Rainscreen and Cavity Wall Rainscreen Continuous Insulation Steel Stud Wood Frame Construction Insulation

CAVITYROCK®

Cavityrock® is a semi-rigid insulation board designed for exterior cavity wall and rainscreen applications. These products offer superior long-term thermal efficiency, fire resistance, moisture control, acoustic performance and are compatible with numerous framing systems and cladding attachment systems.

Also available in a black mat facer finish for open-joint cladding systems, Cavityrock® Black combines your insulation install with masking in a single step, reducing installation time and material cost to achieve your desired design aesthetic.

Back
Back

Specification & sizes

Compare
ComplianceASTM C612, MEA Approval - CAN/ULC S702
ASTM C612Mineral Fiber Block and Board Thermal Insulation - Type IVB Compliant
236 - 05 - MMEA Approval, New York City Approval
CAN/ULC S702For information on CAN/ULC S702 compliance, contact ROCKWOOL Technical Support
DensityASTM C303
ASTM C303  Density (thickness: 1", 1.5", 2")> 4.3 lbs/ft3 (>69 kg/m3)* * Density will change with thickness, please contact ROCKWOOL for more information
Density (thickness ≥ 2.5")Dual Density - 6.2 lbs/ft³ (100 kg/m³) outer layer and 3.8 lbs/ft³ (61 kg/m³) inner layer
Dimensions

1” (25.4 mm) to 6” (152.4 mm) in 1/2” increments. 7” (177.8 mm) and 8” (203.2 mm)

24” x 48” (610 mm x 1219 mm) , 16” x 48” (406 mm x 1219 mm), 32” x 48” (813 mm x 1219) for 3”, 4”, 5 and 6” thicknesses

 

With black mat facer

2” (25.4 mm), 2.5” (63.5 mm), 3” (76.2 mm) to 6” (152.4 mm) in 1” increments (2.5”, 5” and 6” limited to 24 x 48 dimension)

24” x 48” (610 mm x 1219 mm) and 16” x 48” (406 mm x 1219 mm)

Thickness
≥ 2.5" Dual Density - 6.2 lbs/ft³ (100 kg/m³) outer layer and 3.8 lbs/ft³ (61 kg/m³) inner layer
Reaction to fireASTM E84 (UL 723) - CAN/ULC S102 - CAN/ULC S114 - ASTM E136
ASTM E84 (UL 723)Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114Determination of Non-Combustibility of Building Materials - Non-Combustible
ASTM E136Behavior of materials at 750°C - Non-Combustible

 

With black mat facer

ASTM E84 (UL 723)Flame spread index = 10; Smoke developed index = 25
CAN/ULC S102Flame spread index = 10; Smoke developed index = 10
Thermal resistanceASTM C518 (C177)
ASTM C518 (C177) R-value / inch @ 75ºF - 4.3 hr.ft2.F/Btu
 RSI value / 25.4 mm @ 24ºC - 0.75 m2K/W
Acoustical PerformanceASTM C423
Thickness125 Hz250 Hz500 Hz1000 Hz2000Hz4000 HzNRC
1.5"1.190.551.031.061.021.010.9
2"0.260.711.141.091.041.031
3"0.720.930.880.840.90.970.9
Reaction to moistureASTM C1104 - ASTM E96 - ASTM C1338
ASTM C1104Moisture Sorption - 0.03% by volume
ASTM E96Water Vapor Transmission, Desiccant Method - 1555ng/Pa.s.m2 (27 perm) 
ASTM C1338Determination of Fungi Resistance - Passed

 

With black mat facer

ASTM C1104Moisture Sorption - 0.65% by volume
ASTM E96Water Vapor Transmission, Desiccant Method - 2435ng/Pa.s.m2 (43 perm)
ASTM C1338Determination of Fungi Resistance - Passed
Back
ASTM C612Mineral Fiber Block and Board Thermal Insulation - Type IVB Compliant
236 - 05 - MMEA Approval, New York City Approval
CAN/ULC S702For information on CAN/ULC S702 compliance, contact ROCKWOOL Technical Support
Back
ASTM C303  Density (thickness: 1", 1.5", 2")> 4.3 lbs/ft3 (>69 kg/m3)* * Density will change with thickness, please contact ROCKWOOL for more information
Density (thickness ≥ 2.5")Dual Density - 6.2 lbs/ft³ (100 kg/m³) outer layer and 3.8 lbs/ft³ (61 kg/m³) inner layer
Back

1” (25.4 mm) to 6” (152.4 mm) in 1/2” increments. 7” (177.8 mm) and 8” (203.2 mm)

24” x 48” (610 mm x 1219 mm) , 16” x 48” (406 mm x 1219 mm), 32” x 48” (813 mm x 1219) for 3”, 4”, 5 and 6” thicknesses

 

With black mat facer

2” (25.4 mm), 2.5” (63.5 mm), 3” (76.2 mm) to 6” (152.4 mm) in 1” increments (2.5”, 5” and 6” limited to 24 x 48 dimension)

24” x 48” (610 mm x 1219 mm) and 16” x 48” (406 mm x 1219 mm)

Back
≥ 2.5" Dual Density - 6.2 lbs/ft³ (100 kg/m³) outer layer and 3.8 lbs/ft³ (61 kg/m³) inner layer
Back
ASTM E84 (UL 723)Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114Determination of Non-Combustibility of Building Materials - Non-Combustible
ASTM E136Behavior of materials at 750°C - Non-Combustible

