Baseline 8 is a cavity drain membrane for tanking walls, floors and vaulted ceilings subject to high groundwater levels and persistent moisture.­  This basement waterproofing membrane is moulded from high density polyethylene (HDPE) and incorporates integral 8mm stand-off studs at 25 mm centres. These waterproofing products are supplied in a choice of 40m² and 48m² rolls, each including an 80mm wide stud-free strip for overlapping sheets.

As a BS 8102: 2009 Type C compliant waterproofing membrane, Baseline 8 is suitable for use on masonry or concrete substrates and can be used in new construction or in existing buildings as part of a tanking system that delivers a Grade 3 dry environment in basements and cellars.

When used on walls, studs can be screwed to the membrane fixing plugs to secure a frame for dry-wall lining with plasterboard; when used on floors the impermeable surface permits direct laying of floors and concrete screeds.

To waterproof wall surfaces, Baseline 8 cavity drain tanking membrane typically requires:

• 1 roll of waterproofing tape or 4 rolls of butyl rubber rope
• 200 brick plugs with ready-mounted waterproof seals

For waterproofing floors, 1 roll of Baseline 8 waterproof membrane typically require:

• 1 roll of waterproofing tape
• 1 roll of corner tape for use at floor/wall abutments

Baseline 8 waterproofing membrane forms part of a sealed basement tanking system with cavity drainage for disposing of water accumulation in situations where water ingress is an issue.