Delta PT (PT Plaster Lath and PT Slimline) Cavity Drain Membrane

Delta PTDelta PT is a High Density Polyethylene (HDPE) cavity drain membrane.  Delta PT has been designed to incorporate a plastic mesh which is welded to the surface of this dimpled sheeting membrane.  Suitable as an impermeable damp proofing base for plaster or shotcrete (and as a water control and drainage membrane) in tunnel construction or for remedial damp proofing and waterproofing of existing basements internally.
  • Type C Drained Protection in accordance with BS 8102:2009
  • BBA Approved
  • A reversible system, which will minimize damage to historical or heritage structures
  • Virgin high density polyethylene studded/moulded sheet (HDPE)Delta PT
  • An effective barrier to the transmission of salts, liquid water and water vapour
  • Available in 2 stud heights
  • Resistant to chemicals, root penetration, rot proof, neutral towards drinking water
  • Suitable for Flood Resilience
  • Inert and compatible with all building materials
  • Meets the requirement for a radon barrier
  • Neutral towards drinking water
Delta PT

NBS Specification J40 (Clause 290) Flexible Sheet Tanking/Damp Proofing.  BS 8102:2009 Type C Drained Protection.

Available in 3 stud heights: 8mm, 7mm and 4mm.

Depending on the application required and the site conditions, the membrane may be used as:

  • a dry lining for walls, ventilated into the room via aeration slots at the top and bottom of the wall or via passive air vents, where access through an external wall is available
  • a sealed system covering wall, floor and ceiling with provision made for disposing of water build-up behind the membrane via a sump and pump.

Delta PTIt can support plastering, rendering or a dry lining fixed by plaster dabs (where appropriate) in the following situations:

  • on damp walls in underground situations subject to high groundwater levels, and perennial moisture
  • on vaulted ceilings of archways or cellars subject to water ingress
  • in conjunction with a remedial dpc system where the walls have a high salt content, and/or it is necessary to complete the installation immediately without allowing a period for initial drying
  • over walls which have a friable or painted surface, are contaminated with oil or mould, or have a high salt content
  • as a waterproofing membrane in areas subject to vibration.
Ancillary Products

Delta PT

Our ranges of ancillary products work as the perfect compliment the Delta MS 20 Cavity Drain System, allowing for application on different substrates and surfaces both sealing and dealing with protrusions and condensation. We recommend:

Technical Drawings

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Product code:DMS002/DMS001/DMS160
Material:high density polyethylene
Temperature Resistance:– 30°C to + 80°C
Thickness:0.5 mm approx.
Stud Height:8mm/8mm/4mm approx.
Roll Size:2.0 x 20 m/ 1.5 x 10 m/1 x 15m
Compressive Strength:70 kN/m2 approx.
Chemical Properties:resistant to chemicals, resistant to root penetration, rotproof, neutral towards drinking water
Drainage (l/s · m):5 L/S approx.
Drainage (l/min · m):300 approx.
Drainage (l/h · m):18 100 approx.
Behaviour in Fire:Class E

If you'd like more information on any of our products, call 01992 523 523 today to speak to one of our experts