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  1. Advice & Inspiration
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  3. There’s more to R story

There’s more to R story

Think beyond R-values and get more from your roof insulation.

Discover the 3 reasons to look beyond the R-value

Not your average roofing insulation

A stable R-value is important when evaluating assembly options for your roof. But there are other factors that contribute to the longevity of your roof system. Stone wool roof insulation products offer a comprehensive thermal, acoustic, fire-safe and robust solution. By harnessing the power of stone, you can meet the performance, safety and environmental challenges today’s building owners face.

20181106 RWNA PHO 507

Noncombustibility to protect

A fire is not only dangerous, it can result in damage, loss of business revenues and even increased premiums. ROCKWOOL stone wool insulation is an ignition-resistant, non-combustible insulation that produces zero flame and zero smoke. This increased fire resistance can reduce the risk of a fire.

Superior acoustic absorption

The non-directional fiber structure of stone wool roofing insulation boards is specifically designed to reduce sound transfer. These boards can reduce up to 40% of unwanted, outside noise – creating more comfort for building occupants.

Robustness for long-term performance

ROCKWOOL insulating roof boards offer warrantied long-term thermal performance. From install to reroof, no matter the climate zone, ROCKWOOL stone wool insulation’s unique physical structure keeps its shape and toughness despite changes in temperature and humidity.

Don’t take all R-values at face value.

Other insulations shrink up to 2% over time, leading to permanent gaps that will impact the long-term performance of the roof system. ROCKWOOL stone wool insulation retains dimensional stability in all climates.

A stone wool roofing insulation and coverboard in one

ROCKWOOL MULTIFIX™ is the first stone wool insulation product with a built-in coverboard and a mineral-coated fiberglass facer that is compatible with multiple attachment methods. It can be used as a roof insulation or insulating coverboard over other insulations. ROCKWOOL MULTIFIX™ reduces the number of layers required while improving the performance of your entire assembly.

180212 RWNA PHO 129

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Double-duty with dual density

ROCKWOOL has pioneered innovative Dual Density technology through a specialized manufacturing process. Comprising a high-density outer layer and a lower-density sub-layer, Dual Density products such as ROCKWOOL TOPROCK® DD provide compressive resistance, excellent sound absorbency and many other benefits for different applications. 

20180629 RW-CWE-D PHO 298

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RWNA Toprock DD Plus Roofing

ROCKWOOL TOPROCK® DD

Used as a roof insulation or insulating cover board over other insulations, ROCKWOOL TOPROCK® DD is a high-density stone wool insulation board for low-slope roofs.

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RWNA Toprock DD Plus Roofing

ROCKWOOL TOPROCK® DD

Used as a roof insulation or insulating cover board over other insulations, ROCKWOOL TOPROCK® DD is a high-density stone wool insulation board for low-slope roofs.

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RWNA Multifix Roofing

ROCKWOOL MULTIFIX™

ROCKWOOL MULTIFIX™ is a dual-density, mineral wool insulation board with a glass fiber coating for flat roofing applications.

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