Having set out and nailed all the battens the setting out of tiles on each batten should be considered.
Setting out slate roof tiles.
The reason the starter course is laid face down is because the drip edge of the starter slate then merges flush with the drip edge of the first.
Another name for.
The next thing to do is to work out the spacing for the battens up the roof.
Margin this is the visible or exposed area of a slate from the bottom or tail of one slate up to the point the slate above overlaps it.
Each plain tile is 165mm wide and can have up to 3mm gap between them.
The slate or tile manufacturer or supplier will specify the spacing of the battens up the roof for the particular type of covering this spacing is referred to as the gauge the gauge may depend upon the pitch of the roof and the amount of exposure.