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

ROCKWOOL 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.

Download datasheet Case Study: The House at Cornell Tech
Download datasheet Case Study: The House at Cornell Tech
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Cavityrock® semi-rigid insulation board designed for exterior cavity wall and rainscreen applications

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”.

Compatible with numerous cladding attachment systems, Cavityrock® is a durable solution with non-combustible characteristics meaning that the insulation will not develop toxic smoke or promote flame spread even when directly exposed to fire. Approved for use in many NFPA 285-compliant designs, it is an important component of fire-resilient exterior wall systems when used as a continuous insulation.

Cavityrock® also offers energy efficiency with reliable thermal performance, improved acoustic comfort, and is moisture resistant to maintain insulating value for the long-term.

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.

Properties:

  • Non-combustible stone wool insulation with melting point of approximately 1177°C (2150°F)
  • Fire-resistant due to its high melting temperature
  • Water and moisture resistant; does not absorb moisture to maintain insulating value
  • Chemically inert
  • Does not rot or promote the growth of mildew, fungi or bacteria
  • CFC- and HCFC- free product and process
  • Made from natural and recycled materials
  • ROCKWOOL® can contribute to earning LEED® points
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Specification & sizes

Compliance ASTM C612, MEA Approval - CAN/ULC S702
ASTM C612 Mineral Fiber Block and Board Thermal Insulation - Type IVB Compliant
236 - 05 - M MEA Approval, New York City Approval
CAN/ULC S702 For information on CAN/ULC S702 compliance, contact ROCKWOOL Technical Support
Density ASTM 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) for all sizes, 32” x 48” (813 mm x 1219) for 3”, 4”, 5 and 6” thicknesses

 

With black mat facer

2” (25.4 mm) to 4” (101.6 mm) in 1/2” increments, 5” (127 mm), 6” (152.4 mm)

24” x 48” (610 mm x 1219 mm) and 16” x 48” (406 mm x 1219 mm), 2.5”, 5” and 6” limited to 24 x 48 dimension

Reaction to fire ASTM 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 S102 Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114 Determination of Non-Combustibility of Building Materials - Non-Combustible
ASTM E136 Behavior 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 S102 Flame spread index = 10; Smoke developed index = 10
Thermal resistance ASTM 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 Performance ASTM C423
Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000Hz 4000 Hz NRC
1.5" 1.19 0.55 1.03 1.06 1.02 1.01 0.9
2" 0.26 0.71 1.14 1.09 1.04 1.03 1
3" 0.72 0.93 0.88 0.84 0.9 0.97 0.9
Reaction to moisture ASTM C1104 - ASTM E96 - ASTM C1338
ASTM C1104 Moisture Sorption - 0.03% by volume
ASTM E96 Water Vapor Transmission, Desiccant Method - 1555ng/Pa.s.m2 (27 perm) 
ASTM C1338 Determination of Fungi Resistance - Passed

 

With black mat facer

ASTM C1104 Moisture Sorption - 0.65% by volume
ASTM E96 Water Vapor Transmission, Desiccant Method - 2435ng/Pa.s.m2 (43 perm)
ASTM C1338 Determination of Fungi Resistance - Passed
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ASTM C612 Mineral Fiber Block and Board Thermal Insulation - Type IVB Compliant
236 - 05 - M MEA Approval, New York City Approval
CAN/ULC S702 For 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
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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) for all sizes, 32” x 48” (813 mm x 1219) for 3”, 4”, 5 and 6” thicknesses

 

With black mat facer

2” (25.4 mm) to 4” (101.6 mm) in 1/2” increments, 5” (127 mm), 6” (152.4 mm)

24” x 48” (610 mm x 1219 mm) and 16” x 48” (406 mm x 1219 mm), 2.5”, 5” and 6” limited to 24 x 48 dimension

Back
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
ASTM E136 Behavior 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 S102 Flame 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
Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000Hz 4000 Hz NRC
1.5" 1.19 0.55 1.03 1.06 1.02 1.01 0.9
2" 0.26 0.71 1.14 1.09 1.04 1.03 1
3" 0.72 0.93 0.88 0.84 0.9 0.97 0.9
Back
ASTM C1104 Moisture Sorption - 0.03% by volume
ASTM E96 Water Vapor Transmission, Desiccant Method - 1555ng/Pa.s.m2 (27 perm) 
ASTM C1338 Determination of Fungi Resistance - Passed

