g01 - Building Permit in Belgium

Description.

For roof and tiles in Belgium regarding the demo site located to Walloon region, there is the ‘Code Wallon de l’aménagement du territoire, de l’urbanisme, du patrimoine et de l’ energie’, Decree of April 19, 2007. Article 419c of the General Provisions states that main volumes shall comprise a roof with two slopes of same inclination and same length and secondary volumes shall comprise a sloped roof with either one or two slopes. Roof should be in harmony with those of traditional local constructions and should not include projective elements which exceed the main volume. Article 420b of the General Provisions, states that roof slopes should be between 40 and 45 degrees excluding possibility of flat roofs. Article 420c of the General Provisions states that the covering material for roofs must be either natural/artificial slate or grey/black tiles.

Regarding the use of photo-voltaic modules, there is not a specific permit but the regulation from the ‘Code Wallon de l’aménagement du territoire, de l’urbanisme, du patrimoine et de l’ energie’ says that the installation of PV solar modules do not need an urbanism permission no matter the shape, surface or thickness unless one condition of three is fulfilled:

  • In sloped roof, the overhang should be less or equal to 0.3 m
  • In flat roof, the vertical overhang id 1.5 m and max slope of a module 35 degrees

If modules are fixed to the elevation, the overhang to be between 1.20 m and 1.50 m and slope 25 to 45 degrees

There are specific permissions for every region:

  • Walloon region
  • Brussels capital region
  • Flemish region