Description

Sika BlackSeal Elastic is a water-based bitumen emulsion modified with acrylic latex polymer used as a a damp proof membrane behind basement and retaining walls to prevent water vapour penetrating to the interior.

Scope

Sika BlackSeal Elastic has been appraised as a damp-proof membrane behind concrete masonry basement walls complying with NZS 4229.

Sika BlackSeal Elastic has also been appraised for use as a damp-proof membrane on buildings subject to specific design within the following scope:

• where the design of the building will be the responsibility of the building designer; and,
• with clean, sound, continuous substrates of insitu or precast concrete complying with NZS 3101 or concrete masonry complying with NZS 4210; and,
• where the membrane is adequately protected against damage during backfilling and in service; and,
• where subsoil drainage and free draining granular backfill has been placed behind basement walls.

When used to meet the requirements of the New Zealand Building Code this product must be applied by a Licensed Building Practitioner (LBP). The LBP must be trained and registered with Sika (NZ) Ltd.