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Toprock® DD Plus

ROCKWOOL Toprock® DD Plus is a high-density bitumen-coated insulation board for low-slope roof applications. It is compatible as the substrate for torched, hot mopped and self-adhered membrane systems.

RWNA Toprock DD Plus Roofing

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  • ULC Listed
  • UL Classified - CA/USA
  • Roof insulation
  • Low slope roof insulation

ROCKWOOL Toprock® DD Plus is a high-density, bitumen coated stone wool insulation board for low-slope roof applications. Toprock DD Plus is compatible as the substrate for torched, hot mopped, or self-adhered membrane systems.

Toprock DD Plus is noncombustible, will not develop toxic smoke or promote flame spread even when directly exposed to fire. Also offering improved sound absorbency and dimensional stability, Toprock DD Plus is designed to maintain performance for the long-term as part of your building envelope.

  • Sound absorbance
  • Dimensional stability
  • Fire resistance
  • Noncombustible
  • Thermal performance