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Basement Waterproofing

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  1. PermaSEAL 8 Clear 48m² Waterproof Membrane Kit
    PermaSEAL 8 Clear 48m² Waterproof Membrane Kit
    £210.00 Ex VAT
    £252.00 Inc VAT
    Out of stock
  2. HOT BUY
    PermaSEAL 8 Clear 40m² Waterproof Membrane Kit
    PermaSEAL 8 Clear 40m² Waterproof Membrane Kit
    Rating:
    95%
    £166.50 Ex VAT
    £199.80 Inc VAT
  3. PermaSEAL 8 Mesh 20m² Waterproof Membrane Kit
    PermaSEAL 8 Mesh 20m² Waterproof Membrane Kit
    £162.50 Ex VAT
    £195.00 Inc VAT
  4. PermaSEAL 8 Mesh 40m² Waterproof Membrane Kit
    PermaSEAL 8 Mesh 40m² Waterproof Membrane Kit
    Rating:
    100%
    £299.00 Ex VAT
    £358.80 Inc VAT
  5. PermaSEAL 8 Clear Membrane 48m²
    PermaSEAL 8 Clear Membrane 48m²
    £165.00 Ex VAT
    £198.00 Inc VAT
    Out of stock
  6. PermaSEAL 8 Clear Waterproofing Membrane 40m²
    PermaSEAL 8 Clear Membrane 40m²
    Rating:
    100%
    £126.00 Ex VAT
    £151.20 Inc VAT
  7. PermaSEAL 8 Mesh Membrane 40m²
    PermaSEAL 8 Mesh Membrane 20m²
    £110.00 Ex VAT
    £132.00 Inc VAT
  8. PermaSEAL 8 Mesh Membrane 40m²
    PermaSEAL 8 Mesh Membrane 40m²
    £215.00 Ex VAT
    £258.00 Inc VAT
  9. NEW DESIGN
    PermaSEAL 8 Eco Cavity Drain Membrane for Floors & Walls
    PermaSEAL 8 Eco Cavity Drain Membrane for Floors & Walls 40m²
    £89.00 Ex VAT
    £106.80 Inc VAT
  10. NEW SIZE
    PermaSEAL 20 Waterproof Floor Membrane 20m²
    PermaSEAL 20 Waterproof Floor Membrane 20m²
    Rating:
    100%
    £103.95 Ex VAT
    £124.74 Inc VAT
  11. 20mm Floor Membrane PermaSEAL
    PermaSEAL 20 Floor Membrane 40m²
    £204.75 Ex VAT
    £245.70 Inc VAT
  12. PermaSEAL Quick Plug
    PermaSEAL Quick Plugs Box of 100
    Rating:
    100%
    £39.90 Ex VAT
    £47.88 Inc VAT
  13. PermaSEAL brick plugs
    PermaSEAL Brick Plug Bag of 100
    £22.95 Ex VAT
    £27.54 Inc VAT
  14. PermaSEAL brick plugs with seals
    PermaSEAL Brick Plugs With Sealing Washers Bag of 100
    Rating:
    100%
    £29.95 Ex VAT
    £35.94 Inc VAT
  15. NEW MODEL
    PermaSEAL Plaster Plugs 60mm Bag of 200
    PermaSEAL Plaster Plugs 60mm Bag of 200
    £15.00 Ex VAT
    £18.00 Inc VAT
  16. Perma-Seal Cob Plugs
    PermaSEAL Cob Plugs 130mm
    £43.20 Ex VAT
    £51.84 Inc VAT
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Learn more about PermaSEAL Membranes

PermaSEAL&reg Basement Waterproofing Membranes

Our complete range of high quality BBA-approved basement waterproofing membranes provide highly effective waterproofing below ground. The PermaSEAL range features cavity drain membranes with varying stud heights to meet drainage capacity requirements below ground.

Basement Membranes designed to take different finishes

We manufacture PermaSEAL basement waterproofing membranes to suit different finishes. They can accommodate renders, dot and dab plasterboard, batten and board or can be used behind false walls.

Our basement membranes can be used on walls, floors, vaults and tunnels with the minimal amount of surface preparation required. PermaSEAL® waterproofing membranes can also be used in conjunction with other external waterproofing products to provide waterproofing for external foundation areas of buildings.

PermaSEAL Cavity Drainage System

PermaSEAL cavity drain membranes are designed to be used below ground as part of a Type C Waterproofing System, also known as a cavity drainage system. To provide for below ground structures, these cavity drain membranes need to be used in conjunction with a PermaSEAL Sump and Pump system and Drainage Channels for evacuating water from the structure.

BBA-approved cavity drainage membranes

Our PermaSEAL cavity drain membranes have 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 Clear and PermaSEAL 20 basement membranes and related products safe in the knowledge they have been independently tested to ensure the highest quality levels.

Shop the range now and benefit from a quality solution achieved through technical excellence.

Return to basement waterproofing membranes to continue browsing. Alternatively, browse external and foundation waterproofing membranes or our cavity drain floor membranes. You can also read our guide to installing cavity drain systems.