







Owens Corning FOAMULAR 250 R-4 XPS Foam Board Insulation, 3/4 in. x 4 ft. x 8 ft., Tongue & Groove Edge (25 psi)
FOAMULAR 250 R-4 XPS Tongue & Groove Foam Board, 3/4 in. x 4 ft. x 8 ft.
Rigid XPS foam board insulation engineered for exterior sheathing and tough jobsite conditions. The FOAMULAR 250 delivers 25 psi compressive strength, moisture resistance, and easy score-and-snap installation with tongue & groove edges.
Key Features:
- Durable XPS Board: 25 psi compressive strength for exterior sheathing and heavy-duty use
- Energy Efficiency: R-4 thermal resistance in a 3/4 in. profile helps reduce heat loss
- Moisture Resistant: Retains R-value even after exposure to water; GREENGUARD certified for low emissions
- Easy to Work With: Lightweight, scores and snaps cleanly—no special tools needed
- Tongue & Groove Edge: Panels interlock for a tight fit and reduced air gaps
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Foam Board Insulation (XPS) |
| Compressive Strength | 25 psi (FOAMULAR 250) |
| Insulation R-Value | R-4 |
| Thickness | 0.75 in (3/4 in.) |
| Width | 48 in (4 ft) |
| Length | 8 ft |
| Edge Profile | Tongue & Groove |
| Faced or Unfaced | Unfaced |
| Compatible Install Surface | Concrete, Wood |
| Interior/Exterior | Exterior |
| Coverage Area | 32 sq ft per board |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Product Weight | 3.9 lb |
| Sheathing Type | XPS |
| Warranty | Limited Lifetime |
| Features | Formaldehyde Free; Moisture resistant; GREENGUARD Certified; Contains minimum 20% recycled content (SCS certified) |
Frequently Asked Questions (FAQ):
Q: Can this board be used on concrete or wood surfaces?
A: Yes—compatible with concrete and wood install surfaces.
Q: Is the insulation faced?
A: No, it is unfaced XPS foam board.
Q: What are the panel dimensions and coverage?
A: Each panel is 3/4 in. thick, 4 ft. wide, and 8 ft. long, covering 32 sq. ft.
Q: What is the R-value of this thickness?
A: R-4 for the 3/4 in. thickness.
Q: Does it carry a warranty?
A: Yes, Limited Lifetime warranty; see manufacturer details.
Sleek, Seamless Insulation with Serious Performance
FOAMULAR 250’s crisp pink panels create a clean, continuous thermal envelope that elevates any build from the bones up. The tongue-and-groove edge is a standout, locking boards together for a polished, gap-free plane. Use it behind siding or stucco to sharpen lines and boost comfort without bulk. It’s a quiet essential for luxurious, energy-savvy living.
Upgrade your envelope with FOAMULAR 250 R-4 XPS—order today for a tighter, more efficient build.
Original: $20.45
-70%$20.45
$6.13Product Information
Product Information
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Description
FOAMULAR 250 R-4 XPS Tongue & Groove Foam Board, 3/4 in. x 4 ft. x 8 ft.
Rigid XPS foam board insulation engineered for exterior sheathing and tough jobsite conditions. The FOAMULAR 250 delivers 25 psi compressive strength, moisture resistance, and easy score-and-snap installation with tongue & groove edges.
Key Features:
- Durable XPS Board: 25 psi compressive strength for exterior sheathing and heavy-duty use
- Energy Efficiency: R-4 thermal resistance in a 3/4 in. profile helps reduce heat loss
- Moisture Resistant: Retains R-value even after exposure to water; GREENGUARD certified for low emissions
- Easy to Work With: Lightweight, scores and snaps cleanly—no special tools needed
- Tongue & Groove Edge: Panels interlock for a tight fit and reduced air gaps
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Foam Board Insulation (XPS) |
| Compressive Strength | 25 psi (FOAMULAR 250) |
| Insulation R-Value | R-4 |
| Thickness | 0.75 in (3/4 in.) |
| Width | 48 in (4 ft) |
| Length | 8 ft |
| Edge Profile | Tongue & Groove |
| Faced or Unfaced | Unfaced |
| Compatible Install Surface | Concrete, Wood |
| Interior/Exterior | Exterior |
| Coverage Area | 32 sq ft per board |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Product Weight | 3.9 lb |
| Sheathing Type | XPS |
| Warranty | Limited Lifetime |
| Features | Formaldehyde Free; Moisture resistant; GREENGUARD Certified; Contains minimum 20% recycled content (SCS certified) |
Frequently Asked Questions (FAQ):
Q: Can this board be used on concrete or wood surfaces?
A: Yes—compatible with concrete and wood install surfaces.
Q: Is the insulation faced?
A: No, it is unfaced XPS foam board.
Q: What are the panel dimensions and coverage?
A: Each panel is 3/4 in. thick, 4 ft. wide, and 8 ft. long, covering 32 sq. ft.
Q: What is the R-value of this thickness?
A: R-4 for the 3/4 in. thickness.
Q: Does it carry a warranty?
A: Yes, Limited Lifetime warranty; see manufacturer details.
Sleek, Seamless Insulation with Serious Performance
FOAMULAR 250’s crisp pink panels create a clean, continuous thermal envelope that elevates any build from the bones up. The tongue-and-groove edge is a standout, locking boards together for a polished, gap-free plane. Use it behind siding or stucco to sharpen lines and boost comfort without bulk. It’s a quiet essential for luxurious, energy-savvy living.
Upgrade your envelope with FOAMULAR 250 R-4 XPS—order today for a tighter, more efficient build.






















