FOAMULAR® XPS is stronger and more flexible than EPS.
Resistant To Mold & Moisture
FOAMULAR® XPS has up to 13x better water resistance than EPS.
Easy To Cut, Form & Fit
FOAMULAR® XPS cuts cleaner and doesn't break apart or crumble like EPS.
Insulating Basement Walls
Without adequate insulation, it’s difficult to heat and air-condition a basement room effectively. Owens Corning® FOAMULAR® is the easy-to-install, efficient solution for insulating basement walls.
Insulating Crawlspace Walls
Because heat m.igrates to cold through the bottom of the house, an uninsulated crawlspace means you’ll use more energy to heat your home during winter and to cool it in summer. Insulate your crawlspace with Owens Corning® FOAMULAR®.
Insulating Garage Or Bonus Room
Use Owens Corning® FOAMULAR® to insulate your garage ceiling / bonus room floor to effectively condition the space.
Insulating Exterior Facing Wall Cavity
Owens Corning® FOAMULAR® provides a higher R-value per inch than other materials commonly used for wall cavity insulation.
Warranty
Warranted to retain at least 90% of its advertised R-value over the lifetime of the product - Industry leading warranty across all thicknesses and compressive strengths.
R-Value
The R-value for insulation measures how well insulation materials can resist heat - the higher the R-value, the greater the insulation performance. FOAMULAR is best  at maintaining R-value where moisture is present.
Third Party Certifications
FOAMULAR is certified for Recycled Content and Air Quality by esteemed third party organizations.
Make More Possible
Owens Corning is a global leader in engineered materials for roofing, insulation and composites.
World Class Sustainability
For us, sustainability is about meeting the needs of the present while leaving the world a better place for the future.
OC Gives Back
We make a difference by empowering people and the communities in which we live and work.
FORMULAR insulation Project Panels has a variety of uses. You can add thermal insulation to attic and crawl space access panels and pet houses. or protect items that you are transporting. They can also be used for art projects, model train layouts and displays.
Solvent-free latex paint and solvent-free adhesive are recommended
Made with 20% recycled content
R-value of 5 per in
Use formular insulation 2 ft. x 2 ft. Project Panels for small projects
Formular 150 and 250 are available in various thicknesses and R-values, the difference is the compressive strength, formular 150 has a compressive strength of 15 psi and formular 250 is 25 psi
When using formular or any low perm insulation, always verify the moisture vapor flow and dew point characteristics of the wall system, please check your local building codes for vapor retarder/barrier information
Being used in an interior construction application, painting the formular is not recommended as formular cannot be left exposed and will need to be covered by a 15-minute thermal barrier such as drywall
Being used for crafts, acrylic or latex based paints can be used with formular products
FORMULAR is available in 2 edge configurations
Square edge - designed to fit flush next to adjoining boards
Q:Can this be used on the outside of block wall to help insulate areas where my water pipes run?
by|Sep 30, 2023
1 Answer
Answer This Question
A:Â Hello Uncle, Owens Corning Foamular can be used on the exterior of a block wall. Please note the Foamular cannot be left exposed to UV rays as it will slowly degrade over time. It will need to be covered to be protected from the UV rays. Thank you for your inquiry!
by|Oct 2, 2023
Q:Can this be used to insulate exposed HVAC ducts in a garage?
by|Aug 30, 2023
1 Answer
Answer This Question
A:Â Hello Dylan, Owens Corning Foamular is a combustible product and must be covered by a 15 minute thermal barrier such as 1/2" drywall. Thank you for your inquiry!
by|Sep 1, 2023
Q:Can a person use this for the wall under sink cabinet?
by|Aug 21, 2023
1 Answer
Answer This Question
A:Â Hello RJean, Owens Corning Project Panels can be used for wall insulation. However, the product is combustible and must be covered by a 15 minute thermal barrier such as 1/2" drywall. Thank you for your inquiry!
by|Aug 22, 2023
Q:I currently have no insulation on my attic floor. Can I lay these foam boards down on my attic floor for insulation?
by|Jul 5, 2023
1 Answer
Answer This Question
A:Â Hello Robert, Owens Corning Foamular is combustible and cannot be left exposed in most attic applications. They need to be covered by a 15-minute thermal barrier such as 1/2" drywall. Thank you for your inquiry!
by|Jul 6, 2023
Showing 1-4 of 118
Customer Reviews
4.8 out of 5
(521)
4.8
out of 521 reviews
93% recommend this product
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Showing 1-10 of 521 reviews
Sep 7, 2023
The project panel foam board was exactly what I needed for the project I had and was easier to handle over the 4'x8' sheets.
by
Verified Purchase
Jan 18, 2023
Bought this to insulate a cavity housing a water pipe...
