Products Catalogue

Bituminous underlay for roof slates and tiles.

  • Strong and very resistant to nail tearing due to its polypropylene reinforcement.
  • Flexible.
  • Waterproof: due to the bitumen coating.
  • Easy to fix: red guide lines facilitate the location of the overlaps.
  • Absorbs wind loads: thus reducing wind uplift forces.
  • Gain in fixing time and economy of material: due to its width of 1.25 m.
Main uses
  • Fel’X is a flexible underlay for the protection of lofts and roof timbers from the risk of damage from water and the penetration of powder snow, soot and dust.
  • It also absorbs some of the wind loads and therefore reduces the wind uplift forces on the slates or tiles.
  • Fel’X may be used equally well in both new and renovation work.
  • Fel’X is not intended to be left exposed but will act as a temporary waterproofing for a few days prior to the fixing of the slates or tiles.
  • Fel’X can be installed by draping over the rafters in traditional roof constructions. It can also be fixed in conjunction with counter battens for improved wind resistance.
  • By fixing taut over rafters (with counter battens) or by draping over rafters (without counter battens).
  • Preservative treatments applied to timber that will be in contact with Fel'X must be compatible with bitumen.
  • Fel'X must be fixed in accordance with local practices and recommandations.
  • Adequate ventilation must be provided in accordance with local practices and recommandations.
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