Geotextile
A permeable fabric used in construction to separate, filter, protect or drain. In waterproofing it typically filters soil out of a drainage layer.
On an actual building
Under a podium planter, the geotextile stops soil migrating into and clogging the drainage cell. Without it the drainage layer silts up and the deck effectively becomes flat again.
What we most often have to correct
That it is optional landscaping fabric. It is the component that keeps the drainage layer working.
Terms that come up alongside this one
- Drainage Cell
A moulded void-forming panel laid over a waterproofing membrane beneath soil or paving, creating a continuous drainage path to outlets..
- Podium
A raised deck between the ground and tower floors, typically carrying landscaping, a clubhouse or parking, and sitting above occupied space..
- Protection Board
A sacrificial board or screed laid over a completed waterproofing membrane to shield it from mechanical damage by following trades or backfill..
Geotextile — questions we get asked
What does geotextile mean in waterproofing?
A permeable fabric used in construction to separate, filter, protect or drain. In waterproofing it typically filters soil out of a drainage layer.
Why does geotextile matter on a real project?
Under a podium planter, the geotextile stops soil migrating into and clogging the drainage cell. Without it the drainage layer silts up and the deck effectively becomes flat again.
What do people commonly get wrong about geotextile?
That it is optional landscaping fabric. It is the component that keeps the drainage layer working.
Have a building showing this?
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