Smartrock®
ROCKWOOL Smartrock® is a stone wool insulation board with an integrated smart vapor retarder, or humidity-dependent vapor retarder, for continuous insulation on the interior of concrete and masonry wall assemblies.
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Popular applications
- Exterior wall insulation
- Interior-insulated mass wall
About this product
ROCKWOOL Smartrock® is a stone wool insulation board designed for use as continuous insulation on the interior side of concrete and masonry exterior wall assemblies.
This innovative product utilizes INTELLO® PLUS by Pro Clima as an integrated smart vapor retarder, allowing Smartrock to adapt to changing humidity conditions, while also creating an airtight layer when properly sealed. Smartrock is noncombustible, and achieves a Class A fire rating for flame spread and smoke development.
Smartrock is available in 24" x 48" boards sizes, with thicknesses from 2" to 5" in half inch increments.
- Noncombustible and fire resistant
- Consistent Thermal Control
- Smart Vapor Control
- Airtight assembly
- Efficient Installation
Why use stone wool insulation
- Provides stable, long-term thermal performance, even with changes in temperature
- Integrated smart vapor retarder to control vapor movement through the assembly, allowing the substrate to dry in both directions
- The integrated membrane provides an airtight layer when installed with proper sealing of insulation joists, fasteners, and other penetrations
- Smartrock is a Class A fire rated material in accordance with ASTM E84, and is classified as a noncombustible material in accordance with IBC Section 703.3.1.
- Smartrock offer fast and straightforward installation with only standard construction tools required, such as drills and hammers
Applications
- Interior-insulated concrete and masonry exterior walls.
- Ideal for projects in climate zones 4 and above requiring interior vapor control.
- Energy retrofits where existing cladding must remain, such as historic renovations.
- Effective for new construction with prefab concrete or masonry.
Product certificates
Declare
ICC-ES ESR-5374
Specifications & testing
Explore Smartrock® specifications and test results, based on relevant industry standards.
| Name | Value | Unit | Test standard |
|---|---|---|---|
| Mineral Fiber Block and Board Thermal Insulation | Type IVB Compliant | ASTM C612 | |
| Flame spread index | 15 | ASTM E84 | |
| Smoke Developed Index | 20 | ASTM E84 | |
| Combustibility of Materials at 750 °C | Non-combustible | ASTM E136 | |
| Corrosion of Steel | Passed | ASTM C665 | |
| R-Value / inch @ 75 °F | 4.2 | hr.ft².F/Btu | ASTM C518 (C177) |
| RSI value / 25.4 mm @ 24 °C | 0.74 | m²K/W | ASTM C518 (C177) |
| Determination of Fungi Resistance | Passed | ASTM C1338 |
Smartrock® technical documents & resources
Download Smartrock® technical documents and resources, including the product data sheet, to support accurate specification and efficient project planning.
Smartrock technical data sheet
Smartrock is noncombustible, Class A-rated, and its membrane enhances airtightness and efficiency.
Smartrock features and benefits fact sheet
ROCKWOOL Smartrock interior continuous insulation for mass walls features and benefits
Smartrock installation instructions in masonry wall construction
SMARTROCK - 072113 GUIDESPEC - US-EN
Smartrock - Drop in Specification - Vapor-Retarder-Faced Thermal Insulation
Construction Details - Existing Multi Wythe Masonry Retrofit with Interior Insulation
Guidelines for cutting stone wool insulation
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Product support & insights
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