Next Day Delivery order before 2pm
Order / Enquire Now
Call 020 8916 2222
Drainage
Protecto-Drain 20
Heavy Duty dimpled drainage sheeting for use in foundation walls, tunnels, bridges and civil engineering projects.
- Made from strong, flexible HDPE
- High compression strength with a dimpled (“egg box”) 20mm cup profile
- Cupped profile ensures a constant air gap between the layers of concrete
- Copes with larger quantities of ground water and drainage easily
- Used in both vertical and horizontal planes
- Does not pollute the water run off
- Rebar can be laid directly onto the membrane without damage and concrete can be poured directly onto it.
- Multiple sheets can be clipped into place by overlapping the cups and sealing joints with adhesive tape
Uses
- Heavier groundworks including tunnel lining and road construction
- Waterproofing and protection layer between layers of concrete
- To seal building envelopes on new build including foundations
- To manage and control subterranean water by channeling to effective drainage
By sticking to simple principles of not stopping water but redirecting it, hydrostatic pressure points are prevented.
Fixing
- Sheets are bonded together by overlapping cups and sealing with tape
- Can be taped with double sided tape or mechanically fixed with nails and special waterproofing plugs
Storage & Handling
Protect against prolonged exposure to direct sunlight and temperatures over 25 °C
NBS Source
-
Protecto Drain 20Close
Protecto-Drain 20 Technical Data
| 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 | 1,000 gsm (±10%) | calibrated thicknessmeasuring tape |
| Rolls per pallet | 5 | |
| Compression strength | 180 kN per m2 | MDV |
| Height of cups | 20mm | MDV |
| Air volume between the cups | 14 litres per m2 | MDV |
| Water drainage capacity | 10 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 |
Brochures
Technical Datasheets
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.