Position the first roll of underlayment at one side of the roof perpendicular to the lower edge the eave of the roof.
How to fit roof slates.
Nail the vent material to the furring strips.
Before installing them snap a chalk line so that they can overhang the drip edge by one inch.
Step 3 starter strip.
When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps.
Step 1 drilling the tiles.
The supplier of the slates should recommend the spacing up the roof between the battens known as the gauge this usually varies according to the size of the slates the pitch of the roof and the degree of exposure.
First you need to install starter shingles.
You will need longer nails when installing ridge slates over vent material.
You ll need to do this for.
Step 5 staggering courses.
The gauge is in fact the same as the margin which is the length of the slate exposed.
Step 4 first course.
These are made by removing 6 inches from the top of the standard 12x18 inch slates.
These slate shingles are then trimmed into particular shapes usually punched for nail holes and are then ready to be installed on a roof.
The starter course should be laid back side facing up to allow the edge bevel to merge flush with the edge bevel of the first course which is laid back side facing down as are all other slates on the roof except the starter course.
Each slate tile needs to have a hole drilled through it so it can be nailed to the roof.
Install ridge slates and flashings in the same manner as installing slate hips except ridge joints should be caulked.
Step 2 marking.
11 lay your starter slates back side up.
The stone is dug or quarried from the earth brought to the surface then hand split with a hammer and chisel into thin sheets about a quarter of an inch thick.
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.