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Comfortboard® 80

ROCKWOOL Comfortboard® 80 is a rigid stone wool board designed for continuous insulation applications. A non-structural sheathing product, Comfortboard 80 provides increased thermal performance to the building envelope.

Comfortboard 80 is now available in 4” and 5” thicknesses, providing thermal performance up to R21 for building envelopes

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Specification & sizes

Compliance Mineral Fiber Block and Board Thermal Insulation - Type IVB Compliant
Density Actual Density - 8 lb/ft³ (128 kg/m³)
Dimensions

1” to 5”: 24" x 48" (610 mm x 1219 mm)

1.5”, 2.5”: 48" x 72" (1219 mm x 1829 mm)

1.25”, 1.5”, 2”, 2.5”, 3”: 48" x 96" (1219 mm x 2438 mm)

 

Thickness
1“ (25.4 mm)
1.25" (31.8 mm)
1.5" (38.1 mm)
2" (50.8 mm)
2.5“ (63.5 mm)
3" (76.2 mm)
4“ (101.6 mm)
5“ (127 mm)
Reaction to fire Flame spread index = 0 ; Smoke developed index = 0
ASTM E84 (UL 723) Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114 Determination of Non-Combustibility of Building Materials - Non-Combustible
Thermal resistance R-value / inch @ 75ºF - 4.2 hr.ft2.F/Btu
ASTM C518 (C177)

R-value / inch @ 75ºF - 4.2 hr.ft2.F/Btu

RSI value / 25.4 mm @ 24ºC - 0.70 m2K/W 

   RSI value / 25.4 mm @ 24ºC - 0.70 m2K/W
Acoustical Performance ASTM C423: NRC = 0.9
Reaction to moisture ASTM C1104 - ASTM E96 - ASTM C1338
ASTM C1104 Moisture Sorption - 0.05%
ASTM E96 Water Vapor Transmission, Desiccant Method - 1768 ng/Pa.s.m2 (31 perm)
ASTM C1338 Determination of Fungi Resistance - Passed
Compressive strength ASTM C165
ASTM C165 439 psf (21 kPa) @ 10% compression
  1065 psf (50 kPa) @ 25% compression
Corrosion Resistance ASTM C795 - ASTM C665
ASTM C795 Stress Corrosion Cracking Tendency of Austenitic Stainless Steel - Passed
ASTM - C665 Corrosion of Steel - Passed
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1” to 5”: 24" x 48" (610 mm x 1219 mm)

1.5”, 2.5”: 48" x 72" (1219 mm x 1829 mm)

1.25”, 1.5”, 2”, 2.5”, 3”: 48" x 96" (1219 mm x 2438 mm)

 

Back
1“ (25.4 mm)
1.25" (31.8 mm)
1.5" (38.1 mm)
2" (50.8 mm)
2.5“ (63.5 mm)
3" (76.2 mm)
4“ (101.6 mm)
5“ (127 mm)
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ASTM E84 (UL 723) Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114 Determination of Non-Combustibility of Building Materials - Non-Combustible
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ASTM C518 (C177)

R-value / inch @ 75ºF - 4.2 hr.ft2.F/Btu

RSI value / 25.4 mm @ 24ºC - 0.70 m2K/W 

   RSI value / 25.4 mm @ 24ºC - 0.70 m2K/W
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ASTM C1104 Moisture Sorption - 0.05%
ASTM E96 Water Vapor Transmission, Desiccant Method - 1768 ng/Pa.s.m2 (31 perm)
ASTM C1338 Determination of Fungi Resistance - Passed
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ASTM C165 439 psf (21 kPa) @ 10% compression
  1065 psf (50 kPa) @ 25% compression
Back
ASTM C795 Stress Corrosion Cracking Tendency of Austenitic Stainless Steel - Passed
ASTM - C665 Corrosion of Steel - Passed

Certifications

20210902 RWNA ILLUS 1624

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burn test, matt, matt muenster
Video

Burn Test

Matt Risinger Trailblazer images
Video

Comfortboard 80 Non-Flanged Window Installation

Comfortboard, external insulation, install, construction, exterior, home, wall
Video

How to install continuous exterior insulation

Comfortboard 80 techdata
PDF
273.7 KB

COMFORTBOARD 80 Non-Structural Sheathing Continuous Insulation - Techdata

Comfortboard 80 brochure
PDF
623.2 KB

Comfortboard 80 - Exterior non-structural insulated sheathing board

Comfortboard 80 Risinger Case Study brochure
PDF
1.7 MB

Risinger & Co Austin, Texas House Case Study

Tools, Guides & Downloads

 

 

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Comfortboard 80 - Exterior non-structural insulated sheathing board
Comfortboard 80 - Exterior non-structural insulated sheathing board

Continuous insulation in high-performance wall systems and more applications.

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Mid-Rise Wood Frame Construction Guide
Mid-Rise Wood Frame Construction Guide

This Mid-Rise Wood Construction Solutions Guide identifies several common locations where ROCKWOOL insulation can be used effectively in mid-rise wood construction.

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The California House Tahoe City, CA Case Study
The California House Tahoe City, CA Case Study

The California House is a custom-built residential home located in Tahoe City, California. Designed by local, full-service planning, design and engineering firm, Sagan Design Group, the home was built in the heart of a California Wildland Urban Interface (WUI) Zone.

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COMFORTBOARD COMFORTBATT Doug Tarry Homes Optimum Basement Wall Case Study
COMFORTBOARD COMFORTBATT Doug Tarry Homes Optimum Basement Wall Case Study

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Thermal Barrier Solutions - Technical Bulletin
Thermal Barrier Solutions - Technical Bulletin

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I-Joist Assemblies - Technical Bulletin
I-Joist Assemblies - Technical Bulletin

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ComfortBoard 80 Installation Guide
ComfortBoard 80 Installation Guide

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ROCKWOOL Cladding Attachment and Support Details
ROCKWOOL Cladding Attachment and Support Details

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COMFORTBOARD 80 Non-Structural Sheathing Continuous Insulation - Techdata
COMFORTBOARD 80 Non-Structural Sheathing Continuous Insulation - Techdata

Comfortboard ® 80 Thermal Insulated Sheathing ROCKWOOL Comfortboard ® 80 thermal insulated sheathing is a rigid stone wool insulation board designed for use as an exterior continuous insulation

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COMFORTBOARD 80 072113 BOARD INSULATION GUIDESPEC EN US
COMFORTBOARD 80 072113 BOARD INSULATION GUIDESPEC EN US

Specifications

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COMFORTBOARD 80 072113 BOARD INSULATION GUIDESPEC EN CA
COMFORTBOARD 80 072113 BOARD INSULATION GUIDESPEC EN CA

Specifications

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Safe Use Instruction Sheet
Safe Use Instruction Sheet

ROCKWOOL provides this SUIS for safe handling and use instructions.

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