This rag slate roof takes knowledge and expertise to put together. See how all the slates are slightly different lengths and sizes? This is why specialist knowledge is needed to slate with irregular slates. This project also took great skill; there was a negative kick (which means that are convex bumps in the roof). Look at the roof; can you see the two slight indentations? Because this was a listed building, we had to use the original timber, which means that negative kicks may happen (original timber is often less straight and smooth). When you’re working with a negative kick, you have to grind the slates to be slightly thinner, so they still fit snugly onto the roof, and don’t exacerbate any dips or bulges, which could cause leaks and gaps.
If you have a listed building (with a wonky roof!), get in touch with Bristow & Reeve by email or by phone.