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

H71/180 Lead-wrapped panels

H71/250 Weathering to

H71/27 Soakers for mitred hips to slate/ plain tile roofs

H71/30 Apron flashings

H71/310 Ridge/ hip rolls to lead roofs

H71/315 Ridge/ hip rolls to slate roofs

H71/35 Cover flashings

H71/41 Soakers and step flashings

H71/410 Apron flashings

H71/420 Cover flashings

H71/430 Cover flashings

H71/440 Soakers and step flashings

H71/45 Step and cover flashings

H71/450 Step and cover flashings

H71/452 Single-step and cover flashings

H71/454 Single-step flashings

H71/456 Step flashings with secret gutter

H71/458 Step and cover flashing with secret gutter

H71/460 Change of roof pitch flashings

H71/470 Flashings

H71/472 Chimney flashings to slate/ plain tile roofs

H71/474 Chimney flashings to single lap tile roofs

H71/476 Chimney damp-proof course

H71/478 Chimney damp-proof course

H71/490 Vertical tiling/ Slating bottom edge flashings

H71/492 Vertical tiling/ Slating top edge flashings

H71/494 Vertical tiling/ Slating side abutment step flashings

H71/496 Vertical tiling/ Slating angle soakers

H71/497 Lead damp-proof course/ Cavity tray at raking abutments

H71/498 Combined lead damp-proof course/ Cavity tray and cover flashing at horizontal abutments

H71/5 Lead sheet fully supported covering to dormers

H71/50 Flashings

H71/52 Chimney flashings

H71/54 Vertical tiling/ Slating bottom edge flashings

H71/55 Vertical tiling/ Slating top edge flashings

H71/56 Vertical tiling/ Slating side abutment step flashings

H71/57 Vertical slating angle soakers

H71/64 Sheet underlay

H71/645 Sheet underlay

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.