A damp proof system for walls, consisting of a dimpled membrane with a mesh face, providing a key for plaster, render or dab fixed plasterboard.


  • The dimples form an air gap, which insulates and allows for ventilation and natural drying of the wall.
  • The air gap can be vented externally with the use of air vents, or internally using Delta®-PT profiles fixed to the top and bottom of the wall.


  • Plaster-Lath is fixed to the wall with Plaster Lath plugs and sealed with Delta sealant or grommet. Alternatively, use Delta-Qwik-Seal Plugs.
  • Fix sheets along all edges and generally at not more than 250 mm vertical and horizontal staggered centres.
  • When used externally, fixing centres must be closed up to 150 mm.


  • A 30 year product guarantee is available through Registered Installers.

Related literature

The following content references this product:

Standard product features


8 mm.

Roll width:

1500 mm.

Compresive strength:

80 kN/m².

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-75-45/310 Damp-proof lathing

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Delta Membrane Systems Ltd


+44 (0)1992 523523

Product reference



[Delta-PT Fixing Plugs]
[Delta-PT Lath Plugs with grommet]
[Delta-PT Profiles]
[Delta Sealant]
[Delta-Qwik-Seal Plug]
Plastic percussion plug with waterproof grommet for concrete or masonry.

Manufacturer details

Delta House,
Merlin Way,
North Weald,
Essex, CM16 6HR
Tel +44 (0)1992 523523
Fax +44 (0)1992 523250
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NBS National BIM Library