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Thermafiber® RainBarrier® | Owens Corning Insulation

Continuous Insulation

Why Choose Mineral Wool Continuous Insulation?

Thermafiber® RainBarrier®* continuous insulation semi-rigid products are designed for exceptional performance in rain screen and cavity wall construction applications. Thermafiber® RainBarrier® insulation provides thermal control, fire-resistive characteristics, acoustical control, vapour permeance, and the ability to drain water from a wall cavity system. All Thermafiber® RainBarrier® products are non-combustible and compatible with common wall ties, adhesives, and air barrier systems.

*Latest RainBarrier® products combine the benefits of RainBarrier® 45 and RainBarrier® HD as of May 2024.
Canadian Rainbarrier Insulation Guide
Mineral wool insulation board

RainBarrier® is now available with a black veil that provides camouflaging in open-joint facade and rainscreen construction.
See Owens Corning publication “Thermafiber® RainBarrier® Dark™ Product Data Sheet” (Pub. No. 600092) for more information.

Features

  • Mold-resistant, non-deteriorating, and inorganic as tested to ASTM C1338
  • Repels and drains water
  • UV-resistant
  • Helps conserve energy and reduce greenhouse gas emissions
  • Mineral wool is non-combustible as tested to CAN/ULC-S114
  • Enhances acoustical performance
  • Minimum 70% recycled content1
  • Contributes to credits in several green building programs, such as LEED® and Green Globes®

Standards, Codes Compliance

  • CAN/ULC-S702.1, Standard for Mineral Fibre Thermal Insulation for Buildings, Type 1
  • ASTM C612, Mineral Fibre Block and Board Thermal Insulation, Types IA, IB, II, III, IVA, IVB

Installation

Thermafiber, Inc. recommends mechanical attachment of Thermafiber® RainBarrier® insulation products. See Owens Corning publication “Thermafiber® RainBarrier® Insulation Guide - Canada” (Pub. No. 600060) for more information. The types of fastener, method, and frequency are to be determined by the installer for the specificity of the project and approved by the project design team.

Certifications and Sustainable Features

  • Verified by ICC-ES to contain a minimum of 70% recycled content. See ICC-ES Evaluation Report VAR-1025 at icc-es.org.
  • Environmental Product Declaration (EPD) has been certified by UL Environment. For more information, visit ul.com/epd.
  • Health Product Declaration (HPD).

Performance Attributes

Fire resistance icon

Fire Resistance

Energy conservation icon

Energy Conservation

Thermal comfort icon

Thermal Comfort

Moisture management icon

Moisture Management

Technical Information

Performance Criteria

PROPERTY

VALUE

TEST METHOD

COMPLIANCE

CCMC Evaluation Listing No. 14060-L
Type 1

CCMC
CAN/ULC-S702.1

Additional Performance Criteria

PROPERTY

VALUE

TEST METHOD

FIRE

Non-Combustible

CAN/ULC-S114

Non-Combustible as defined per NFPA Standard 220

ASTM E136

Smoulder Resistance Mean Mass Loss ≤ 0.02%

CAN/ULC-S129

Flame Spread 0; Smoke Developed 5

CAN/ULC-S102

Flame Spread 0; Smoke Developed 0

ASTM E84

STABILITY

Linear Shrinkage <2% @ 650°C (1,200°F) 

ASTM C356

MOISTURE

Moisture Absorption 0.03% by volume

ASTM C1104

Water Vapour Permeance 1432 ng/Pa.s.m2 - 2850 ng/Pa.s.m2 (25 perm - 50 perm)

ASTM E96

Fungi Resistance - Complies

ASTM C1338

CORROSION

Stress Corrosion — Austenitic Stainless Steel (Pass)

ASTM C795

Corrosion of Steel, Aluminum, and Copper (Pass)

ASTM C665

ACOUSTICAL
PERFORMANCE

Thickness125 Hz250 Hz500 Hz1000 Hz2000 Hz4000 HzNRC



ASTM C423

38 mm (1")0.220.440.961.061.051.050.90
51 mm (2")0.300.691.081.011.001.030.95
76 mm (3")

0.70

1.071.241.131.071.081.15

102 mm (4")

1.03

1.25

1.20

1.05

1.05

1.08

1.15

Technical Data

NOMINAL DENSITY

RSI /25.4 MM @ 24 ºC M2•K/W

R-VALUE/INCH @ 75 ºF HR•FT2•ºF/BTU

TEST METHOD

96 kg/m3 (6.0 pcf)

0.74

4.2

ASTM C518

Availability4

THICKNESS2

STANDARD DIMENSIONS3

25 mm - 203 mm (1" - 8")

406 mm x 1219 mm (16″ x 48″),
610 mm x 1219 mm ( 24″ x 48″)

2 Thicknesses are available in 13 mm (1/2") increments.
3 Custom sizes are available upon request.
4 Available with black veil upon request.

Environmental and Sustainability

Owens Corning is a worldwide leader in building material systems, insulation, and composite solutions, delivering a broad range of high-quality products and services.

Owens Corning is committed to driving sustainability by delivering solutions, transforming markets, and enhancing lives. More information can be found at owenscorning.ca or owenscorninglibrary.ca.


Technical Services Available

For Canadian Technical inquiries, please contact our technical team at owenscorning.ca/contacttech.


Disclaimer of Liability
Technical information contained herein is furnished without charge or obligation and is given and accepted at recipient’s sole risk. Because conditions of use may vary and are beyond our control, Owens Corning makes no representation about, and is not responsible or liable for, the accuracy or reliability of data associated with particular uses of any product described herein. Owens Corning reserves the right to modify this document without prior notice.
LEED® is a registered trademark of the U.S. Green Building Council.
Green Globes® is a registered trademark of Green Building Initiative, Inc.

Notes
For additional information, refer to the Safe Use Instruction Sheet (SUIS) found in the SDS Database via sds.owenscorning.com.
Certification logos

Applications

  • Walls

Contact Us

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