P20 is a high capacity drainage membrane recommended for use on all floor applications below ground due to its ability to control free flowing water. The deep stud profile is designed to resist blockages caused by lime deposits. P20 specified to waterproof new basement floor.


  • BBA approved
  • heavy duty, deep studded HDPE cavity drain membrane
  • principally used on floors
  • for areas subject to high volume water penetration
  • impermeable to water, gas and water vapour
  • Available in roll or sheet form