InternationalLaying technique
- Rectangular roofings
- Rectangular double lap roofing (standard pattern) on the roof
- Roofing substructure
Roof battens, complete form work, nailable building boards, nailable masonry.
Fastening
Every slate shall be fastened with at least 2 slate-fixing nails or pins or a cramp hook when laying them on battens, or with a pointed hook. The stones on the verge or the hip shall always be fastened with 3 slate-fixing nails or pins.
Minimum lap
The third following course must lap the first one in accordance with the table.
Minimum overlap in mm of the third course over the first one in case of rectangular double lap roofing (standard pattern)
Roof pitch
Format
Standard roof pitch
Headlap in mm
Measurements and quantities per m²
Height and width in cm
approx. slate qty. per m² for 80 mm overlap (half format)
approx. kg/1000 slates.
slate quantity per crate
* required material for 60 mm overlap
Valleys
In case of valley roofing the "Rules for Roofing with Slate" [Regeln für Deckungen mit Schiefer], issued by the Central Association of the German Roofers' Craft e.V. [Zentralverband des Deutschen Dachdeckerverbands e.V.] shall be observed.
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