Toprock® Tapered, Flute Filler and Cant Strips
Fabricated stone wool insulation components for low-slope roof applications are engineered for compatibility with a variety of membrane types, air/vapor barriers, fasteners, and adhesives, for both new construction and re-roofing applications.
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Popular applications
- Roof insulation
- Low slope roof insulation
About this product
ROCKWOOL Toprock® Tapered, Flute Filler and Cant strip fabricated components are cut from high-density stone wool roof insulation that will not warp or cup. The low co-efficient of linear expansion of this material means less movement during temperature changes and no shrinking over time that could otherwise cause energy loss.
Toprock Tapered products are available with and without a bitumen facing, and are engineered to ensure positive drainage and avoid ponding.
Toprock Flute Filler inserts into the void of standard metal deck profiles to absorb noise and incidental sound.
Toprock Cant strips are available with a bitumen coating to provide transitions from horizontal to vertical surfaces.
- Noncombustible and fire resistant
- Dimensionally Stable
- Sound Absorbent
- Water Resistant
- Ease of Installation
- Stable R-value
Why use stone wool insulation
- Noncombustible and fire resistant, stone wool works to contain a fire and prevent its spread.
- Stone wool will not expand or contract with changes in temperature, minimizing gaps and providing consistent energy efficiency for your building.
- High-density insulation offers improved sound reduction, helping dampen outdoor noise and rainfall.
- Will not absorb or adsorb moisture and increases the drying potential of the assembly.
- Cuts easily and cleanly with a serrated blade to produce precise, straight lines and lays flat with a seamless fit.
Applications
- Designed for low-slope roofing applications to support full assembly design.
- Compatible with a variety of membrane types, air/vapor barriers, fasteners, and adhesives.
- Can be used in both new construction and re-roofing applications.
Product certificates
UL Classified - CA/USA
FM Approved
Miami-Dade County Approved
Specifications & testing
Explore Toprock® Tapered, Flute Filler and Cant Strips specifications and test results, based on relevant industry standards.
| Name | Value | Test standard |
|---|---|---|
| NCC (Non Combustible Core) Rated Roof Insulation | Passed | FM 4470 |
| Flame spread index | 0 | ASTM E84 |
| Smoke Developed Index | 0 | ASTM E84 |
| Combustibility of Materials at 750 °C | Non-combustible | ASTM E136 |
| Determination of Non Combustibility of Building Materials | Non-combustible | CAN/ULC S114 |
| Fire Tests of Roof Coverings | Class A | CAN/ULC S107-03 |
| Heat Release Rate of Roofing Assemblies with Combustible Components | Class 1 | NFPA 276 |
| Corrosion of Steel | Passed | ASTM C665 |
| Compressive resistance description | Entire Board - 11psi (75kPa) @ 10%, 15psi (105kPa) @ 25% |
Toprock® Tapered, Flute Filler and Cant Strips technical documents & resources
Download Toprock® Tapered, Flute Filler and Cant Strips technical documents and resources, including the product data sheet, to support accurate specification and efficient project planning.
Toprock tapered, flute filler and cant strip components
Guidelines for cutting stone wool insulation
Dimensional stability of rigid board insulation products
Enhancing metal roofing systems with stone wool insulation
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Product support & insights
From expert technical guidance to real-world case studies and certified sustainability documents, access the tools and insights that support confident, high-performance building with stone wool insulation.
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