Heating, ventilation & temperature

Draughts from rotten timber sash windows

Cold air coming through old timber sashes, misted glass and visible rot at the sills.


Recognise the problem

Cold air coming through old timber sashes, misted glass and visible rot at the sills. Patterns we see most often: ongoing damp or smell, visible damage to a surface or appliance, a problem that returns after each repair, or a hazard that has been reported but not resolved.

Likely causes

  • Perished timber at the lower sash and sill.
  • Failed draught-proofing and gaps around the frame.

What to document

  • Photos in daylight showing gaps and rot.
  • A note of how cold the room feels on windy days.

Reporting to your landlord

  • Report in writing and ask for a window survey.

Not sure what to do next?

Tell us what has gone wrong at home. We will review the information you provide and explain the next step for your tenancy.

Request a Quote

What help is available

  • Help pushing for a proper repair rather than more sealant.
  • Assistance with a complaint if repairs are delayed.

Common questions

Does this always lead to a compensation claim?

No. A recognised hazard is not automatically a claim – it depends on the duty, your tenancy, how long it has been unresolved and the evidence you can show.

Should I stop paying rent?

No. Withholding rent usually makes matters worse. Keep reporting the problem in writing and let us or an advisor review the next step.

What if my landlord says it is condensation and my fault?

That is a common response. Cause and liability are different questions. We can help you request a professional assessment.