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 MS 500 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 the protection of sub-ground structures against potentially adverse effects of groundwater ingress.

- BBA Approved
- 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 Resilience
- Resistant to Carbon Dioxide, Radon and Methane

- Length: 20m
- Width: 2m
- Thickness: 0.5mm
- Stud Height: 8mm
- Material: High-Density Polyethylene (HDPE)
- Compressive Strength: >250 kN/M²
- Drainage Capacity: (2.25 L/S M) (135 L/MIN M) (8 100 L/H M)
- Air volume Between Studs: 5.3 L/M²
- Reaction to Fire: EN13501-1 Class E
- R-Value: 0.12 M² K/W
- Drainage Capacity Per Meter: 2.25 L/S M²

Applications:
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 moisture
- 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.

Certification:
- Type C Drained Protection in accordance with BS 8102:2009
- BBA Approved
- EN13501-1 Class E
- NBS Specification J40 (Clause 290) Flexible Sheet Tanking/Damp proofing.