Bought this to insulate a cavity housing a water pipe in the garage. No R rating value listed or printed on panel. Easy to score or cut with utility blade. Wish it had a foil side for fire resistance.
by
Verified Purchase
Feb 9, 2022
Great product for tight spaces!
I bought this to fit into a tight crawl space opening..it was easy to cut to size and put it in place. I placed some caulking around the edges and when I checked back 24 hours later, the ambient temperature was 20° warmer then the day before! This will definitely save me quite a bit in heating costs in the years to come...
by
Verified Purchase
Recommended
Feb 1, 2022
Great for Arts and Crafts!
Fantastic product, great for arts and crafts more so even than construction. It is the most commonly used product by action figure diorama artists.
by
Verified Purchase
Recommended
4 found this review helpful
Dec 17, 2020
fireplace draft
i taped pieces together and placed in front of fireplace doors. i also placed rug on tile in front of fireplace. first time we do not feel draft.
by
Recommended
2 found this review helpful
Nov 11, 2020
Used this to make a covering for a window air conditioner. Worked very well.
Used this to make a covering for a window air conditioner. Worked very well.
by
Verified Purchase
Recommended
1 found this review helpful
Oct 24, 2020
Great sturdy foam
I needed a bigger piece of foam for a winter arrangement project I was doing. It worked out great. Held the weight of everything great
by
Recommended
Aug 14, 2020
These worked perfectly for my project. I was looking for solid foam board to make a floating raft...
These worked perfectly for my project. I was looking for solid foam board to make a floating raft for my hydroponics system. It was easy to cut and floats very well.
by
Verified Purchase
Recommended
1 found this review helpful
Jul 30, 2020
Great for insulating window air conditioners
I came across this material after doing some research on YouTube to better improve insulation around the window A/C units. My summer electric bills were three, almost four times what they were in the fall and winter months because of the brutal heat. After evaluating several Home Depot products, this seemed to be the most economical since I would not need to replace them every summer when its time to put the A/C back in the windows.
I was able to get by with one sheet for three windows which made me extremely happy and better yet, the next day with 92F outside, my home remained a cool mid 60s temperature inside. It did a fantastic job of keeping the heat out and keeping the cold air in.
They were also very easy to cut to the exact dimensions I needed. A ruler, a pencil and a carpenters knife. I made the portions 1/4 of an inch wider than I needed and squeeze in the small cut out of foamular to make an airtight fit. I did not even need tape to hold them in place. The tension between the A/C and the window frame held them in place.
When the fall arrives and its time to remove the A/C units, I will label the cutouts to match them with the A/C so that next year I will know how to install them correctly.
I love that they resist moisture, mold, and mildew. They are very economical and they kept my home much cooler. I set my A/C unit thermostats at 68 and they cycle on and off when needed. Mostly off at night because the foamular maintains the coolness in the evenings. Great product.
by
Recommended
7 found this review helpful
Jul 30, 2020
Foam is good quality, no marks. I cut it...
Foam is good quality, no marks. I cut it for projects using a DIY nichrome wire (12-16V) set-up to make lab supplies, like test tube holders for high school chemistry.
FOAMULAR NGX 1 in. x 2 ft. x 2 ft. R-5 Project Panel XPS Rigid Foam Board Insulation
FOAMULAR Extruded Polystyrene (XPS) RigidFOAMULAR Extruded Polystyrene (XPS) Rigid Foam Insulation offers a comprehensive product line of insulation boards in a wide choice of sizes, thicknesses and edges with a Lifetime Limited Warranty for the life of the home or building. Foam insulation boards are easy to handle, score, cut and install & no special tools are needed. Rigid foam insulation products can be used on wood, steel framing or concrete walls. FOAMULAR XPS resists moisture and retains R-value even after exposure to standing water and wet soil. Only XPS foam to be GREENGUARD Gold Certified and the first XPS foam certified by Scientific Certification Systems (SCS) to contain a minimum of 20 % recycled content.View Full Product Description
3/4 in. x 1.25 ft. x 4 ft. R-2.65 Polystyrene Panel Insulation Sheathing (6-Pack)
Provide your home with effective insulationProvide your home with effective insulation with the Cellofoam 3/4 in. x 14-1/2 in. x 4 ft. Polystyrene Foam Insulation Board. Ideal for both interior and exterior use. This durable insulation features a flame retardant additive for additional safety.View Full Product Description