Walldrain
Geocomposite Drainage Sheet
Key Features
- HDPE and geotextile composite
- Permits free entry of water
- Filters soil particles
- Relieves hydrostatic pressure
- Compatible with most waterproofing systems
- Available nationwide on short lead times
What is Walldrain?
WALLDRAIN consists of a preformed lightweight HDPE core bonded to a geotextile filter fabric. The filter was specifically developed to permit free entry of water and minimise the risk of soil particles clogging the drainage system.
WALLDRAIN is designed to be placed with the geotextile filter layer facing the direction of water seepage or backfill. WALLDRAIN can be applied against waterproofing membranes or directly against the masonry/concrete substrate.
Technical Data
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Core Thickness
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12mm
|
25mm
|
|
In plane water flow [HG=1.0]
|
4l/s/m
|
16l/s/m
|
|
In plane water flow [HG=0.01]
|
0.26l/s/m
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0.54l/s/m
|
|
Compressive strength
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500kPa
|
|
|
HDPE thickness
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1.0mm
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1.0mm
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Chemical resistance
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Unaffected by most acids , alkalis,oils,fuels ,chlorides and sulphates
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Unaffected by most acids , alkalis,oils,fuels ,chlorides and sulphates
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|
Organic resistance
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Resistant to microbial attack
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Resistant to microbial attack
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|
Application temperature range
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+50C to 500c
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+50C to 500c
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|
GEOTEXTILE
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|
|
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Material
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Polypropylene
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Polypropylene
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Type
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Heat bonded non woven needle punched
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Heat bonded non woven needle punched
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|
Chemical resistance
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Not affected by acid or alkali
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Not affected by acid or alkali
|
|
Bacteria / Fungi
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Does not support growth
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Does not support growth
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|
Mass/unit area
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136g/m2
|
136g/m2
|
|
Thickness
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0.46mm
|
0.46mm
|
|
Tensile Load
|
8.2kN/m
|
8.2KN/m
|
|
Puncture resistance
|
1.5kN BS EN ISO12236
|
1.5kN BS EN ISO12236
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|
Tear resistance
|
225/240N
|
225/240N
|
|
Pore size
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85µm
|
85µm
|
|
Water flow
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120l/m2/sec
|
120l/m2/sec
|