







Owens Corning R-10 (25 PSI) FOAMULAR 250 Extruded Polystyrene Foam Board Insulation, 2 in. x 4 ft. x 8 ft., Square Edge
FOAMULAR 250 XPS Foam Board Insulation, R-10, 2x4x8
Durable FOAMULAR 250 XPS board delivers R-10 thermal performance with 25 PSI compressive strength for exterior sheathing, foundations, and under-slab applications. The 2 in. thick, 4 ft. x 8 ft. panel resists moisture, is easy to score and snap, and installs cleanly for long-lasting energy savings.
Key Features:
- High Thermal Performance: R-10 insulation value with XPS technology for energy efficiency
- Strong & Durable: 25 PSI compressive strength suitable for walls, foundations, and under-slab use
- Moisture Resistant: Non-wicking XPS helps retain R-value even in wet conditions
- Easy to Work With: Boards score, cut, and snap cleanly for fast installation
- Square Edge Panel: 2 in. thick, 4 ft. x 8 ft. sheet provides 32 sq. ft. of coverage
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Extruded Polystyrene (XPS) Foam Board |
| Model/SKU | 52DD |
| Compressive Strength | 25 PSI |
| Insulation R-Value | R-10 |
| Faced or Unfaced | Unfaced |
| Interior/Exterior | Exterior |
| Insulation Location | Exterior sheathing, exterior wall foundation, under slab |
| Compatible Install Surface | Plywood |
| Insulation Features | Formaldehyde Free; Vapor Retardant |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Coverage Area | 32 sq. ft. |
| Product Length | 8 ft |
| Product Width | 48 in |
| Product Thickness | 2 in |
| Edge Type | Square Edge |
| Sheathing Type | XPS |
| Warranty | Lifetime Limited |
| Product Weight | 7.5 lb |
Frequently Asked Questions (FAQ):
Q: Can this be used below grade or under slabs?
A: Yes—FOAMULAR 250 is rated for exterior wall foundations and under-slab applications; verify local code requirements.
Q: Is the board faced or unfaced?
A: Unfaced XPS board.
Q: What are the panel dimensions and coverage?
A: 2 in. thickness, 48 in. width, 8 ft. length; covers 32 sq. ft. per sheet.
Q: Does it resist moisture?
A: Yes, XPS construction provides superior moisture resistance and helps maintain R-value.
Q: How is it cut and installed?
A: Score with a utility knife and snap to size; attach per manufacturer instructions using compatible adhesives/fasteners.
Sleek, High-Performance Insulation with Iconic Pink Style
FOAMULAR 250 brings a crisp, architectural polish to building envelopes while quietly elevating energy performance. Its slim 2-inch profile and square edges lay clean and true, creating seamless planes ready for finish materials. Pair it behind siding or under slab to craft spaces that feel composed, dry, and temperature-stable. This is the modern essential—smart, resilient insulation for luxurious comfort.
Upgrade your build with FOAMULAR 250 today for durable, moisture-resistant R-10 performance and lower energy costs.
Original: $59.73
-70%$59.73
$17.92Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
FOAMULAR 250 XPS Foam Board Insulation, R-10, 2x4x8
Durable FOAMULAR 250 XPS board delivers R-10 thermal performance with 25 PSI compressive strength for exterior sheathing, foundations, and under-slab applications. The 2 in. thick, 4 ft. x 8 ft. panel resists moisture, is easy to score and snap, and installs cleanly for long-lasting energy savings.
Key Features:
- High Thermal Performance: R-10 insulation value with XPS technology for energy efficiency
- Strong & Durable: 25 PSI compressive strength suitable for walls, foundations, and under-slab use
- Moisture Resistant: Non-wicking XPS helps retain R-value even in wet conditions
- Easy to Work With: Boards score, cut, and snap cleanly for fast installation
- Square Edge Panel: 2 in. thick, 4 ft. x 8 ft. sheet provides 32 sq. ft. of coverage
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Extruded Polystyrene (XPS) Foam Board |
| Model/SKU | 52DD |
| Compressive Strength | 25 PSI |
| Insulation R-Value | R-10 |
| Faced or Unfaced | Unfaced |
| Interior/Exterior | Exterior |
| Insulation Location | Exterior sheathing, exterior wall foundation, under slab |
| Compatible Install Surface | Plywood |
| Insulation Features | Formaldehyde Free; Vapor Retardant |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Coverage Area | 32 sq. ft. |
| Product Length | 8 ft |
| Product Width | 48 in |
| Product Thickness | 2 in |
| Edge Type | Square Edge |
| Sheathing Type | XPS |
| Warranty | Lifetime Limited |
| Product Weight | 7.5 lb |
Frequently Asked Questions (FAQ):
Q: Can this be used below grade or under slabs?
A: Yes—FOAMULAR 250 is rated for exterior wall foundations and under-slab applications; verify local code requirements.
Q: Is the board faced or unfaced?
A: Unfaced XPS board.
Q: What are the panel dimensions and coverage?
A: 2 in. thickness, 48 in. width, 8 ft. length; covers 32 sq. ft. per sheet.
Q: Does it resist moisture?
A: Yes, XPS construction provides superior moisture resistance and helps maintain R-value.
Q: How is it cut and installed?
A: Score with a utility knife and snap to size; attach per manufacturer instructions using compatible adhesives/fasteners.
Sleek, High-Performance Insulation with Iconic Pink Style
FOAMULAR 250 brings a crisp, architectural polish to building envelopes while quietly elevating energy performance. Its slim 2-inch profile and square edges lay clean and true, creating seamless planes ready for finish materials. Pair it behind siding or under slab to craft spaces that feel composed, dry, and temperature-stable. This is the modern essential—smart, resilient insulation for luxurious comfort.
Upgrade your build with FOAMULAR 250 today for durable, moisture-resistant R-10 performance and lower energy costs.






















