;
Multipurpose Wood Frame Construction Insulation

ROCKWOOL Rockboard®

Rockboard® is a premium multi-purpose board insulation to be used in walls, ceilings and floors for acoustic and thermal applications. These include insulating mechanical or utility rooms, or adding a barrier to noise and fire. 

Available in multiple variations to meet project requirements, use either Rockboard 40 or Rockboard 60.

Download brochure Case Study: The House at Cornell Tech
Download brochure Case Study: The House at Cornell Tech
Back

Rockboard® is a premium multi-purpose board insulation to be used in walls, ceilings and floors for acoustic and thermal applications

These include insulating mechanical or utility rooms, or adding a barrier to noise and fire. These products are available in various densities to support different applications.

Properties:

  • Fire-resistant, non-combustible product with a melting point of approximately 2150°F (1177°C)
  • Water and moisture resistant, repels water
  • Does not rot or promote the growth of mildew, fungi or bacteria
  • Unique directional fiber structure provides excellent sound control
  • Provides superior compressive strength for job site durability
  • Easy to install, cut, shape and fabricate
  • Fabrication at different densities maintains fire-resistant, water-resistant/-repellent and thermal properties
  • Available faced with reinforced foil
  • ROCKWOOL® can contribute to earning LEED® points
Back

Specification & sizes

Compliance ASTM C612
ASTM C612 Mineral Fiber Block and Board Thermal Insulation - Type IVA Compliant
Density ASTM C303
Actual Density
ROCKBOARD® 40 4 lb/ft³ (64 kg/m³)
ROCKBOARD® 60 6 lb/ft³ (96 kg/m³)
Dimensional stability ASTM C356
ASTM C356 Linear Shrinkage - <1% @ 1200°F
Dimensions
ROCKBOARD® 40 24" x 48" (610 mm x 1219 mm)
ROCKBOARD® 60 24" x 48" (610 mm x 1219 mm)
Thickness
ROCKBOARD® 40 1” through 4”  (25.4 mm – 101.6 mm)
ROCKBOARD® 60 2” through 4” (50.8 mm – 101.6 mm)
Reaction to fire ASTM E84 (UL 723) - CAN/ULC S102 - CAN/ULC S114 - ASTM E136 - ASTM C411
ASTM E84 (UL 723) Flame spread index = 0 ; Smoke development index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke development index = 0
CAN/ULC S114 Behavior of materials at 750°C - Non-Combustible

ASTM E136

Test for Non-Combustibility - Non-Combustible
ASTM C411 Hot Surface Performance - 1200°F
Thermal resistance ASTM C518 (C177)
  R-value / inch @ 75ºF RSI value / 25.4 mm @ 24ºC
ROCKBOARD® 40 4.2 hr.ft2.F/Btu 0.74 m2K/W
ROCKBOARD® 60 4.3 hr.ft2.F/Btu 0.75 m2K/W
Acoustical Performance ASTM C423
Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
1" 0.07 0.32 0.77 1.04 1.05 1.05 0.8
1.5" 0.18 0.48 0.96 1.09 1.05 1.05 0.9
2" 0.26 0.68 1.12 1.1 1.03 1.04 1
3" 0.63 0.95 1.14 1.01 1.03 1.04 1.05
4" 1.03 1.07 1.12 1.04 1.07 1.08 1.1
Reaction to moisture ASTM C1104 - ASTM C1338
ASTM C1104 Moisture Sorption - 0.03%
ASTM C1338 Determination of Fungi Resistance - Passed
Compressive strength ASTC C615
ROCKBOARD® 40 90 psf (4.3 kPa) @ 10% compression 225 psf (10.8 kPa) @ 25% compression
ROCKBOARD® 60 355 psf (17 kPa) @ 10% compression 585 psf (28 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
Back
ASTM C612 Mineral Fiber Block and Board Thermal Insulation - Type IVA Compliant
Back
Actual Density
ROCKBOARD® 40 4 lb/ft³ (64 kg/m³)
ROCKBOARD® 60 6 lb/ft³ (96 kg/m³)
Back
ASTM C356 Linear Shrinkage - <1% @ 1200°F
Back
ROCKBOARD® 40 24" x 48" (610 mm x 1219 mm)
ROCKBOARD® 60 24" x 48" (610 mm x 1219 mm)
Back
ROCKBOARD® 40 1” through 4”  (25.4 mm – 101.6 mm)
ROCKBOARD® 60 2” through 4” (50.8 mm – 101.6 mm)
Back
ASTM E84 (UL 723) Flame spread index = 0 ; Smoke development index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke development index = 0
CAN/ULC S114 Behavior of materials at 750°C - Non-Combustible

