Property experts are urging homeowners in Wales to inspect their double-glazed windows this autumn, warning that internal condensation could be a sign of a broken seal letting cold air into the home.
With autumn now underway, attention is turning to home upkeep. Although temperatures have not yet dropped significantly, experts say being well-prepared is essential before the cold truly sets in.
Even after heating is turned on in the evenings, a home can still feel far from warm. According to experts, one very common feature could be the hidden culprit.
What Causes Internal Condensation?
Condensation is more likely to appear on glass surfaces during colder months, as warm indoor air meets cool glass and forms water droplets. If left unattended, this can lead to damp and mould issues. However, condensation forming between the panes of glass is a different concern.
Experts at National Plastics have urged homeowners to examine their windows closely for internal condensation, as it could indicate that they are inefficient and unlikely to keep out the winter chill. One of the main causes of condensation within a window is a failed or damaged seal. If the window is not properly sealed, warm air can circulate through double- or triple-glazed units. Once this air comes into contact with the cooler windowpane, it turns into moisture and causes condensation.
A broken seal allows cold air into the home, meaning money is wasted attempting to heat it. Condensation can also damage windows, discolour the frame, and leave the room looking unsightly.
What to Do If You Spot Internal Condensation
If internal condensation is spotted, a professional will most likely need to evaluate the extent of the damage. If the seal around the window is broken, it can be replaced. Windows can also be re-gassed to help prevent condensation from forming.
The only lasting solution to eliminate condensation build-up is to have the glass replaced, though not the entire window, according to experts at Grabex. They said: "In many cases, this is a fault which is covered by manufacturers' guarantees, usually up to 10 years. New units are gas-filled and warm-edge sealed to restore full insulation."
They added: "Installation is quick, clean, and far cheaper than replacing the entire window system."
Some circulating tricks claim to eliminate internal condensation, such as using a hairdryer or drilling small holes in the glass, but these will not be effective in the long run, and an expert inspection is recommended instead.
