PermaSEAL 8 Clear 40m² Waterproof Membrane Kit
Rating: 95 / 100

PermaSEAL 8 Clear Kit is designed for floor and wall application.


Availability: In stock

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RRP £300.00 Excl. VAT
£166.50 Excl. VAT £199.80 Incl. VAT

PermaSEAL Clear Waterproofing Membrane Kit - 40m²

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. The membrane can be finished with baton and board or a metal track or independent wall infront.

Kit Contents:

  • 1 x PermaSEAL 8 Clear Waterproofing Membrane 2m x 20m (40m²)
  • 1 x PermaSEAL Tape (for membrane jointing)
  • 2 x PermaSEAL Brick Plug Super (bag of 100) 
  • 2 x PermaSEAL Brick Plug Sealing Washer (bag of 100)
  • 1 x 10mm SDS Drill Bit

PermaSEAL 8 Clear is suitable for use in accordance with BS8102:2009 to provideType '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 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 Brick Plug Super  in combination with the seal 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 Brick Plug Super 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 insulation, underfloor heating, screed and floating floors can all be accommodated.

Related Resources

Make sure you comply with BS8102 Regulations. Read our guide to Basement Conversions for more information or browse more basement waterproofing products.



  • 8mm stud depth providing 5.3 litres of drainage volume per m2
  • High compressive load bearing strength 200kN/m2
  • Waterproof, salt resistant, root resistant, contaminant resistant
  • Easy to bend, form around windows, doors, vaulted ceilings etc
  • Easy to cut with scissors
  • Low and high temperature tolerances
Model: PS8CMK40
Manufacturer: Permagard
Packaging: As a kit
Size: 2m x 20m x 8mm
Coverage: 40m²
Country of Manufacture: United Kingdom

Great kit

Really pleased with this kit. Has the correct amount of fixing plugs which is more than can be said for the last company i used. Good service all round thanks.
Review by James on 12 Sep 2018

All good from me

Very happy with the quality of the kit and the price was very competitive
Review by Jason Rudgeway on 17 Jan 2017


Brilliant first time i have used it,and i will definately use it again
Review by Stan on 25 Mar 2016

Value for money

Good deal, does the job.
Review by Jamie on 04 Mar 2016

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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.