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Loose-laid membrane for protecting structures against the ingress of moisture, methane, radon and carbon dioxide. Also acts as a damp proof membrane.

General information
Uniclass 2015
Pr_25_57_65_60 Plastics sheetsPrimary
Specification data - Plastics sheets
Product Reference

Hyload Gastite LL Trade DPM

Roll size

2 x 25 m, Product code: 30850000

2 x 50 m, Product code: 30830000


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Standard product features


Virgin-grade polyethylene.


  • Methane gas permeability (ISO 2782:1995): 2.71 E-17.
  • Radon Gas Permeability: 8 E-12 m²/s ± 15%.
  • Carbon Dioxide (ISO 2782:1995): 4.67 E-17.
  • Moisture vapour transmission rate (BS 3177:1959(1995): 0.15 g/m² per 24 hours.

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