SKU: 4660028124

Owens Corning FOAMULAR 250 (25 PSI) R-15 XPS Foam Board Insulation, 3 in. x 4 ft. x 8 ft., Square Edge

Sale price$116.89 Regular price$129.88
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

Owens Corning FOAMULAR 250 (25 PSI) R-15 XPS Foam Board Insulation, 3 in. x 4 ft. x 8 ft., Square EdgeFOAMULAR 250 R 15 XPS Foam Board, 3" x 4' x 8' Rigid extruded polystyrene (XPS) foam board with 25 PSI compressive strength delivers R 15 thermal performance in a 3 inch panel. Durable, moisture resistant board for foundations, sheathing, under slab and cavity walls; easy to score, snap, and install. Key Features: High R Value: R 15 at 3 inches for strong thermal resistance Durable Strength: 25 PSI compressive strength handles jobsite loads Moisture

FOAMULAR 250 R-15 XPS Foam Board, 3" x 4' x 8'

Rigid extruded polystyrene (XPS) foam board with 25 PSI compressive strength delivers R-15 thermal performance in a 3-inch panel. Durable, moisture-resistant board for foundations, sheathing, under-slab and cavity walls; easy to score, snap, and install.


Key Features:

  • High R-Value: R-15 at 3 inches for strong thermal resistance
  • Durable Strength: 25 PSI compressive strength handles jobsite loads
  • Moisture Resistant: XPS core resists water absorption to retain R-value
  • Easy to Work With: Lightweight panels score and snap cleanly; no special tools needed
  • Versatile Use: Suitable for exterior/interior foundation walls, sheathing, under slab, and cavity walls
  • *Special order item

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type XPS (Extruded Polystyrene) Rigid Foam Board
Compressive Strength 25 PSI
R-Value R-15
Thickness 3 in
Width 48 in
Length 96 in (8 ft)
Coverage Area 32 sq ft per board
Edges Square Edge; scored
Faced or Unfaced Unfaced
Compatible Install Surface Concrete, Plywood, Wood
Interior/Exterior Interior/Exterior
Insulation Features Formaldehyde Free, Moisture Retardant, Mold Resistant, Water Resistant
Number of Pieces 1
Pack Size 1
Warranty Limited Lifetime

Frequently Asked Questions (FAQ):

Q: Can this be used below grade or under a slab?
A: Yes—FOAMULAR 250 XPS is rated for below-grade applications including exterior foundation walls and under-slab use.


Q: Is the board faced or unfaced?
A: Unfaced XPS; a separate thermal barrier like drywall is required when left exposed indoors.


Q: What are the panel dimensions and coverage?
A: Each panel measures 3 in. thick x 48 in. wide x 96 in. long and covers 32 sq. ft.


Q: What tools are needed to cut it?
A: Score with a utility knife and snap; no special tools required.


Q: Is it mold or moisture resistant?
A: Yes—XPS resists moisture absorption and is mold resistant, helping maintain thermal performance.


Sculpted Thermal Armor for Modern Envelopes

This crisp, pink XPS panel brings a tailored precision to walls and foundations, creating a seamless thermal envelope that feels intentional and refined. The standout is its confident 3-inch profile—R-15 performance with a sleek, square edge that lines up beautifully. Pair it with clean-detailed cladding and polished concrete for a minimalist, high-performance shell. It’s an essential layer of quiet luxury, where form meets formidable function.


Upgrade your envelope with FOAMULAR 250 and lock in durable, R‑15 performance—add to cart and start insulating today.

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: 4660028124

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Crystal
Lexington, US
★★★★★ 5
Exactly what I needed for my bathroom refresh.
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 2, Size: 22.5inches, Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 2, Size: 22.5inches
I bought these floating shelves in the color Rustic Brown to replace a bulky storage shelf that was making my bathroom feel cramped, and they completely transformed the space. The wood finish looks much more expensive than I expected, and once installed they gave the bathroom a clean, modern, spa-like feel without taking up visual space. Installation was straightforward overall. I mounted one screw in the center into a stud and used drywall anchors for the remaining hardware, and the shelves feel very sturdy. They sit flush against the wall and don’t sag or wobble. I especially love how slim they are while still being deep enough to hold everyday bathroom items, decor, candles, skincare, and small baskets. The color worked perfectly with my bathroom vanity and mirror trim, and the floating design instantly made the room look more organized and intentional. Huge upgrade for a small space. Definitely recommend if you want functional storage that also looks elevated and minimalist.
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Amazon Customer
New York, US
★★★★★ 4
Good Shelves
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 3, Size: 22.5inches
These shelves are really nice quality and look as advertised. The hardware included was great quality, metal drywall anchors and good screws. They were easy to install, and make even/level with each other. My only gripe is the price, but I'm very satisfied with the product overall.
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Reviewed in the United States on April 12, 2026
P
Verified Purchase
Patricia G.
Bozeman, US
★★★★★ 5
Attractive, easy to install, nicely equipped hardware package.
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 2, Size: 22.5inches
These are pretty doggone nice shelves and I appreciate the fact that they are not made of solid particle board. Yes they are made of an engineered product, but they are lightweight and strong…and look better than particle board products and more costly than their actual price. Easy installation system with the bracket…not fussy like some are. An especially thoughtful touch is the variety of hardware that is included. Also a tiny level for use when installing them. What? …So they can be installed correctly? I was pleasantly surprised by this inclusion.
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Reviewed in the United States on May 29, 2026
S
Verified Purchase
Sara
Lexington, US
★★★★★ 5
Beautiful shelves
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 2, Size: 22.5inches
Great quality shelves, have them in 4 rooms, they are easy to hang up and lightweight, look really nice and keeps room looking organized and clean.
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Reviewed in the United States on May 24, 2026
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Kristal S.
Lake Worth, US
★★★★★ 5
Perfect for a coffee bar
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 3, Size: 15.7inches, Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 3, Size: 15.7inches
These are great for my coffee bar! These shelves are easy to install and came with all the hardware needed. What a great value for your money, especially when you get 3 of these cute shelves. I love how they help organize my coffee bar area and the size fits perfectly.
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Reviewed in the United States on May 26, 2026

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