How To Set Out A Slate Roof
Alternatively you could use a 12 inch high starter slate thereby guaranteeing a 3 5 inch headlap on the starter course and an 8 5 inch exposure on all field slates.
How to set out a slate roof. The exposure on the first course of slate must instead be dropped to 7 inches in order to create the 3 inch headlap on the starter course. Run a string up the edges of the roof to give yourself a straight edge to follow when laying the slate tie the string to temporary nails or chalk lines up the roof edge to align the inside edge of the slate in order to leave a one inch overhang on the outside. Roof battens and gauge the gauge is the space between the roof battens this will set the overlap of your chosen slate in most cases. Although a slate roof is initially quite costly it will often last for a lifetime and beyond.