The hidden damp risk lurking in Britain’s bungalow boom

As demand for bungalows surges across the UK, a leading damp specialist is warning buyers to watch out for a hidden threat – condensation.

According to new analysis by Timberwise, online searches for bungalows have risen by 53% over the past two decades, reflecting growing demand among downsizers, retirees, and families looking for single-storey living.
But experts say this much-loved property type carries unique risks that are often overlooked during surveys.

While issues such as rising or penetrating damp are well known, condensation is by far the most common problem. It develops when warm, moist air hits cold surfaces, creating water droplets that can lead to mould, timber decay, and long-term structural damage.

BUNGALOW PROBLEMS
George Edwards, Managing Director of Timberwise
George Edwards, Timberwise

George Edwards, Managing Director of Timberwise, says: “Bungalows can be just as resilient as any other home if properly ventilated and well maintained.

“But problems tend to arise when air circulation is poor or damp proofing has failed.”

Because bungalows are single-storey, airflow is more limited than in multi-level homes – and older properties often lack modern ventilation systems.

“In winter, many residents keep windows shut to retain heat, especially older homeowners,” adds Edwards. “That traps humidity inside and accelerates condensation.”

TELL-TALE SIGNS

The problem is compounded in homes where extractor fans are missing or broken, trickle vents are blocked, or air bricks have been sealed over.

Edwards warned that buyers should look carefully for tell-tale signs such as black mould around windows, flaking paint, or musty odours, which may indicate persistent condensation.

“A failed damp proof course is relatively rare in bungalows built after the 1930s,” he says, “but condensation can develop quickly if ventilation isn’t adequate.”

Persistent issues may require mechanical solutions such as positive pressure ventilation systems, which circulate fresh air and expel moist air.

Edwards says: “Condensation doesn’t have to be a deal-breaker. With regular inspections, early repairs, and good airflow, bungalows can remain warm, dry, and healthy all year round.”

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