Two-core drainage sheet consisting of a non-woven geotextile filter layer thermally welded to a water impermeable HDPE (High Density Polyethylene) drainage membrane.
01732 360 095
HydroBond 410 GeoDrain
Key Benefits
Key Benefits
- Prevents water pressure from bearing against the structure.
- Resistant to all chemicals normally found in the ground.
- Withstands stresses and movement acting as a slip membrane as the backfill settles.
- Allows for backfilling with excavated earth.
- Extremely strong material, minimising the risk of damage when backfilling even when no protection board is used.
- Very high compressive strength.
- Suspended soil particles (fines) are filtered out by the geotextile layer.
- Quick and easy to install with a range of ancillary fixing and installation products.
Typical Applications
Typical Applications
- As the drainage layer of an externally applied waterproofing system when used in conjunction with sheet applied or liquid applied external tanking membrane to BS 8102:2022.
- Protection of the structure from aggressive chemicals in the ground water.
- To prevent the build up of ground water to retaining walls.
Technical Data
Technical Data
| Installed Performance | Result |
| Thickness at 2kPa | 11.3mm |
| Water flow (in plane) | 3.50 l/m2/s |
| Water flow through Geotextile | 350 l/m2/s |
| Compressive strength – Temporary loading | 420 kPa |
| Water vapour diffusion resistance – Sd value | >604m |
| Water vapour diffusion resistance – µ value | >1208000µ |
| Water vapour diffusion resistance | >3020 MNs/g |
| Tensile strength (Machine direction) | 15.4 kN/m2 |
| Tensile strength (Cross direction) | 16.8 kN/m2 |
| Chemical resistance – Excellent | 100% |
| Oxidation resistance – Excellent | 100% |
FAQ
FAQ
What is a drainage membrane?
Drainage membranes are utilised as supplementary layers in various waterproofing systems, functioning as an anti-capillary obstruction in buried structures or drainage systems. Using drainage membranes in walls offers the following benefits: swift and effortless installation.
How long do water membranes last?
On average, it is recommended to replace the reverse osmosis membrane every 3-5 years. However, if the membrane continues to produce high-quality water, it could potentially be used for more than five years.
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