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Platon Double Drain is an impermeable polyethylene studded sheet with a polypropylene filter fabric bonded to the top surface of the studs. Use as a membrane drainage system for external basement walls or to protect underlying waterproofing from backfill damage. The filter fabric layer ensures soil cannot enter membrane cavities to impede drainage.

Fixing to vertical surfaces:

Double Drain X-Cramp provides tear resistant mechanical fixing to the top edge of the Double Drain membrane.

Joint lap:

Side laps and end laps of 150 mm and 300 mm respectively are recommended; laps sealed with joint sealant.

General information
Specification data - Rubber studded sheets
Product Reference

Platon Double Drain

Joint sealant

Not required

Platon Sealing Rope

Top edge protection

Not required

Platon Top Edge Moulding

Standard product features

Roll size:

2.0 m x 15 m x 7 mm.

Sheet thickness:

  • Membrane: 0.5 mm.
  • Stud height: 6 mm.

Unit weight:

0.58 kg/m².

Compressive strength (maximum):

200 kN/m².

Softening temperature:


Air gap volume:

4.0 L/m².

Drainage capacity (maximum):

2.3 L/m².

Life expectancy:

At least 50 years.



Product Options

Joint sealant:

Platon Sealing Rope is a blend of butyl and other rubbers; size, 10 mm diameter; colour, blue.

Top edge protection:

Platon Top Edge Mould prevents entry of soil and stones between the wall and membrane, or into the drainage layer.

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