Owens Corning FOAMULAR 400 R-10 XPS Foam Board Insulation, 2 in x 4 ft x 8 ft, Square Edge (40 psi)
FOAMULAR 400 R-10 XPS Foam Board, 2" x 4' x 8'
High-performance extruded polystyrene (XPS) insulation board with 40 psi compressive strength for heavy-load applications. Offers R-10 thermal resistance at 2-inch thickness and square edges for flush installs.
Key Features:
- High Compressive Strength: 40 psi for under-slab, foundation, and commercial roof applications
- Energy Efficient: R-10 thermal resistance at 2-inch thickness helps reduce heat loss
- Moisture Resistant: XPS core retains R-value even in wet conditions
- Easy to Work With: Lightweight panels score, snap, and cut cleanly without special tools
- Sustainable NGX Formulation: Blowing agent designed to significantly reduce global warming potential
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | XPS Rigid Foam Board |
| Compressive Strength | 40 psi (FOAMULAR 400) |
| R-Value | R-10 |
| Thickness | 2 in |
| Width | 48 in |
| Length | 8 ft |
| Coverage Area | 32 sq ft per board |
| Compatible Install Surface | Concrete, Plywood, Wood |
| Faced or Unfaced | Unfaced |
| Insulation Location | Exterior sheathing, exterior wall foundation, under slab |
| Interior/Exterior | Exterior (must be covered if used indoors) |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Product Weight | 10 lb |
| Warranty | Limited Lifetime |
| Features | Formaldehyde-free; Moisture retardant; Mold resistant; Water resistant |
| Edge Type | Square Edge |
| Material | Extruded Polystyrene (XPS) |
Frequently Asked Questions (FAQ):
Q: Can this board be used below grade or under slabs?
A: Yes—commonly used for exterior foundation walls and under-slab applications due to its 40 psi compressive strength and moisture resistance.
Q: Does it need to be covered indoors?
A: Yes—XPS foam cannot be left exposed and must be covered by a 15-minute thermal barrier such as drywall when used indoors.
Q: What surfaces is it compatible with?
A: Concrete, wood, and plywood.
Q: Is the board faced or unfaced?
A: Unfaced.
Q: What are the panel dimensions and coverage?
A: Each board is 2 in thick, 48 in wide, and 8 ft long, covering 32 sq ft.
Sculpted Strength, Modern Warmth
This XPS board brings precision and pink-hued confidence to high-performance builds. Its crisp square edge and slim 2-inch profile glide into tight assemblies, delivering steadfast insulation without bulk. Use it to create a clean, continuous thermal layer behind cladding or beneath polished concrete for a seamless envelope. It’s a quiet essential—powerfully functional and undeniably refined.
Upgrade your envelope with FOAMULAR 400 and lock in durable, R-10 energy savings for your next project.
Original: $68.51
-70%$68.51
$20.55Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
FOAMULAR 400 R-10 XPS Foam Board, 2" x 4' x 8'
High-performance extruded polystyrene (XPS) insulation board with 40 psi compressive strength for heavy-load applications. Offers R-10 thermal resistance at 2-inch thickness and square edges for flush installs.
Key Features:
- High Compressive Strength: 40 psi for under-slab, foundation, and commercial roof applications
- Energy Efficient: R-10 thermal resistance at 2-inch thickness helps reduce heat loss
- Moisture Resistant: XPS core retains R-value even in wet conditions
- Easy to Work With: Lightweight panels score, snap, and cut cleanly without special tools
- Sustainable NGX Formulation: Blowing agent designed to significantly reduce global warming potential
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | XPS Rigid Foam Board |
| Compressive Strength | 40 psi (FOAMULAR 400) |
| R-Value | R-10 |
| Thickness | 2 in |
| Width | 48 in |
| Length | 8 ft |
| Coverage Area | 32 sq ft per board |
| Compatible Install Surface | Concrete, Plywood, Wood |
| Faced or Unfaced | Unfaced |
| Insulation Location | Exterior sheathing, exterior wall foundation, under slab |
| Interior/Exterior | Exterior (must be covered if used indoors) |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Product Weight | 10 lb |
| Warranty | Limited Lifetime |
| Features | Formaldehyde-free; Moisture retardant; Mold resistant; Water resistant |
| Edge Type | Square Edge |
| Material | Extruded Polystyrene (XPS) |
Frequently Asked Questions (FAQ):
Q: Can this board be used below grade or under slabs?
A: Yes—commonly used for exterior foundation walls and under-slab applications due to its 40 psi compressive strength and moisture resistance.
Q: Does it need to be covered indoors?
A: Yes—XPS foam cannot be left exposed and must be covered by a 15-minute thermal barrier such as drywall when used indoors.
Q: What surfaces is it compatible with?
A: Concrete, wood, and plywood.
Q: Is the board faced or unfaced?
A: Unfaced.
Q: What are the panel dimensions and coverage?
A: Each board is 2 in thick, 48 in wide, and 8 ft long, covering 32 sq ft.
Sculpted Strength, Modern Warmth
This XPS board brings precision and pink-hued confidence to high-performance builds. Its crisp square edge and slim 2-inch profile glide into tight assemblies, delivering steadfast insulation without bulk. Use it to create a clean, continuous thermal layer behind cladding or beneath polished concrete for a seamless envelope. It’s a quiet essential—powerfully functional and undeniably refined.
Upgrade your envelope with FOAMULAR 400 and lock in durable, R-10 energy savings for your next project.
