Owens Corning

High Performance Rigid Foam Insulation

Why choose foam board insulation?

Owens Corning FOAMULAR® NGX® 350 is a high strength Extruded Polystyrene (XPS) Insulation product designed to be used in protected membrane roof assemblies.

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FOAMULAR® NGX® High-Performance XPS Insulation

Owens Corning® FOAMULAR® NGX® insulation offers all the performance and ease-of-use you expect from Owens Corning® FOAMULAR® insulation with industry-leading sustainability. Learn how FOAMULAR® NGX® meets the new environmental regulations for Canada and a growing list of US states.

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Product Focus: Owens Corning® FOAMULAR® NGX® Insulation
Product Focus: Owens Corning® FOAMULAR® NGX® Insulation

Technical Information

Performance Criteria

DIMENSION

PROPERTY

TEST METHOD

COMPLIANCE:

Evaluation Listing No. 13430-L

CCMC

Type 4CAN/ULC-S701.1-17
PHYSICAL PROPERTIES:

Compressive Strength1: 35 psi (240 kPa)

ASTM D1621

Compressive Modulus: 1480 psi (10204 kPa)

ASTM D1621

Flexural Strength2: 80 psi (552 kPa)

ASTM C203

Dimensional Stability, Maximum, % linear change: 1.5

ASTM D2126

Linear Coefficient of Thermal Expansion:

3.5x10–⁵ in/in./°F (6.3x10–⁵ mm/mm/°C)

ASTM E228

MOISTURE:

Thermal Resistance, R-Value, hr•ft²•°F

Btu (RSI, °C•m²/W) /5.0 (0.88) @ 24°C (75°F) mean temperature

5.4 (0.95) @ 4.4°C (40°F) mean temperature

5.6 (0.99) @ -3.9°C (25°F) mean temperature

ASTM C518 or C177

LTTR:

See data sheet for values

CAN/ULC-S770-15
MOISTURE:

Water Absorption, (max. % by volume): 0.70

ASTM D2842

Water Vapour Permeance: > 0.3 Perms (17 ng/Pa.s.m²)

ASTM E96

Water Capillarity: None

-

Water Affinty: Hydrophobic

-

Limiting Oxygen Index, min.: 24

ASTM D2863

FIRE:

Combustible

CAN/ULC-S114

Max. Service Temp. 74 °C (165 °F)

-

FM Approval Standard

4470
  1. Values at yield or 5% deflection, whichever occurs first.←
  2. Value at yield or 5%, whichever occurs first.←
  3. The R-value for FOAMULAR® NGX™ XPS Insulation is provided from testing at mean temperatures of: -3.9 °C (25 °F), 4.4 °C (40 °F), and 24 °C (75 °F) and aging techniques of 180-day real time aged (as mandated by ASTM C578).←

Applications

  • Roofs
  • Roofs > Flat
  • Roofs > Pitched / Curved

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