I have re-slated a stone outhouse - an old outside toilet.
The building is wedge shaped, the shape of a lean to, but is actually free standing. How do I finish the high point of the roof, the length that would join the house wall if it was a lean to?
I have fitted a length of wood to support the top edge of the highest row of slates but it is exposed to the weather. I imagine a piece of metal that is screwed to the piece of wood and loops over the top slates to create a weatherproof seal. Is there such a thing? I can't use lead; it would be gone by tea time.
If I use roofing felt or the like how do I fix it securely to the slates?