Minimum DPC height above ground level
The 150mm rule, what counts as finished ground level, and the site conditions that quietly bridge it.
3 key figures · reviewed 2026-08-21
Wall tie spacing in cavity masonry
The standard grid, the tighter spacing at every opening, and the installation faults that make correct spacing worthless.
4 key figures · reviewed 2026-08-21
Pre-plaster inspection checklist
The last honest look at everything that gets buried. Once boards are on, every one of these becomes a demolition job.
3 key figures · reviewed 2026-08-21
Cavity trays: where they go and how they fail
A tray without stop ends is a gutter with the ends cut off. The details that decide whether water leaves the cavity or enters the house.
3 key figures · reviewed 2026-08-21
Private stairs: rise, going and headroom
The geometry is simple and unforgiving. Get the floor-to-floor dimension wrong and the whole flight is wrong.
5 key figures · reviewed 2026-08-21