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Darren’s insights

Discover the surprising truth - how blocking all draughts could actually harm your home.

As the colder months roll in, we find ourselves sealing our doors and windows to fend off the wintry chill. We strive to keep the warmth inside, all while grappling with the cost of living crisis and soaring energy bills. So, we take matters into our own hands, seeking ways to enhance the efficiency of our homes – but does it really pay off?



There is a tipping point, though. When a property is sealed up so tightly that there are no draughts, there is also no ventilation. Of course, this will mean the home is warm, but there are side effects of this.

Living in a property creates moisture, which becomes trapped without proper ventilation. As the air cools, the moisture transforms into liquid droplets that cling to your home's walls and belongings. This is how condensation leads to the dreaded mildew. Left unchecked, mildew leads to deteriorating decor and even worse, the growth of mold.

There are ways to handle this problem without leaving your doors and windows open all day, wasting the heat from your radiators and money spent on energy bills.

Extractor Fans

To combat excessive moisture, try to extract every bit of steam from the air in your kitchen and bathroom. By using lids while cooking and utilising extractor fans both during and after your bath or shower, you'll create an atmosphere with reduced moisture.

Trickle vents in the windows

By allowing a gentle breeze to permeate through, it helps whisk away excess moisture, preventing mildew from creeping in around your windows. And if you wake up to condensation in the morning, try remember to wipe it away - keeping that moisture from lingering and creating a cycle of evaporation and cooling.


If your loft space has an area that lacks sufficient insulation, you'll find a cool spot that sets it apart from the rest of the ceiling. This can lead to condensation forming in that specific area, creating the perfect breeding ground for unwelcome mildew to thrive.

Keep airflow around furniture

Don't keep your furniture tightly pressed against the walls—let the air flow! By creating a little space between your furniture and the walls, you allow the air to move freely, preventing mildew from growing or forming.

What if I still have condensation?

Every once in a while, a draught can actually be a blessing. It keeps the air flowing and circulating, preventing any unwelcome mildew surprises. Think about those summer days when the air is warm and inviting, and we happily throw open our windows and doors, letting that glorious warmth roam freely through our beloved homes - we don't experience any problems then!

If you are fortunate enough to have a cosy fully insulated home, and it is perhaps a little too protected from the elements - don't fret - you have options! Aside from cracking your windows daily, consider investing in a dehumidifier. These neat devices simply churn the existing air in your home, extract the moisture, and breathe out drier air back into the space. Depending on conditions, and the model, they can extract as much as 20 litres of water per day! Modern units are extremely energy efficient, quiet, and some even have HEPA filters, cleaning the air as it goes.

In order to maintain a clean and healthy home environment, it is important to consider following these simple tips to prevent mould from growing. By taking proactive measures, such as controlling humidity levels, and improving ventilation, you can effectively minimize the risk of mould formation in your living space. Taking these precautions will not only preserve the aesthetic appeal of your home but also promote the well-being of you and your family.


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