Square double roofing
SQUARED DOUBLE ROOFING 11
Among the various types of slate roofing, this is one of the most popular because it is halfway between the triple “super-strong” and the French roofing, particularly light. Even maintaining the characteristics of being relatively light, typical of double roofing, due to the 11 cm. overlap on the 3rd row it guarantees resistance to the wind, snow and ice similar to that of triple roofing. The design, typically geometric, creates parallel horizontal lines and allows the heterogeneous insertion of a typology of roofs with slopes in various architectonic and environmental contexts.
CHARACTERISTICS
- Slate slabs 57 x 30 cm, 9/10 mm thick,
lopped off on the short side - Fixing: 11 cm hooks in stainless steel or
copper, 3 mm diam., better if 4 mm diam.
SUITABLE FOR ROOFS WITH A PITCH GREATER THAN 40%
| INSTALLATION NOTES |
| In the enlargement: detail of the copper riser that prevents water seepage. A – slab length = 57 cm B – slab width = 40 or 30 cm C – slab to cover the width + 50% of “B” width D – starter slab length = 34 cm E – exposed slab length = 23 cm F – vertical lath distance = 60/70 cm G – size of horizontal lath = 4 x 3 cm (starter shim 4 x 4) H – length of hook = 11 cm P – horizontal lath gauge = 23 cm Requirements for covering 1 sq. m. of roof: -10 slate slabs 57 x 40 cm + 10 hooks -14 slate slabs 57 x 30 cm + 14 hooks Total weight per 1 sq. m. of roof = 60 kg (with 57 x 40 or 57 x 30 slabs, 10 mm thick) TOTAL THICKNESS OF SLATE COVERING = 20 / 30 mm |
