Delta MS 500 – Cavity Drain Membrane

cavity drainage membrane
DELTA MS 500 is a cavity drain membrane that is used for waterproofing on walls, floors and vaulted ceilings, above and below ground, in new construction or in existing buildings over a contaminated or damp background.

Delta MS500 is an 8mm studded profile High Density Polyethylene (HDPE) clear cavity drainage membrane suitable for use on the internal faces of walls and floors as a water control & drained management system for protection of sub-ground structures against potentially adverse effects of ground water ingress.

  • Type C Drained Protection in accordance with BS 8102:2009
  • BBA ApprovedMS500 Cavity Drainage Membrane - Delta Membranes
  • Suitable for new, existing and retrofit basement projects
  • Flexibility to cope in structures where movement or vibration can be problematic
  • A “reversible” system, which will minimise damage to historical or heritage structures
  • Virgin high density polyethylene studded/moulded sheet (HDPE)
  • An effective barrier to the transmission of salts, liquid water and water vapour
  • Resistant to chemicals, root penetration, rot proof, neutral towards drinking water
  • Suitable for Flood Resilience2015-10-12 13.25.40
  • Resistant to Carbon Dioxide, Radon and Methane

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

It can support a dry lining, screed or flooring, in the following situations:

  • on damp walls and floors in underground situations subject to high groundwater levels, and perennial moistureDelta MS 500
  • on vaulted ceilings of archways or cellars subject to water ingress
  • in conjunction with a remedial dpc system where the walls and floors have a high salt content, and/or it is necessary to complete the installation immediately without allowing a period for initial drying
  • over walls and floors which have a friable or painted surface, are contaminated (eg with oil or mould), or have a high salt content
  • as a structural waterproofing membrane in areas subject to vibration.
Ancillary Products

Our ranges of ancillary products work as the perfect compliment the Delta MS500 Cavity Drain System, allowing for application on different substrates and surfaces both sealing and dealing with protrusions and condensation. We recommend:

Click the BBA certificate below for full installation instructions on page 6 onwards or watch our video guide.


View Brochure Technical Info BBA Certificate Watch Video Guide
Product code:DMS005 / DMS007
Material:high density polyethylene
Temperature Resistance:– 30°C to + 80°C
Thickness:approx. 0.6 mm
Stud Height:approx. 8 mm
Roll Size:2m x 20m / 2.4m x 20m
Compressive Strength:> 250 kN/m2
Chemical Properties:resistant to chemicals, resistant to root penetration, rotproof, neutral towards drinking water
Drainage (l/s · m):approx. 2.25 l/s · m
Drainage (l/min · m):approx. 135 l/min · m
Drainage (l/h · m):approx. 8 100 l/h · m
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