SKU: 12855054475

Owens Corning FOAMULAR 250 (25 psi) R-12.5 XPS Foam Board Insulation, 2-1/2 in. x 4 ft. x 8 ft., Scored Square Edge

Sale price$59.04 Regular price$65.60
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Description

Owens Corning FOAMULAR 250 (25 psi) R-12.5 XPS Foam Board Insulation, 2-1/2 in. x 4 ft. x 8 ft., Scored Square EdgeFOAMULAR 250 R 12. 5 XPS Foam Board, 2 1 2 in. x 4 ft. x 8 ft. Rigid extruded polystyrene (XPS) insulation board delivering 25 psi compressive strength and R 12. 5 thermal performance at 2 1 2 in. thickness. Scored square edges snap cleanly for fast sizing; ideal for exterior sheathing, foundations, and under slab applications. Key Features: High R Value per Inch: R 12. 5 at 2 1 2 in. thickness for strong thermal resistance Durable Strength: 25 psi

FOAMULAR 250 R-12.5 XPS Foam Board, 2-1/2 in. x 4 ft. x 8 ft.

Rigid extruded polystyrene (XPS) insulation board delivering 25 psi compressive strength and R-12.5 thermal performance at 2-1/2 in. thickness. Scored square edges snap cleanly for fast sizing; ideal for exterior sheathing, foundations, and under slab applications.


Key Features:

  • High R-Value per Inch: R-12.5 at 2-1/2 in. thickness for strong thermal resistance
  • Durable Strength: 25 psi compressive strength stands up to jobsite and backfill loads
  • Moisture Resistant: XPS resists water absorption to help maintain R-value
  • Easy to Size: Factory-scored square edge breaks into 24 in. or 16 in. widths for quick installs
  • Versatile Applications: Use on walls, exterior sheathing, and under slab areas

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Extruded Polystyrene (XPS) Rigid Foam Board
Compressive Strength 25 psi
R-Value R-12.5 (at 2-1/2 in. thickness)
Thickness 2-1/2 in.
Width 4 ft
Length 8 ft
Edge Profile Scored Square Edge
Faced or Unfaced Unfaced
Number of Pieces 1
Coverage Area 32 sq. ft. per board
Moisture Resistance Low water absorption; retains R-value
Applications Exterior sheathing, cavity walls, foundation/exterior wall, under slab, attics/garages
Certifications GREENGUARD certified (low chemical emissions) per referenced materials
Warranty Lifetime Limited (see manufacturer for details)

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and R-value?
A: Each board measures 2-1/2 in. thick by 4 ft. wide by 8 ft. long and provides R-12.5.


Q: Can I cut the board to fit studs?
A: Yes. The scored square edges allow snapping into 24-in. or 16-in.-wide pieces; it can also be easily scored and cut with a utility knife.


Q: Where can this insulation be used?
A: Suitable for exterior sheathing, cavity walls, foundation/exterior wall, and under slab applications.


Q: Is it faced or unfaced?
A: Unfaced XPS rigid foam.


Q: Does it resist moisture?
A: Yes, XPS has low water absorption to help retain thermal performance.


Sculpted Pink Performance for Modern Envelopes

This FOAMULAR panel is a crisp, architectural layer that streamlines the building envelope with a chic pink edge. Its scored profile is the standout—snap it into elegant, perfectly proportioned modules for bays and panels. Pair it with clean plywood sheathing and matte black cladding for a tailored, high-performance facade. It’s the quiet luxury of comfort—discreet, durable, and decidedly refined.


Upgrade your envelope with FOAMULAR 250 today for faster installs, lasting R‑value, and dependable moisture resistance.

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: 12855054475

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L. Casillas
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★★★★★ 5
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Color: Upgrade-black, Size: 15.6 Inch
Stylish and lightweight for travel and work. Sturdy, comfortable straps. After trying about 5 different backpacks, I’m keeping this one.
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Reviewed in the United States on May 25, 2026
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Kana M. Golic
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★★★★★ 5
Stylish, light (laptop, phone, notebook & pen) +
Color: Upgrade-apricot, Size: 15.6 Inch, Color: Upgrade-apricot, Size: 15.6 Inch
Perfect for work! I use it for laptop, charger and few items necessary at work. I have a few blocks to walk from parking to work location and this bag has replaced last backpack and purse. Much easier to carry one item than two or more. Plus, it has enough room if you need to use it for clothes and toiletries (road-trip) or carry-on.
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Reviewed in the United States on February 12, 2026
B
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Brigs
Fort Morgan, US
★★★★★ 4
Good quality
Color: Regular-light Pink, Size: 14 Inch
Good quality and value for your money. The fabric is soft and the right storage capacity for my 14” laptop!
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Reviewed in the United States on March 13, 2026
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Carol
Houston, US
★★★★★ 5
Great value
Color: Upgrade-champagne Brown, Size: 17.3 Inch
Perfect backpack for traveling. Love how it looks, the compartments are great. Easy to store for your next travels.
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Reviewed in the United States on March 8, 2026
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UserB
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★★★★★ 3
Size up
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Reviewed in the United States on May 7, 2026

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