Skip to content

Is the outside of your building letting damp in?

Six quick questions about your gutters, roof, walls and fascias. You'll get a low, medium or high exterior risk, and what to do next.

  1. 1. Do the gutters overflow or drip in heavy rain?
  2. 2. Can you see moss on the roof?
  3. 3. Are there stains or green streaks on the walls under the gutters?
  4. 4. Are there damp patches on inside walls or ceilings next to an outside wall?
  5. 5. Is the render cracked, or turning green?
  6. 6. Are any fascias loose, rotten or pulling away?

Answer all six to see your result

0 of 6 answered.

This is a quick guide, not a survey or a diagnosis, and it doesn't cover health. Damp can also come from ventilation, heating or the ground.

How we work this out

Each sign of water getting in from outside scores a point or two: overflowing gutters, staining under the gutter line and failing fascias score highest, because they put water straight onto the wall. Damp inside next to an outside wall, together with any outside sign, always comes out high: that pattern is typical of penetrating damp.

Managing homes?

Under Awaab's Law, social landlords have fixed timeframes for dealing with damp and mould. Our guide covers the exterior causes to rule out first.

Book a free survey

Tell us about your property and we'll arrange a visit to survey it and give you an exact price. It costs nothing.

Free and no obligation.