ASTM E136

Test for Non-Combustibility - Non-Combustible
ASTM C411 Hot Surface Performance - 1200°F
Back
  R-value / inch @ 75ºF RSI value / 25.4 mm @ 24ºC
ROCKBOARD® 40 4.2 hr.ft2.F/Btu 0.74 m2K/W
ROCKBOARD® 60 4.3 hr.ft2.F/Btu 0.75 m2K/W
Back
Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
1" 0.07 0.32 0.77 1.04 1.05 1.05 0.8
1.5" 0.18 0.48 0.96 1.09 1.05 1.05 0.9
2" 0.26 0.68 1.12 1.1 1.03 1.04 1
3" 0.63 0.95 1.14 1.01 1.03 1.04 1.05
4" 1.03 1.07 1.12 1.04 1.07 1.08 1.1
Back
ASTM C1104 Moisture Sorption - 0.03%
ASTM C1338 Determination of Fungi Resistance - Passed
Back
ROCKBOARD® 40 90 psf (4.3 kPa) @ 10% compression 225 psf (10.8 kPa) @ 25% compression
ROCKBOARD® 60 355 psf (17 kPa) @ 10% compression 585 psf (28 kPa) @ 25% compression
Back
ASTM C795 Stress Corrosion Cracking Tendency of Austenitic Stainless Steel - Passed
ASTM C665 Corrosion of Steel - Passed
Back

Tools, Guides & Downloads

 

 

print pdf
icon
ROCKBOARD® 40/60
ROCKBOARD® 40/60

ROCKBOARD® 40/60 provides superior sound absorption, thermal performance, moisture control and fire resistance for walls, ceilings and floors in mechanical rooms, theatres, recording studios and more. View all the details and specifications for use on your next project with our product guide.

pdf
icon
ROCKBOARD 406080-SP
ROCKBOARD 406080-SP

pdf
icon
Mid-Rise Wood Frame Construction Guide
Mid-Rise Wood Frame Construction Guide

Explore 16 different applications including walls, floors and roof assemblies where ROCKWOOL insulation can be used effectively in mid-rise wood construction, as well as the benefits of using stone wool in these assemblies.

pdf
icon
Amphithéâtre Sur St. Laurent CaseStudy
Amphithéâtre Sur St. Laurent CaseStudy

pdf
icon
CURTAINROCK Absolute World Towers Case Study
CURTAINROCK Absolute World Towers Case Study

pdf
icon
ROCKBOARD 40 - 072113 GUIDESPEC - English - Canada
ROCKBOARD 40 - 072113 GUIDESPEC - English - Canada

Specifications

pdf
icon
Specifications
Specifications

pdf
icon
ROCKBOARD 60 - 072113 GUIDESPEC - English - Canada
ROCKBOARD 60 - 072113 GUIDESPEC - English - Canada

Specifications

pdf
icon
ROCKBOARD 60 - 072113 GUIDESPEC - English - United States
ROCKBOARD 60 - 072113 GUIDESPEC - English - United States

Specifications

pdf
icon
Rockboard® 40 Multi-Purpose Board Insulation - Data Sheet
Rockboard® 40 Multi-Purpose Board Insulation - Data Sheet

Premium, semi-rigid multi-purpose stone wool insulation boards used in walls, ceilings and floors for acoustic and thermal applications.

pdf
icon
Rockboard® 60 Multi-Purpose Board Insulation - Data Sheet
Rockboard® 60 Multi-Purpose Board Insulation - Data Sheet

Premium, rigid multi-purpose stone wool insulation boards used in walls, ceilings and floors for acoustic and thermal applications.

pdf
icon
Board Insulation Attachment Guide
Board Insulation Attachment Guide

Get recommendations and view diagrams for attaching ROCKWOOL semirigid and rigid board insulation products for most common applications, including cladding attachment systems or plain board installation.

pdf
icon
Guidelines for Cutting Stone Wool Insulation
Guidelines for Cutting Stone Wool Insulation

This document provides essential steps and best practices for cutting ROCKWOOL stone wool insulation. It includes information on preparation, recommended tools, safety measures, and cutting techniques to ensure accurate and clean cuts. These guidelines help maintain the material's performance and integrity, making it suitable for both professionals and DIY users.

pdf
icon
Safe Use Instruction Sheet
Safe Use Instruction Sheet

This document is provided by ROCKWOOL to communicate recommended safe handling and use instructions.

pdf
System.Threading.Tasks.Task`1[Microsoft.AspNetCore.Html.IHtmlContent]

Our products are diverse and contribute to shaping a circular economy, enhancing resource efficiency, and nurturing the safety, health and wellbeing of people.

ROCKWOOL Group