home art

The pre-winter damp checklist for London homes

Gutters, extractor fans, trickle vents and heating patterns — a 30-minute check.

2 min readUpdated October 2026England

Thirty minutes in October

  • Clear gutters and check downpipes discharge away from walls.
  • Test every extractor fan: a sheet of paper should hold against the grille.
  • Open trickle vents on all windows.
  • Check the ground outside is at least 15 cm below the damp-proof course.
  • Look for cracked render and failed pointing on the weather side.
  • Set heating to a low constant rather than short bursts.
  • Move furniture 5 cm off external walls.
  • Plan where clothes will dry — not on radiators in closed rooms.

What Damp Check adds

If any of these reveals a problem, a Damp Check tells you whether it is a quick fix or a package job.

General information for England, not advice on your property. Rules change; we check the current position in every report.

Damp Check

Stop painting over mould. Find the real cause and fix it for good.

See Damp Check