Baseline 8 kit for tanking basement walls and floors 40 & 48 sqm

(180 items in stock)

Baseline 8 Kit is a cavity drain membrane system for tanking walls, floors and vaulted ceilings that are damp or are subject to high groundwater levels and constant moisture.  

The Basement Water­pro­ofing Membrane Kit includes:

  • a choice of 40m2 and 48m2 roll (2 x 20m or 2 x 2.­4m)­ of cavity drain membrane, moulded from high density polyethylene (HDPE) and integrating integral 8mm stand-off studs at 25 mm centres and an 80mm wide stud-free overlap-strip.
  • 200 membrane plugs with ready-mounted waterproof seals for securing the membrane to masonry or concrete
  • 22.5m roll of butyl rubber water­pro­ofing tape or 4 rolls of butyl rubber rope

When used on walls, studs can be screwed to the aperture located in the head of the membrane 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

As a BS 8102: 2009 Type C compliant tanking membrane, Baseline 8 is suitable as part of a sealed basement water­pro­ofing system that delivers a Grade 3 dry environment and disposes of water build-up to combat water seepage via cavity drainage.

  Baseline 8 Cavity Drain Membrane   Data
  Material   HDPE
  Sheet Thickness   0.8mm
  Membrane Height   8mm
  Stud Height   7mm
  Water Void Capacity   4.95L//m²
  Weight   0.5 Kg/m² 
  Water tightness at 60 kPa   >24 hours
  Working Temperature   -50°C to +80°C
  Softening Temperature   126°C
  Mean Compressive Strength   169 kN/m² 

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Delivery options are only available for delivery to mainland UK (excluding Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man Northern Ireland and Eire). Delivery to Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man, Northern Ireland and Eire are limited to 20kg and are available at a Premium rate. Please contact us on or via our help line if delivery is required outside these areas. Alter­natively select ‘World-wide Delivery’ and a member of our sales staff will contact you regarding your options and costs.


We offer for the mainland UK , as standard, a FREE delivery service on all orders having a value greater than £200.00 (excluding VAT). For orders having a value less than £200.00 (excluding VAT) a carriage fee of £8.50 + VAT will be levied. Goods will be sent by a national carrier on their 1-2 working day standard service. Customers must understand that delays can always happen while their order is with the courier, for this reason we can not guarantee your order will be with you next day.

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Items returned and received in their original condition and packaging within 14 days of delivery will be accepted for exchange or refund subject to a 20% restocking fee. You will be responsible for the shipping costs incurred in returning the goods and should ensure the items are adequately insured while in transit to us. You should email to request to return items.

Where the goods are being returned because they are faulty or are not the goods that were ordered then, subject to the goods being returned in re-saleable condition, Twistfix will refund the cost of return shipping. Further information regarding Returns can be read at our Terms & Conditions.