| The characteristic feature of the French roof is the square lozenge effect of the slates. This design requires the roof to be laid using nails. There is, however, a variant of the “French” slate, which has a horizontal lower edge. This allows the roof to be laid with hooks. Starting from the lowest point (the eaves), with slates of a different dimension from the others, each one is laid so that it covers the slate underneath by a half. In this way, the finished roof is slated with a double overlay. |
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|
H
|
L
|
S
|
|
57
|
57
|
0.5
|
|
57
|
40
|
0.5
|
|
57
|
30
|
0.5
|
|
57
|
20
|
0.5
|
|
57
|
57
|
0.5
|
|
57
|
30
|
1
|
|
40
|
30
|
1
|
|
57
|
40
|
1
|
|
40
|
30
|
1
|
|
30
|
30
|
1
|
|
50
|
50
|
1
|
|
40
|
20
|
1
|
|
misure in cm
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|
H=altezza(height)
L=larghezza(width)
S=spessore(tichkness)
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- 40 x 40 slates, or 30 x30
- 1cm thickness fixed with cement and zinc or stainless steel nails
- Pendenza massima
40 % (40 x 40)
45 % (30 x 30)
- 12 (40 x 40), or
25 (30 x 30) slates are required to cover 1 m2 of roof
- the weight per m2 using slates of 5mm thick is 45 kg (40 x 40), or
50 kg (30 x 30)
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