ROCKWOOL TOPROCK® DD is a high-density, uncoated stone wool insulation board for low-slope roof applications. TOPROCK® DD is a suitable substrate board for all low-slope roof decks and is compatible as the substrate for mechanically attached membrane systems.

TOPROCK® DD is non-combustible and will not develop toxic smoke or promote flame spread, even when directly exposed to fire. It can be used either as a base layer of thermal insulation in an assembly with TOPROCK® DD Plus or as the top layer of a hybrid roof assembly with polyisocyanurate or other roof insulations.

TOPROCK® DD has exclusive stone wool dual-density properties that feature a higher-density top layer, providing strong point load resistance and effective load distribution to minimize puncture damage to the membrane – particularly during installation.

Features

• Non-combustible, meeting FM 4470 NCC (Non-Combustible Core) Rating
• Will not warp or cup
• Dimensionally stable—provides a long-term, consistent thermal performance
• High impact resistance
• Excellent acoustic reduction, absorption and impact (rain noise) performance
• Made from natural & recycled materials
• ROCKWOOL® can contribute to earning LEED® points