PermaSEAL 8 Clear Membrane 48m²
PermaSEAL 8 Clear is a high quality cavity drain waterproofing membrane suitable for use internally below ground to retaining walls, vaulted soffits and floors.

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RRP £276.00 Ex VAT
£150.00 Ex VAT £180.00 Inc 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.

Type C Basement Waterproofing Membrane

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

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


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.

Installation and Finishing

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.

PermaSEAL 8 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 (seek technical adivce). When used as a floor membrane insulation, underfloor heating, screed and floating floors can all be accommodated.

PermaSEAL BBA approved waterproofing system

Our PermaSEAL waterproofing system has BBA approval, awarded by the UK’s leading building product certification body. Independent, expert-led and trusted by professionals, BBA certificates are a symbol of quality within the construction industry. You can use our PermaSEAL 8 and 20 membranes and related products safe in the knowledge they have been independently tested to ensure the highest quality levels.


  • BBA Approved System
  • 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 and high temperature tolerances
Model: PS8C48
Manufacturer: Permagard
Packaging: individually
Size: 2.4m x 20m x 8mm
Coverage: 48m²
CE Mark DIN EN 13967 : 2012
BBA Certificate: BBA certificateCertification No: 19/5675
Approved by the British Board of Agreement
Country of Manufacture: United Kingdom

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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.