Thanks for clarifying, Nick. I suppose there is some logic in going by the exposed area - after all this is what counts, and will need to be considered when one reckons up how many tiles will be needed for a roof of given dimensions.
Very valid point about leaks manifesting at some point distant from the point of ingress, due to running along felt. I am no roofer but a householder and I have seen this sort of thing myself.
Thanks for clarifying, Nick. I suppose there is some logic in going by the exposed area - after all this is what counts, and will need to be considered when one reckons up how many tiles will be needed for a roof of given dimensions.
Very valid point about leaks manifesting at some point distant from the point of ingress, due to running along felt. I am no roofer but a householder and I have seen this sort of thing myself.
