DITRA-HEAT-DUO adds a thermal break and sound control layer to the standard DITRA-HEAT membrane. Reach for this when the floor is above another living space, over a cold garage, or in a condo where impact noise transmission matters.

• 5/16" (8mm) thick — performs the same four functions as standard DITRA-HEAT (uncoupling, waterproofing, vapour management, load distribution) plus integrated sound and thermal insulation
• 108 sq ft roll at 32-5/8" wide — heating cables snap directly into the stud pattern, same as standard DITRA-HEAT
• Thermal break reduces downward heat loss into the subfloor, so more energy goes into warming your tile instead of heating the ceiling below

Pro tip: On a concrete slab over an unheated space (garage, crawlspace), the DUO's thermal break makes a real difference in heating efficiency. On a second floor over heated space, standard DITRA-HEAT is usually sufficient.