Implementation and maintenance


During periods of fog, persistent rain or melting snow the air just below the tiles becomes saturated with moisture and it is necessary to evacuate this moisture as quickly as possible.

For this purpose, you need to follow simple but mandatory rules.

  • Always ensure the free passage of air between the underside of the battens and any other area (such as plastic film, cardboard, asphalt felt, thermal insulation, etc ...) keeping an average 2cms of space (minimum).
  • Toujours réserver entre le dessous des liteaux et le dessus de tout dispositif éventuellement placé le long des versants (tel que film plastique, carton, feutre bitumé, isolant thermique, etc...)  un espace de 2cm au moins d'épaisseur moyenne afin d'assurer le libre passage de l'air sous les liteaux.
  • Provide an air entry on the lower and an air exit poitn on the upper part.
         In the case of roof work, take precautions so as not to deteriorate it.

Screens Underlayment:

They constitute the only effective protection against powdery snow, sub-roof screens have many other benefits:

  • Waterproof, protection from powder snow, soot and dust Improves thermal performance and protects the insulation
  • Improves the wind resistance of roofs
  • Protects against external intrusions : reduced the risk of birds or insects entering into the attic
  • Gives 8 days of protection to the construction site from water infiltration Contributes to the roof ventilation.


Maintenance :

Plant debris, moss, industrial dust, etc ... obstructing the flow and keeping the surface of the tiles abnormal humidity, affect the proper functioning and good conservation of roof tiles.


Regular maintenance is necessary.