Preparing facades and roofs for winter

Should one clean the roof or facade before winter? Why? Product tips?


It can be a good idea to wash roofs and facades before winter, especially if you live in areas with harsh winters and heavy snowfalls. Here are some reasons why:

  • Snow load: If the roof is dirty or covered with moss, it can retain more snow and ice during the winter. This can increase the load on the roof and increase the risk of damage. By keeping the roof clean, you reduce this risk.
  • Icing: Dirt and moss on the roof can also cause icing, especially if meltwater cannot drain properly. This can lead to ice dams and leaks, which can be damaging to the roof and building.
  • Durability of the facade: Washing the facade can extend its life and preserve its appearance in the long term. Dirt, algae and moss can negatively affect the surface of the facade, and in cold climates they can also contribute to ice formation and frost damage.
  • Energy saving: A clean facade can also contribute to better insulation and energy efficiency, as dirt and moss can impair the insulating properties of the building materials.


Washing the roof and facade before winter is a preventive measure to avoid potential problems that may arise during the cold season. It is important to use appropriate cleaning methods and products to avoid damaging the surface, and it may be wise to hire professionals if you are unsure how to do this safely and effectively.

  • SPS Greenclean Facade - an alkaline product labeled with Good Environmental Choice that effectively dissolves greasy dirt such as traffic exhaust and air pollution, and is effective in washing away growth such as algae.
  • BCS Afrodite+ - an effective product against algae and lichen on all outdoor surfaces, e.g. roofs, facades and ground surfaces. Can be used both as a detergent and as a "treatment" where the agent is applied and the weather takes care of the rest.
  • BCS Dafne - a transparent diffusion-open impregnation liquid that provides effective protection against the penetration of driving rain, chlorides and dirt.