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• Insulate the structure.



• Protect the tanking the material from physical damage caused by the rest of the construction process or by the back fill material.



• Drain water away from the structure, reducing the hydrostatic pressure on the tanking membrane.

Insulating Basement Walls : Design

When externally insulating basement walls the insulation boards are laid against the tanking membrane and the excavation is then backfilled.

Considerations - Drainage and Thermal Performance Insulating Basement Walls : Installation

• Install the tanking membrane according to the manufacturer's instructions



• Lay the drainage system



• Install PERIMATE DI insulation against the tanking membrane, with the grooved face outward, supporting it so it does not move during backfilling.



• Backfill to the designated level