Flat Roof Window Condensation

The problem however usually isn t the roof window.

Flat roof window condensation.

You may notice condensation on your rooflight window because warm air which holds more moisture tends to rise and then liquefy when it comes into contact with a cool surface. It s the excess moisture in the room. Over time this excess moisture can lead to the unseen decay in roof timbers and fixings. Condensation is usually more noticeable on roof windows and flat roof windows because warm moist air rises to the ceiling.

Condensation builds when there s an excess of moisture in the air. Reducing moisture can be achieved by completing actions such as using extractor fans when cooking drying clothes outside or in a tumble dryer or opening roof windows when possible. Condensation is more prevalent in new homes. Interstitial condensation creates structural damping and subsequent damage that occurs when moist air penetrates inside the hidden space within an enclosed wall roof or floor cavity of a home.

Flat roofs and low slope roofs also face potentially serious condensation problems that can in turn lead to costly rot or mold damage in buildings. Our photograph at left shows severe alligatoring on a nearly flat low slope roof that also was relying on tar and roof cement to try to stop parapet wall leaks. This means they are cooled considerably more than vertical windows and due to the fact that warm air rises condensation will form on the glass of a roof window before a vertical window in the same environment. When there is a big temperature difference between the outdoors and indoors like during winter this can result in condensation on windows.