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  • p8-membrane-standlone-2-4


Tanking Membrane P8 2m x 20m

£118.00 ex VAT (£141.60 inc.)

192 in stock

This P8 Membrane is perfect for basement / cellar tanking as part of a type C cavity drain system as per BS8102 (2009). HDPE 8mm studded membrane is robust and easily workable round corners and features. Easily fixed to the walls using our Pam brick plugs and seals or loose laid over concrete slabs for use as a flooring membrane. 2m x 20m PAM P8 Membrane - covers 40m2 Ideal Membrane for :

  • Basements / Cellars
  • Wet Rooms
  • Showers
  • Chimney breasts
  • High external ground level
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Pam Ties
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P8 Membrane is manufactured from polypropylene (PP).  This tanking membrane is impermeable and resistant to the usual chemicals in the building construction.  Studs are formed in a regular pattern on the one face of the product, spaced at approx. 25 mm centres.

2m x 20m PAM P8 Membrane – covers 40m2

The product is supplied in rolls of 20Mtrs in length x 2Mtrs High. P8 carries a full BBA agreement certificate and complies fully with BS8102 (2009).


P8 is tough but pliable and can be bent round corners and projections without risk of breaking, even in very low temperatures.  The membrane can be easily cut with a knife or scissors.

Everything you need to undertake basement or cellar tanking.


PAM P8 can be installed over a wide range of substrates in varying situations – walls, floors, ceilings, soffits, etc. However, before the system is installed the area must be assessed to determine what preparation is required:

a) All timber fixtures and other organic material must be removed to prevent risk of fungal or bacterial growth behind the membrane, e.g. skirting boards, timber plates, old wallpaper etc. If
evidence of rot exists, this must be dealt with by a specialist contractor prior to installation of the membrane. If any mould etc. exists, this should be cleaned off and the area sterilised with a fungicidal wash.

b) If the walls are uneven or areas have deteriorated, any large depressions should be levelled and made good to ensure a solid fixing.

c) When assessing floor applications, consideration should be given to the type of finish that is required. The floor must be cleared of oil, loose material and any sharp protrusions and most importantly be made level. Any holes or depressions should be filled. When a timber floor is preferred, then more consideration should be given to achieve a flat substrate prior to laying the membrane. This will relieve any undue movement when fitting a final floor finish.

d) When fixing the system to flat soffits you must ensure that there is a fall to create proper drainage and prevent ponding. Any sagging of the membrane should not be great enough for ponding
to take place.

Technical Data:

Raw Material: PP:
Sheet thickness: nominal 0.50mm
Construction height: approx. 6.5mm
Stud height (net): approx. 7mm
Unit weight: 0.45kg/m2
Deformation under long term loading: Max. 20% (at 50 kN/m2)
Working temperature: -10° to +60°C
Softening temperature: +160°C
Linear coefficient of thermal expansion: 0.18mm/m°C
Air gap volume: 4.0l/m2
Drainage capacity: approx. 3.8l/sm
No of studs: approx 1640 per m2
Life expectancy: at least 50 years
Water vapour resistance: 280 m equivalent air layer
Colour: Natural


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