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
Save 10%

Pay in installments of $32.47 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 27 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Beautiful shoe but too narrow
Size: 10 Wide, Color: Navy Grainy Leather
Too narrow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
T
Verified Purchase
Tim Arnette
Cuba, US
★★★★★ 5
Looks good feels good
Size: 13 Wide, Color: Black
I've had them 2 weeks and love them. Took a little breaking in but they feel great now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
E
Verified Purchase
Elizabeth Henderson
Birmingham, US
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
M
Verified Purchase
Mynx
Belleville, US
★★★★★ 5
Comfortable Shoes Right Out of the Box
Size: 9, Color: Black
I bought these shoes for my husband. He has a very hard time finding quality, comfortable shoes. These shoes are just as comfortable as his New Balance. He uses them as a dress shoe and wears them at least once a week. There was no break in period necessary. They were comfortable right out of the box! The only thing we didn't like was the white sole color. Once I knew he was going to keep them, I used a black sharpie marker to color the soles black. Instant amazing, comfortable dress shoes. They were well worth the cost. If you or your SO needs a comfortable pair of shoes, we highly recommend them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2025
R
Verified Purchase
Rmanuel
Boise, US
★★★★★ 1
Paid for new, received used.
Size: 9.5 Wide, Color: Cognac, Size: 9.5 Wide, Color: Cognac
Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026

recommand products