 

With black mat facer

ASTM C1104 Moisture Sorption - 0.65% by volume
ASTM E96 Water Vapor Transmission, Desiccant Method - 2435ng/Pa.s.m2 (43 perm)
ASTM C1338 Determination of Fungi Resistance - Passed

Product

R-value

Thickness (inch)

Width (inch)

Item number Product R-value Thickness (inch) Width (inch) Length (inch) Pieces Per Pack Packs Per Pallet Square Feet Per Pack Square Feet Per Pallet
240231 Cavityrock 4.3 1 16 48 24 16 128 2048
240274 Cavityrock 4.3 1 24 48 12 16 96 1536
240270 Cavityrock 6.45 1.5 16 48 16 16 85.3 1365
240275 Cavityrock 6.45 1.5 24 48 8 16 64 1024
168839 Cavityrock 8.6 2 16 48 12 16 64 1024
168838 Cavityrock 8.6 2 24 48 8 12 64 768
322196 Cavityrock 10.75 2.5 16 48 16 10 85.3 853.3
168843 Cavityrock 10.75 2.5 24 48 7 10 56 560
322199 Cavityrock 12.9 3 16 48 16 8 85.3 682.64
168845 Cavityrock 12.9 3 24 48 5 12 40 480
275207 Cavityrock 12.9 3 32 48 4 12 42.7 512
322202 Cavityrock 15.05 3.5 16 48 8 14 42.7 597.4
168847 Cavityrock 15.05 3.5 24 48 5 10 40 400
322303 Cavityrock 17.2 4 16 48 12 8 64 512
168849 Cavityrock 17.2 4 24 48 5 10 40 400
298912 Cavityrock 17.2 4 32 48 4 12 42.7 512
322308 Cavityrock 19.35 4.5 16 48 6 14 32 448
168857 Cavityrock 19.35 4.5 24 48 3 14 24 336
322312 Cavityrock 21.5 5 16 48 8 10 42.7 427
168851 Cavityrock 21.5 5 24 48 4 10 32 320
168867 Cavityrock 21.5 5 32 48 2 15 21.3 320
307728 Cavityrock 23.65 5.5 16 48 6 12 32 384
308767 Cavityrock 23.65 5.5 24 48 3 12 24 288
322314 Cavityrock 25.8 6 16 48 4 16 21.3 341
168858 Cavityrock 25.8 6 24 48 4 8 32 256
305709 Cavityrock 25.8 6 32 48 4 8 42.7 341
307733 Cavityrock 30.1 7 16 48 6 8 32 256
308772 Cavityrock 30.1 7 24 48 2 14 16 224
307736 Cavityrock 34.4 8 16 48 4 12 21.3 256
293612 Cavityrock 34.4 8 24 48 2 12 16 192
288924 Cavityrock Black 8.6 2 16 48 12 16 64 1024
288926 Cavityrock Black 8.6 2 24 48 8 12 64 768
307726 Cavityrock Black 10.75 2.5 24 48 8 10 64 640
322366 Cavityrock Black 12.9 3 16 48 16 8 85.3 683
289131 Cavityrock Black 12.9 3 24 48 5 12 40 480
292150 Cavityrock Black 15.1 3.5 24 48 4 14 32 448
322368 Cavityrock Black 17.2 4 16 48 12 8 64 512
289135 Cavityrock Black 17.2 4 24 48 5 10 40 400
289138 Cavityrock Black 21.5 5 24 48 4 10 32 320
289140 Cavityrock Black 25.8 6 24 48 4 8 32 256

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CAVITYROCK - 072113 GUIDESPEC - English - United States
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Additional Information About ROCKWOOL Cavityrock® Black
Additional Information About ROCKWOOL Cavityrock® Black

ROCKWOOL Cavityrock® Black is designed, tested, and approved for use in cavity wall and rainscreen systems that require a black finish due to the material being visible behind the cladding. This black finish is for aesthetic appeal where any visible insulation between the cladding joints will appear black rather than the natural insulation colour.

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Safe Use Instruction Sheet
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This document is provided by ROCKWOOL to communicate recommended safe handling and use instructions.

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