ADVANCED TESTING EQUIPMENT
ACCURATE DIAGNOSIS - NO GUESSWORK
£199 SURVEY FEE DEDUCTED IF YOU PROCEED
HONEST ADVICE - NO SALES PRESSURE
Mould Around Windows – What Causes It?
Mould forming around windows is a common problem in many homes, particularly during colder months. Window areas are often colder than surrounding walls, which can cause condensation to form when warm indoor air meets the cold surface.
Over time, repeated condensation can allow mould spores to develop around window frames, seals and surrounding plaster.
While mould around windows is often related to condensation, other moisture problems can also contribute to mould growth.
Why Mould Appears Around Window Frames
Windows are one of the coldest surfaces in a property, making them particularly vulnerable to condensation. When warm indoor air meets the colder glass or frame, moisture forms and collects around the window.
If this moisture is not removed through ventilation, mould can begin to grow on surrounding surfaces.
Mould Around Windows Caused by Condensation
Condensation is the most common cause of mould around windows. This problem often occurs in bedrooms, bathrooms and kitchens where humidity levels are higher.
Poor airflow, closed curtains and limited ventilation can allow moisture to accumulate around window frames.
Other Damp Problems That May Cause Window Mould
Although condensation is usually responsible, mould around windows may sometimes be linked to penetrating damp or poorly sealed window frames.
Defective seals, cracks in external masonry or damaged pointing can allow moisture to enter around window openings.
Black Mould Around Window Frames
Black mould is commonly found around window frames where moisture regularly collects due to condensation.
Mould Around Bedroom Windows
Bedroom windows are particularly prone to condensation because humidity levels increase overnight when people are sleeping.
Mould on Window Sills
Moisture collecting on window sills can also encourage mould growth, particularly where condensation regularly forms on glass surfaces.
When Window Mould Should Be Investigated
If mould continues to return after cleaning or spreads beyond the window area, it may indicate a wider damp or ventilation problem within the property.
A professional damp survey can determine whether condensation, penetrating damp or other moisture issues are responsible.
Book a Damp Survey for Window Mould
If mould is forming around windows in your home, Dampline provides professional damp surveys across Durham and surrounding areas.
Our surveys identify the cause of moisture problems so the correct solution can be recommended.
Book a damp survey today to investigate mould and condensation issues within your property.