XPS Insulation

FOAMULAR® CW15 & 25

EXTRUDED POLYSTYRENE(XPS) RIGID FOAM INSULATION

Designed for masonry cavity wall applications, FOAMULAR insulation is virtually impervious to moisture. This moisture resistant property—along with its high R-value, light weight, competitive price and wide range of sizes—makes it ideal for use in a cavity wall system..

Designed for masonry cavity wall applications, FOAMULAR insulation is virtually impervious to moisture. This moisture resistant property—along with its high R-value, light weight, competitive price and wide range of sizes—makes it ideal for use in a cavity wall system..

Specifications and Literature

More Than Insulation. We Offer Solutions

Enclosure Solutions for Walls, Foundations and Roofs

Owens Corning® Enclosure Solutions deliver a range of options for commercial walls, roofs and below-grade foundations - all with customizable components to fit your project, and all backed by the experts at Owens Corning.

Find a Solution

Product Features

Moisture Management

Exceptional moisture resistance.

Easy Installation

Lightweight, durable rigid foam panels are easy to handle, saw, cut, score, and install.

Durability

Excellent long-term stable insulating performance of R-5 per inch.

Certifications

Resources

CavityComplete Concrete Masonry Unit (CMU) Wall System

CavityComplete Concrete Masonry Unit (CMU) Wall System

Installation | 2:30

Technical Information

PropertyTest Method2CW15CW25
Thermal Resistance3, R-Value minimum, hr·ft2·°F/BtuASTM C 518

@ 75°F (24°C) mean temperature

5.05.0

@ 40°F (4.4°C) mean temperature

5.45.4
Compressive Strength4, minimum psiASTM D 162115.025.0
Flexural Strength5, minimum psiASTM C 2034050
Water Absorption6, maximum % by volumeASTM C 2720.100.10
Water Vapor Permeance7, maximum permASTM E 961.101.10
Dimensional Stability, maximum % linear changeASTM D 21262.02.0
Flame Spread8, 9ASTM E 8455
Smoke Developed8, 9, 10ASTM E 8445-17445-174
Oxygen Index8, minimum % by volumeASTM D 28632424

  1. Properties shown are representative values for 1” thick material, unless otherwise specified.
  2. Modified as required to meet ASTM C 578
  3. R means the resistance to heat flow; the higher the value, the greater the insulation power. This insulation must be installed properly to get the marked R-value. Follow the manufacturer’s instructions carefully. If a manufacturer’s fact sheet is not provided with the material shipment, request this and review it carefully. R-values vary depending on many factors including the mean temperature at which the test is conducted, and the age of the sample at the time of testing. Because rigid foam plastic insulation products are not all aged in accordance with the same standards, it is useful to publish comparison R-value data. The R-value for FOAMULAR® XPS insulation is provided from testing at two mean temperatures, 40ºF and 75ºF, and from two aging (conditioning) techniques, 180 day realtime aged (as mandated by ASTM C 578) and a method of accelerated aging sometimes called “Long Term Thermal Resistance” (LTTR) per CAN/ULC . The R-value at 180 day real-time age and 75ºF mean temperature is commonly used to compare products and is the value printed on the product.
  4. Values at yield or 10% deflection, whichever occurs first.
  5. Value at yield or 5%, whichever occurs first.
  6. Data ranges from 0.00 to value shown due to the level of precision of the test method.
  7. Water vapor permeance decreases as thickness increases.
  8. These laboratory tests are not intended to describe the hazards presented by this material under actual fire conditions.
  9. Data from Underwriters Laboratories Inc.® classified. See Classification Certificate .
  10. ASTM E 84 is thickness-dependent, therefore a range of values is given.

Applicable Standards

  • SCS Recycled Content - Average 20%

Applications

Concrete Masonry Unit

Related Products

Find our Products

Distributors

Find a Professional

Owens Corning Expert

CONTACT US

Even though we’re a global company, we’re always ready to answer your questions. Call to speak with an Owens Corning representative so you can start your project right away.

1-800-GET-PINK