Slate
Hooks
Craincourt Limited, offer a variety
of Slate Hooks including
- Point Driven Slate Hooks
These hooks are fixed in the lathing or batten. The end is pointed,
bent over 20mm with an angle of 70 degrees. Manufactured from
copper wire 3mm in diameter.
- Batten Clips
These hooks are hooked to the lathing. The end is bent twice through
90 degrees and then smartly straightened. The height of the clip
is equal to the thickness of the lath and the slate. Manufactured
from copper wire 3mm in diameter.
Please contact us for pricing or
request more information through
this web site.
Hook Calculations
For Square or Right Angled Slates 30x30, 40x40, 15x30, 20x40, 30x60,
| Type
Of Roof |
Declivity
% |
Grades |
Hooks
|
| Type A* |
Type B* |
| slope |
47 to 275 |
25 deg to 70 deg |
110mm |
90mm |
| vertical slope |
+275 |
+70 deg |
50mm |
50mm |
*A= windy + rainy slope
*B = under 8mm and no rainy winds
Formula p=(l-r)/2
p = margin (visible part of the slate on the roof
l = height of slate
r = lap of a third row over the first one
Half the difference between the height of the slate and the lap
gives the height of the margin
|
