Protecto-Drain G20 features high-quality, durable materials that offers secure protection when backfilling.

Protecto-drain 20P was developed for use as a reservoir and drainage layer in green roof construction. It is placed on top of
the waterproofed, protected concrete deck and sits beneath a filter layer, the soil substrate and vegetation layers, on extensive
green roof systems.

Wallbarn Protecto-drain 20P is lightweight and easy to transport and install, making it ideal for rooftop applications.
On a horizontal plane, this allows water to fill up in the cups helping to sustain the roots with any excess water escaping through the holes and able to run away
beneath the membrane into the drainage outlet.
The egg-box creates a constant air gap, allowing the excess water to pass easily without clogging.

• Recycled and recyclable HDPE core
• 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
• 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
• Supplied in rolls of 2 x 10m