Updated for the 1 May 2026 law change: Renters' Rights Act 2025 now in force
Reviewed for the Renters' Rights Act · Updated 20 July 2026

Damp and condensation: diagnosis before blame

Damp arguments run on a single confusion: treating all damp as one thing. There are three kinds, with different causes and different responsibilities.

The three kinds

Condensation honestly allocated

Tenants control moisture production and ventilation habits; landlords control whether the building can cope: extractor fans that work, trickle vents, adequate heating provision, insulation of cold spots. The law's direction is clear: fitness for habitation is the landlord's duty, and blaming lifestyle where the building lacks basic ventilation does not survive scrutiny. Fix the fabric, then talk about drying washing.

The response clock

Reports of damp and mould now sit under the Awaab's Law regime: investigate within fixed timescales, written findings, prompt works, 24 hours for emergencies. The practical sequence: acknowledge in writing, inspect quickly, diagnose which of the three kinds you face, remediate the cause not just the symptom, and document everything. Mould wash without fixing the cold bridge is a photograph of the same wall next winter.

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Frequently asked questions

Is condensation the tenant's fault?

Only partly, and only where the building gives them a fair chance: working extraction, ventilation and adequate heating. Fitness for habitation makes persistent mould the landlord's problem to solve.

How quickly must a landlord respond to mould?

Under the Awaab's Law regime, within fixed statutory timescales: prompt investigation, written findings and swift works, with 24 hours where health is at imminent risk.