Always repair with the material used to build with

[Lisabet 1,016]

Went to repair a slate shingle roof to find that it doesn't use slate shingles which are 7.5kg to repair,  but slate shards which are 20kg to repair.  I know most things repair with the material used to create, for example you repair a stone wall with a stone brick, a rounded stone wall with a rounded stone brick, I suggest you repair roofs the same way.  Thatch for thatch roof instead of plank, pottery shingle instead of clay for pottery roofs, etc.  Gets a bit tricky when you get to the floors, using bricks to repair slab floors but I think slabs would be good too tbh.