Protecto-drain can be manufactured with a polyester mesh bonded to one side. Plaster and rendering
can be laid onto the membrane and adheres to the surface, allowing internal walls to be constructed.
Tile adhesive can also be installed onto the mesh.
This material is very useful for internal tanking and basement rooms where the HDPE membrane acts as
a waterproofing and damp-proofing layer, and the internal plaster can then be installed on top. Protectodrain plaster grade material is ideal for retro-fitting of rooms in basements and underground installations.
As well as the regular HDPE / mesh version, a membrane incorporating the HDPE membrane, the
polyester mesh bonded one side and a geotextile fabric bonded the other side. This geotextile gives a
protection and cushioning layer to prevent any risk of the waterproofing or delicate membrane
immediately behind the Protecto-drain becoming damaged.
A range of white fixing studs and edging strips specifically for the plaster grade membrane is available.
Please call the sales office on +44 (0) 1883 715983 for more details
| Technical features | Technical data | Test Method |
| Material | High density polyethylene (HDPE) | |
| Roll width | 2 metres | calibrated measuring tape |
| Roll length | 20 metres | calibrated measuring tape |
| Roll weight | 550 gsm (±10%) | calibrated thickness measuring tape |
| Rolls per pallet | 12 | |
| Compression strength | 250 kN per m2 | MDV |
| Height of cups | 8mm | MDV |
| Number of cups | 1500 pieces per m2 | MDV |
| Air volume between the cups | 5.5 litres per m2 | MDV |
| Water drainage capacity | 4.6 litres per m2 | MDV |
| Temperature tolerance | - 30°C to + 80°C | MDV |
| Reaction to fire | B2 (B1 available by special request) | DIN 4102 |
| Physical characteristics | Rot-proof, resistant to fungus and bacteria. Will not leach chemicals. Not harmful to drinking water. No health hazards under normal use | |
Application
Used as a mechanical protection against soil and root movement along foundation walls. It can be installed with a 20cm overlap and fixed with nails and sealing buttons 5 cm from the top edges of the roll and 20cm from each roll. Edging profile is installed to prevent soil ingress into the cavity. Maximum build-up 8 metres high.
Laid horizontally and fixed using sealing tape in the overlapping areas the sheets protect concrete flooring form rising damp and keep reinforcement mesh in place firmly during the concrete works.
Storage and handling
Protect against prolonged exposure to direct sunlight and temperatures over 25 °C
Guarantee / warranty
When used in the correct manner and application, the material will be rot proof for 20 years. Wallbarn application rules and proper site storage, handling and installation practices must be carried out as a prerequisite for any possible future warranty claims.
Health and safety
No known dangerous substances
This datasheet represents the current knowledge of the product, but may be revised by Wallbarn in the future. It is the duty of the customer and installer to be clear that this product is suitable for the purposes it is used for.
This technical datasheet may be revised or changed at any time without prior notice. It is the duty of the customer and installer to be sure they possess the latest version of the datasheet.
To download our current brochure (in Adobe Acrobat PDF format) please click here.
Wallbarn Protecto-drain is high density polyethylene (HDPE) cupped drainage sheeting which acts as a protection and drainage layer for waterproofed surfaces.