3.2 – Roof details and joints – 3. Ridge and angle (roof ridge) 231 Roof overlap at the connection welt ≥ 100 mm with connection height depending on the pitch slope: • slope ≥ 20° = height ≥ 40 mm; • slope< 20° = height ≥ 60 mm. Height of the connection depending on the pitch slope: • slope ≥ 20° = height ≥ 40 mm; • slope< 20° = height ≥ 60 mm. * Ventilated ridge with metal support substructure for ventilated roof with stratigraphy made of non-combustible materials Ventilated ridge in a direction with closure at a distance from the side bargeboard ≥ 30 ≥ 40 Movement space to compensate the thermal expansion of the sheets; a value of ≥ 20 mm is necessary with sheet lengths of more than 10 m. ≥ 15* ≥ 15* 45 65 ≥ 100 ≥ 100 ≥ 250 ≥ 100 ≥ 40 ≥ 60 ≥ 30 ≥ 30 3° 3 4 EXCERPT
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