Why does condensation get worse in winter?

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What causes condensation?

Condensation occurs when warm, humid air comes into contact with a cooler surface, resulting in the formation of water droplets. This is because once the warm air touches a cooler surface, it loses heat and therefore cannot hold as much moisture.

Why does condensation appear on windows first?

Glass is a relatively poor insulator; a double glazed window has a resistance to heat flow rating of 2, which is low compared to a wall with a rating of between 11-20. This means that the surface temperature of your windows is often lower than the air within your home, so you are more likely to notice condensation on the windows of your bedroom, bathroom or kitchen before anywhere else.

So,why does winter make condensation worse?

By making our homes more thermally efficient and draught resistant through the installation of high quality windows and doors, we eliminate opportunities for hot, humid air to escape the building.

During the summer, we are more likely to invite fresh air into our home and with warmer outside temperatures, condensation isn’t able to form. In winter however, we prefer to keep our windows and doors closed, leading to potential ventilation issues.

Condensation is not only unsightly, but if it happens frequently it can lead to a number of damp problems, including mould growth, wood rot, peeling plaster and a musty odour that will need to be addressed.

How can you prevent condensation in winter?

Your number one concern when tackling condensation should be lowering the moisture levels in the air and improving ventilation. Here are a few steps you can take to help reduce the effects of condensation in winter:

  • Ensure that you have an effective extractor fan installed in both your bathroom and kitchen
  • If you can bear it, open a window every now and then!
  • Dry your clothes outside, or dry them in a well ventilated room with open windows
  • Leave your extractor fan on for 10-15 minutes after you’ve finished cooking
  • If you do notice condensation on your windows, wipe it away with a cloth
  • Invest in a dehumidifier to remove moisture from the air

If you are struggling with condensation in your property, we can help! Our team of damp experts for Dorset & Hampshire have years of experience handling all kinds of ventilation problem and can find you the perfect solution, as well as undertake any necessary refurbishment work required as a result of damp. Contact us today on 01202 737739 to discuss your condensation problem with us.

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