Description

Hitchins Gundec DPM Tanking Waterproofing Membranes are a range of polyester and fiberglass reinforced self-adhesive and torch-on modified reinforced bitumen membranes. The membranes are for use as damp-proof membranes (DPMs) and tanking membranes on basement retaining walls and under floors.

Hitchins Gundec DPM Tanking Waterproofing Membranes are applied under floor slabs and foundations, or to the exterior face of basement retaining walls to prevent water and water vapour penetrating to the interior face in spaces where moisture may cause damage.

Scope

1. Hitchins Gundec DPM Tanking Waterproofing Membranes have been appraised for use as DPMs within the following scope:

• under floor slabs complying with NZS 3604 and behind concrete masonry basement walls and under floor slabs complying with NZS 4229; and,
• on buildings subject to specific design with substrates of in-situ or precast concrete complying with NZS 3101, or concrete masonry complying with NZS 4230; and,
• where subsoil drainage and free draining granular backfill has been placed behind basement walls.

2. Hitchins Gundec DPM Tanking Waterproofing Membranes must be adequately protected against damage during backfilling and in-service.

3. Hitchins Gundec DPM Tanking Waterproofing Membranes must only be installed by Hitchins New Zealand Limited licensed and trained installers.