Wrexham covers LL11, LL12 and LL13 and is the largest town in North Wales, sitting just inside the Welsh border south of Chester. Its Victorian terrace inner-town stock, particularly around Rhosddu Road, Ruthin Road and the grid streets off King Street, is the densest period housing in North Wales outside Cardiff. The outer residential areas from Rhosnesni through Llay and Coedpoeth shift to mid-century semi-detached and post-war estate housing that runs all the way to the edge of the coalfield villages in the LL12 and LL13 postcodes.
The inner-town Victorian terrace follows the same pattern as Birkenhead and Bootle: original Welsh slate, chimney-heavy, with lead step flashing that has been patched and re-patched until it needs a proper Code 4 renewal. The slate on these properties is often Ffestiniog blue rather than Penrhyn, which is slightly thinner and more prone to delamination on north-facing slopes. We match like-for-like using Ffestiniog or Llechwedd material when replacing individual slates rather than mixing grades.
Building notices in Wrexham County Borough go to the Local Authority Building Control department, not to an approved inspector, as the default route for most residential roofing work. Welsh Ministers' building regs apply rather than English regs, though the practical differences for a straightforward re-roof are minor. The Chester Team covers Wrexham on 01244 879719.