Name: Owens Corning FOAMULAR 250 XPS Insulation Board - All Sizes
Brand: Roofing4US
SKU: OWCFOAM2503/4In
Price: 35.38 USD
Availability: InStock

Owens Corning FOAMULAR 250 XPS Insulation Board - All Sizes by MyHackerTech

$35.38

Quantity

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Owens Corning FOAMULAR 250 XPS insulation board is a closed-cell, moisture-resistant rigid foam solution built to handle a wide range of building needs. If you want reliable, long-lasting warmth with less moisture drama, this is your go-to board for projects from walls to slabs.

Key Features & Design

Material: Extruded Polystyrene (XPS) insulation with a closed-cell structure for outstanding moisture resistance and durability.

R-Value by Thickness: ¾" — R4; 1" — R5; 1½" — R7.5; 2" — R10; 2½" — R12.5; 3" — R15; 4" — R20.

Performance: Excellent long-term stable insulating performance at R-5 per inch; exceptional moisture resistance and durability for below-grade and above-grade applications.

Ease of Use: Lightweight, easy to handle, and simple to cut or score for clean, snug joints (scored square edge).

Applications: Slows transmission of water vapor in masonry walls; provides continuous insulation over wood or steel stud framing, insulated concrete sandwich panel walls, masonry cavity walls, or when used with non-penetrating surface-mounted furring systems. Ideal for below-grade perimeter and foundation projects or directly beneath concrete slabs.

Durability & Weather Barrier: FOAMULAR 250 XPS insulation is resistant to soil components and retains insulating properties even after prolonged exposure to moisture, offering a weather-resistant barrier when joints are sealed.

Coverage: 32 Sq Ft per board across thicknesses (size varies by thickness).

Technical Details

Dimensions / Thickness Options: ¾", 1", 1½", 2", 2½", 3", 4"

R-Value (75°F mean): ¾" — 4.0; 1" — 5.0; 1½" — 7.5; 2" — 10; 2½" — 12.5; 3" — 15; 4" — 20

LTTR (75°F mean): 1" — 5.0; 1½" — 7.8; 2" — 10.6; 2½" — 13.4; 3" — 16.2; 4" — 22.0

Compressive Strength: 25 psi (172 kPa)

Flexural Strength: 75 psi (517 kPa)

Water Absorption: Maximum 0.10% by volume

Edge: Scored Square Edge

Note: We cannot ship FOAMULAR 250 XPS insulation to the following states: California, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont, Virginia, and Washington.

Thickness Sq Ft Per Board R-Value

3/4" 32 Sq Ft R4

1" 32 Sq Ft R5

1.5" 32 Sq Ft R7.5

2" 32 Sq Ft R10

2.5" 32 Sq Ft R12.5

3" 32 Sq Ft R15

4" 32 Sq Ft R20

Property Test Method2 Value

Thermal Resistance3, R-Value (180 days) minimum,
hr·ft2·°F/Btu (RSI, °C·m2/W)
@ 75°F (24°C) mean temperature ASTM C518

¾" Thickness 4.0 (0.70)

1" Thickness 5.0 (0.88)

1½" Thickness 7.5 (1.32)

2" Thickness 10 (1.76)

2½" Thickness 12.5 (2.20)

3" Thickness 15 (2.64)

4" Thickness 20 (3.52)

@ 40°F (4.4°C) mean temperature

¾" Thickness 4.3 (0.76)

1" Thickness 5.4 (0.95)

1½" Thickness 8.1 (1.43)

2" Thickness 10.8 (1.90)

2½" Thickness 13.5 (2.38)

3" Thickness 16.2 (2.85)

4" Thickness 21.6 (3.80)

Long Term Thermal Resistance, LTTR-Value3, minimum
hr·ft2·°F/Btu (RSI, °C·2/W)
@ 75°F (24°C) mean temperature CAN/ULC S770-03

¾" Thickness N/A

1" Thickness 5.0 (0.88)

1½" Thickness 7.8 (1.37)

2" Thickness 10.6 (1.87)

2½" Thickness 13.4 (2.36)

3" Thickness 16.2 (2.85)

4" Thickness 22.0 (3.87)

Compressive Strength, minimum psi (kPa) ASTM D1621 25 (172)

Flexural Strength, minimum psi (kPa) ASTM C203 75 (517)

