PermaSEAL 8 Clear Membrane 40m²
Rating: 100 / 100

PermaSEAL 8 Clear is a high quality cavity drain waterproofing membrane suitable for use internally below ground to retaining walls, vaulted soffits and floors.


Availability: In stock

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RRP £230.00 Excl. VAT
£115.00 Excl. VAT £138.00 Incl. VAT

Clear Waterproofing Membrane

PermaSEAL 8 Clear is a high quality high density polyethylene (HDPE) membrane suitable for use in waterproofing structures below ground level (basements) and isolating damp walls above ground level. The stud depth of 8mm provides versatile use as both a wall and floor applied membrane.

PermaSEAL 8 Clear is suitable for use in accordance with BS8102:2009 to provide Type 'C' drained protection to structures below ground. It provides a Grade 3 dry environment suitable for domestic or commercial use.

It is essential that if applied in this way, the basement membrane is used in conjunction with the PermaSEAL Sump and pump system (unless passive drainage is available on one side of the building). It also needs to be maintained throughout the lifetime of the installation.

Benefits of PermaSEAL 8 Clear Waterproofing Membrane

PermaSEAL 8 Clear is guaranteed for 30 years and has a life expectancy of at least 50 years (DIN 9001:2000). PermaSEAL 8 Clear is an inert product with high compressive loading stability. It is highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals. It is also resistant to bacteria, fungi, and other small organisms.

Our innovative PermaSEAL Quick Plug is used when fitting the PermaSEAL 8 Clear to the wall and if a below ground waterproofing system is being installed then it should be used with our Drainage Channel, Floordrain and sump and pump drainage systems.

This Clear Waterproofing Membrane can accept a range of wall and floor finishes. PermaSEAL Quick Plugs and Brick plugs accept screws which allow for the addition of batons and metal lath systems which can be insulated before the addition of plasterboard finish. Fixtures, fittings walls and staircases can be built off PermaSEAL 8 Clear membrane. When used as a floor membrane, it can accommodate insulation, underfloor heating, screed and floating floors.


  • 8mm stud depth providing 5.3 litres of drainage volume per m2
  • High compressive load bearing strength 200kN/m2
  • Waterproof, salt resistant, root resistant, contaminent resistant
  • Easy to bend, form around windows, doors, vaulted ceilings etc
  • Easy to cut with scissors
  • Low & high temperature tolerances
Model: PS8C40
Manufacturer: Permagard
Packaging: individually
Size: 2m x 20m x 8mm
Coverage: 40m²
Country of Manufacture: United Kingdom

Fantastic Quality

The product is quite a bit cheaper, however the quality is easily on an equal par with Newton and Delta membranes, fast delivery thumbs up from me
Review by Jean Pierre on 23 Feb 2015

very happy

very happy with the quality of the product and help I received from Steve would recommend to use Permagard.
Review by George on 26 Jun 2014

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Can I render or dot and dabb over the PermaSEAL 8 Clear Waterproofing Membrane?

No, the membrane is designed to be baton and boarded over or have a metal track or independent wall placed in front. You cannot bond to this membrane, you would require the PermaSEAL 8 Mesh Membrane for that application.