The place of drilling on slate tile depends upon the pattern you are going to make.
Slate roof tiles installation.
Do not eyeball the courses.
We are often asked by designers architects home and building owners what will a slate roof cost me.
Drill the slate roofing slate tiles.
Do not chalk on the slates themselves.
So first find the pattern and then drill holes on the slate roof tiles.
You can also consult the slate tile manufacturer regarding nail placing point on slate.
To install slate roof tiles correctly you ll need to stagger each course so the proper headlap which should be at least 3 inches for moisture protection is established.
Start from the bottom of the roof and work your way up staggering the joints between courses by a minimum of 1 inches.
Install every course of slates along a permanent red chalk line chalked on the surface of the roof that marks the top edge of the slates.
Generally speaking 20 degrees is the lowest advisable pitch for a slate roof depending on the size of the slates and how much that the roof is exposed to moderate weather conditions.
Find the central point of lower edge of roof.
When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps.