The top covering asphalt roofing felt W / 400 belongs to the group of traditional asphalt felt. It is roofing felt based on construction cardboard with a double-sided asphalt coating (oxidized asphalt with mineral filler). The top side is covered with coarse mineral sprinkles, the bottom side is covered with fine mineral sprinkles. It is used to make the top layer in multilayer waterproof roofing. Layed with glue in asphalt.

Information for the user

• laying conditions
  • roofing felt should be laid at a temperature not lower than + 5 C,
  • roofing felt should not be laid in case of wet roof surface, its icing, during precipitation in atmospheric conditions and in strong winds
• conditions of use
  • waterproofing insulation using roofing felt W / 400 should be carried out according to the technical design developed in accordance with applicable building regulations, taking into account the detailed guidelines contained in the manufacturer's instructions
• storage
  • roofing felt rolls should be stored indoors,
  • Protect against moisture and sunlight or sources of heat
  • rollers should be placed on uneven ground in upright position in one layer
• transport
  • roofing felt rolls should be transported in covered means of transport,
  • should be laid in one layer in an upright position
  • should be laid in a way that prevents them from moving during transport