 

With black mat facer

ASTM E84 (UL 723)Flame spread index = 10; Smoke developed index = 25
CAN/ULC S102Flame spread index = 10; Smoke developed index = 10
Back
ASTM C518 (C177) R-value / inch @ 75ºF - 4.3 hr.ft2.F/Btu
 RSI value / 25.4 mm @ 24ºC - 0.75 m2K/W
Back
Thickness125 Hz250 Hz500 Hz1000 Hz2000Hz4000 HzNRC
1.5"1.190.551.031.061.021.010.9
2"0.260.711.141.091.041.031
3"0.720.930.880.840.90.970.9
Back
ASTM C1104Moisture Sorption - 0.03% by volume
ASTM E96Water Vapor Transmission, Desiccant Method - 1555ng/Pa.s.m2 (27 perm) 
ASTM C1338Determination of Fungi Resistance - Passed

 

With black mat facer

ASTM C1104Moisture Sorption - 0.65% by volume
ASTM E96Water Vapor Transmission, Desiccant Method - 2435ng/Pa.s.m2 (43 perm)
ASTM C1338Determination of Fungi Resistance - Passed
Back

Tools, Guides & Downloads

 

 

printpdf
icon
Cavityrock® and Comfortbatt® Effective Insulation Solutions – The Future of High-Performance Rainscreen Systems
Cavityrock® and Comfortbatt® Effective Insulation Solutions – The Future of High-Performance Rainscreen Systems

The Building Envelope Design using ROCKWOOL

pdf
icon
Cavityrock ® Black Features and Benefits
Cavityrock ® Black Features and Benefits

The faced Cavityrock ® board reduces installation time and material cost to achieve your design aesthetic, particularly in open or exposed joint cladding applications

pdf
icon
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.

pdf
icon
Arizona State University Case Study
Arizona State University Case Study

Sustainability is the common theme in this project, not just in its function as an education and research center, but in its design and construction as well. The building is designed to meet specifications for LEED Gold at a minimum, and possibly Platinum.

pdf
CAVITYROCK Rush Hospital Case Study
CAVITYROCK Rush Hospital Case Study

pdf
CAVITYROCK Humber Hospital Case Study
CAVITYROCK Humber Hospital Case Study

pdf
CAVITYROCK Enclosure Renewal Project - The Belmont Case Study
CAVITYROCK Enclosure Renewal Project - The Belmont Case Study

pdf
icon
CAVITYROCK - 072113 GUIDESPEC - English - Canada
CAVITYROCK - 072113 GUIDESPEC - English - Canada

Specifications

pdf
icon
CAVITYROCK - 072113 GUIDESPEC - English - United States
CAVITYROCK - 072113 GUIDESPEC - English - United States

Specifications

pdf
icon
A Guide to NFPA 285 - Technical Bulletin
A Guide to NFPA 285 - Technical Bulletin

pdf
icon
Fire Protection of Exterior Walls per NBC - Technical Bulletin
Fire Protection of Exterior Walls per NBC - Technical Bulletin

This document draws out some of the main points from the NBC regarding fire protection of exterior walls incorporating combustible components, claddings or cladding elements.

pdf
icon
Cutting Recommendation for ROCKWOOL Cavityrock® Black
Cutting Recommendation for ROCKWOOL Cavityrock® Black

When installation requires cutting of the ROCKWOOL Cavityrock® Black, the insulation should be laid down on a rigid surface with the black finish facing up.

pdf
icon
Storage, Handling and Weather Exposure of ROCKWOOL Cavityrock® Black
Storage, Handling and Weather Exposure of ROCKWOOL Cavityrock® Black

For long-term storage, ROCKWOOL strongly recommends that the product be stored indoors in a dry location with the factory packaging removed. If the product is stored outdoors, the factory packaging should be perforated and the product protected by a waterproof, breathable covering

pdf
icon
Cavityrock Black Accessories - Technical Bulletin
Cavityrock Black Accessories - Technical Bulletin

pdf
icon
CAVITYROCK Cavity Wall and Rainscreen Applications - Techdata
CAVITYROCK Cavity Wall and Rainscreen Applications - Techdata

ROCKWOOL Cavityrock ® semi-rigid stone wool insulation board available in mono and dual density is designed for exterior cavity wall and rainscreen applications. Choose mono-density insulation in thicknesses up to 2” or dual-density in thicknesses of 2.5” to 6”

pdf
icon
Cladding Attachment Solutions For Exterior Insulated Commercial Walls
Cladding Attachment Solutions For Exterior Insulated Commercial Walls

Cladding Attachment Solutions For Exterior Insulated Commercial Walls

pdf
CAVITYROCK Builders Guide - Technical Guide
CAVITYROCK Builders Guide - Technical Guide

pdf
icon
Fastening Solutions for Stone Wool - Technical Guide
Fastening Solutions for Stone Wool - Technical Guide

pdf
Contractor Submittal Sheet CA
Contractor Submittal Sheet CA

pdf
Contractor Submittal Sheet US
Contractor Submittal Sheet US

pdf
icon
Safe Use Instruction Sheet
Safe Use Instruction Sheet

ROCKWOOL provides this SUIS for safe handling and use instructions.

pdf
Back

Questions? Contact Us

If you have technical questions about products or need support for your project, our technical experts are here to help you.

Contact Us