A pre-formed polyurethane shower hob, 1200mm x 75mm x 50mm, that replaces the old timber-and-screed hob build. Light enough to carry one-handed, cut with a hand saw, and ready for waterproofing membrane straight after fixing. Fix it to the slab, corner-seal it, and membrane over it. No rot, no swelling, no waiting for timber framing to be
