this serum. I’ve struggled with hormonal acne (PCOS) and eczema for as long as I can remember. Finally, last summer my dermatologist put me on (3) different RX including Spironolactone and Accutane. I was so tired so I stopped everything except for CeraVe cleanser, retinol (Tretinoin) and CeraVe healing ointment. My made up skin routine was working until I used too much Tretinoin and burned my face. I had read great reviews about this product so I thought, I might as well try it — and IT WORKED! I’ve been using this product for almost a year and I loved it. However, 3 weeks ago when I ordered it, I noticed the bottle had a green tint. I could tell after one use that the feel of the serum was different, more watery, not as thick as it used to be. The smell was also different. Still, I kept using it for nearly 2 weeks and I experienced 2 breakouts! Sure enough, I stopped the product and within a few days, my skin was back to normal. I am very upset because as someone who has extremely sensitive skin, this worked but unfortunately, the new formula isn’t for me.
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Reviewed in the United States on May 14, 2026

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