Frequently Asked Questions

Could I have rising damp?

While rising damp cannot be completely ruled out without inspection, the presence of mould almost always indicates condensation or high humidity, not rising damp. Mould rarely grows on groundwater from rising damp, meaning it typically won’t appear on clothing, wardrobes, or other furniture. If mould is present on indoor surfaces, high humidity is the more likely cause.

We open our windows all the time. Why do we still have a problem?

Opening windows alone is not a long-term solution. It can help briefly after generating moisture—such as during cooking or after a bath or shower—but it does not reduce humidity enough to prevent mould growth over time. Controlled ventilation, such as extractor fans, is far more effective.

Our walls are freezing. Is this causing the issue?

Cold walls are a common cause of condensation. Increasing ventilation is the best first step, as this may be enough to keep moisture under control. However, if cold surfaces continue to attract condensation, insulation improvements may be needed later.

Can cavity wall insulation cause damp problems?

When installed correctly, cavity wall insulation should not cause damp. However, it reduces natural ventilation within the property. For this reason, adequate mechanical ventilation—such as good-quality extractor fans—is essential to prevent moisture build-up after installation.

I’ve lived in the property for years and the problem has only just started. Why?

New or worsening condensation issues are usually linked to changes in lifestyle or alterations to the home. Common triggers include:

Working from home more often (especially since COVID), increasing time indoors

New windows or insulation making the home more airtight

The arrival of a baby (more baths, laundry, boiled kettles)

New pets

Changes in occupancy

These all increase indoor moisture levels, making mould more likely.

Should I accept that I just have to live with mould?

Absolutely not. Persistent mould simply means the underlying issue has not yet been identified or resolved. Once the root cause is found and addressed—whether ventilation, insulation, or moisture production—mould can be fully prevented. No one should have to live with mould.