Water Absorption, maximum % by volume ASTM C272 0.10

Water Vapor Permeance, maximum perm (ng/Pa·s·m2) ASTM E96 1.5 (86)

Dimensional Stability, maximum % linear change ASTM D2126 2.0

Flame Spread ASTM E84 5

Smoke Developed ASTM E84 45-175

Oxygen Index, minimum % by volume ASTM D2863 24

Service Temperature, maximum °F (°C) 165 (74)

Linear Coefficient of Thermal Expansion, in/in/°F (m/m°C) ASTM E228 3.5 x 10-5 (6.3 x 10-5)

Manufacturer:
MHTDEV LLC,
Address:
930 South 4th Street,
Las Vegas Nevada 89101, United States
Email:sales@myhackertech.com

Responsible person in the EU
Name: SINDEN VENTURES LIMITED
Address: Markou Evgenikou 11, Mesa Geitonia 4002 Limassol Cyprus
Email: gpsr@sindenventures.com
This product is made for adults.
Meets the flammability, lead, cadmium, bisphenols and phthalates level requirements.
2 year warranty in EEA and UK, established by Directive 1999/44/EC.
MHTDEV LLC,
Address:
930 South 4th Street,
Las Vegas Nevada 89101, United States
Email:sales@myhackertech.com

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Thickness	Sq Ft Per Board	R-Value
3/4"	32 Sq Ft	R4
1"	32 Sq Ft	R5
1.5"	32 Sq Ft	R7.5
2"	32 Sq Ft	R10
2.5"	32 Sq Ft	R12.5
3"	32 Sq Ft	R15
4"	32 Sq Ft	R20

Property	Test Method2	Value
Thermal Resistance3, R-Value (180 days) minimum, hr·ft2·°F/Btu (RSI, °C·m2/W) @ 75°F (24°C) mean temperature	ASTM C518
¾" Thickness		4.0 (0.70)
1" Thickness		5.0 (0.88)
1½" Thickness		7.5 (1.32)
2" Thickness		10 (1.76)
2½" Thickness		12.5 (2.20)
3" Thickness		15 (2.64)
4" Thickness		20 (3.52)
@ 40°F (4.4°C) mean temperature
¾" Thickness		4.3 (0.76)
1" Thickness		5.4 (0.95)
1½" Thickness		8.1 (1.43)
2" Thickness		10.8 (1.90)
2½" Thickness		13.5 (2.38)
3" Thickness		16.2 (2.85)
4" Thickness		21.6 (3.80)
Long Term Thermal Resistance, LTTR-Value3, minimum hr·ft2·°F/Btu (RSI, °C·2/W) @ 75°F (24°C) mean temperature	CAN/ULC S770-03
¾" Thickness		N/A
1" Thickness		5.0 (0.88)
1½" Thickness		7.8 (1.37)
2" Thickness		10.6 (1.87)
2½" Thickness		13.4 (2.36)
3" Thickness		16.2 (2.85)
4" Thickness		22.0 (3.87)
Compressive Strength, minimum psi (kPa)	ASTM D1621	25 (172)
Flexural Strength, minimum psi (kPa)	ASTM C203	75 (517)
Water Absorption, maximum % by volume	ASTM C272	0.10
Water Vapor Permeance, maximum perm (ng/Pa·s·m2)	ASTM E96	1.5 (86)
Dimensional Stability, maximum % linear change	ASTM D2126	2.0
Flame Spread	ASTM E84	5
Smoke Developed	ASTM E84	45-175
Oxygen Index, minimum % by volume	ASTM D2863	24
Service Temperature, maximum °F (°C)		165 (74)
Linear Coefficient of Thermal Expansion, in/in/°F (m/m°C)	ASTM E228	3.5 x 10-5 (6.3 x 10-5)

Owens Corning FOAMULAR 250 XPS Insulation Board - All Sizes

Key Features & Design

Technical Details

Hall of Fame. Every one of our customers is guaranteed a free shoutout on our Instagram (@myhackertech)★ ★ ★ ★ ★

S I Z I N G C H A R T

F A Q

BEST SELLING PRODUCTS

HACKER, GAMER, DEVELOPER, CRYPTO KING HOODIES

Hall of Fame. Every one of our customers is guaranteed a free shoutout on our Instagram (@myhackertech)

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