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How to Prevent Condensation In Your House

By Edited Aug 4, 2015 1 1

Condensation forming in your home can be a real nuisance. Not only does it mist up windows and leave water everywhere, it can damage your furniture and promote mould growth which is unsightly and unhealthy. Enforcing a few preventative measures can greatly reduce the amount of condensation that forms in your home and we shall have a look at some of these measures in this article. First of all though, let’s take a look at what exactly condensation is without being too technical.

What Is Condensation?

All the air that surrounds us and we breathe has water vapour in it, when this air comes into contact with colder surface than the surrounding air, the water vapour begins to condense onto the surface. This is why windows in particular are prone to condensation. The air in your house is generally warmer than the outside air, warm air has a higher capacity to hold water vapour, when it hits a cold window the water vapour is released in a process similar to that of evaporation, but in reverse.

Condensation occurs on many surfaces but we notice in particular when it forms on windows because they don’t absorb the moisture. If a building isn’t insulated correctly condensation can occur on walls and other cold surfaces and may not be noticed until mold sets in.

How Can You Prevent Condensation?

Preventing Condensation
The best way to prevent condensation is to try and decrease the amount of water vapour in the air. You will notice when you take a shower that the bathroom mirror and window steams up. This is because the warm and wet conditions in the shower room are building up the water vapour in the air. The easiest way to prevent this build up it to open the window slightly this way the water vapour will be drawn out into the cold air. Ventilation is a key point to help prevent any build up of condensation. If you do not ventilate a room then there is nowhere for any vapour to escape so it inevitably forms on surfaces inside the house.

If you ever dry your clothes on a radiator inside your home then this can be another big source of moisture in the air. If at all possible wait for a pleasant day to dry your clothes outside or use a properly installed clothes dryer that captures any moisture (or diverts it outside) instead of releasing it into the house.

As condensation forms on cold surfaces another simple solution is to keep your home adequately heated. If all the internal surfaces are warm then the condensation will not be able to form on them so the only escape will be into the cold air outside.

Lastly if condensation is a real problem in your home you may want to consider investing in a dehumidifier to actively reduce the amount of moisture in the air. A dehumidifier will suck in air remove the water vapour and vent dry air back into the home. There are many varieties according to the size of the room needing dehumidifying and also capacity. If you have ever seen one in action you will know they reduce huge amount of water from the air, we are talking about upwards of 10 litres a day. Investing in a dehumidifier may be a costly one off purchase but you will drastically improve your quality of life by having it.

Hopefully if you do have a condensation problem by implementing a couple of these tips you will reduce the amount that forms and be more comfortable in your home.



Feb 22, 2011 3:01pm
With houses being built so tight now, you really do need to deal with air flow and moisture. Great article!
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