Geotextiles
Description

Needle-punched, non-woven geotextile polyester materials in two unit weights – 200 and 220 g/m². Suitable for uneven surfaces, e.g. traditional timber boards. They do not rot or cause adhesion and allow space for air flow between lead sheet and substrate.

Advantages:

  • Reduce drag arising from thermal movement of lead sheet over substrate.
  • Assist in the protection of lead against condensation corrosion, or chemical attack from stone, concrete or timber.
  • Protect lead from damage due to any uneven nature of substrate and provide support against downward pressure.

General information

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

H71/110 Lead sheet fully supported roof covering

H71/130 Lead sheet fully supported wall covering

H71/150 Lead sheet fully supported covering to dormers

H71/160 Lead-covered roofing panels

H71/170 Lead-covered cladding panels

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Specification data - Plastics sheets

Product Reference

Geotec

220 g/m².

Trevira

200 g/m².

Standard product features

Width:

  • Geotec: 1000 mm.
  • Trevira: 1100 mm.

Product Options

Technical properties:

- Geotec:

  • Colour: Green.
  • Tensile strength: 16.5 kN/m².
  • Pore size: 0.09 mm.
  • Puncture resistance: 2500 N.
  • Water permeability: 220 L/m²/s.

- Trevira:

  • Colour: Grey.
  • Tensile strength: 14.5 kN/m².
  • Pore size: 0.09 mm.
  • Puncture resistance: 2300 N.
  • Water permeability: 315 L/m²/s.

Flame test:

Satisfactory according to BS EN 479-12.

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