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  • Writer's pictureDanny Mullins

How to Keep Your Loft Conversion Warm in the Winter

As the winter months approach, the need to keep our homes cosy and warm becomes paramount.

This is especially true for loft conversions, which can often feel the chill more than other parts of the house.

But fear not, there are numerous ways to ensure your loft conversion remains a snug and inviting space throughout the colder months.

In this blog post, as an engineer offering air conditioning for loft conversions, I will explore a variety of methods to keep your loft conversion warm in the winter.

Understanding the Importance of Insulation

Before we delve into the specifics of how to keep your loft conversion warm, it's crucial to understand the importance of insulation. Insulation acts as a barrier, slowing the transfer of heat and helping to maintain a comfortable temperature within your loft conversion.

Without proper insulation, heat will quickly escape through the roof, leaving your loft conversion cold and draughty. This not only makes the space uncomfortable to use, but it can also lead to increased energy bills as you attempt to heat the space.

The Different Types of Insulation

There are several different types of insulation available, each with their own pros and cons. The most common types include blanket insulation, loose-fill insulation, and spray foam insulation.

Blanket insulation, often made from fibreglass, is the most commonly used type of insulation in homes. It's relatively inexpensive and easy to install, but it can be less effective than other types of insulation.

Loose-fill insulation is made from small particles of foam, fibre or other materials. It's more flexible than blanket insulation, making it a good choice for irregularly shaped areas. However, it can be more expensive and may require professional installation.

Spray foam insulation is a more modern type of insulation that's sprayed into place. It expands to fill gaps and can provide a higher level of insulation than other types. However, it's also the most expensive option and requires professional installation.

Effective Heating Solutions for Loft Conversions

Once your loft conversion is well-insulated, the next step is to consider your heating options. There are several different ways to heat a loft conversion, and the best option for you will depend on your specific needs and circumstances.

Central heating is the most common form of heating in UK homes, and it's likely that your loft conversion will be connected to your existing system. However, depending on the size and layout of your loft conversion, you may need to consider additional heating options.

Air Conditioning

Air conditioning is often associated with cooling down a room, but nowadays, most air conditioning units contain heat pumps too. So, instead of only blowing out cold air, it can also blow out warm air. To install one of these units, it's simplicity is more complicated that an electric radiator, but less complicated than underfloor heating.

We recommend clicking over to our air conditioning for loft conversions page for more information.

Underfloor Heating

Underfloor heating can be a great option for loft conversions. It provides a consistent and even heat across the entire floor area, making the space feel warm and cosy. There are two main types of underfloor heating: electric and water-based systems.

Electric underfloor heating uses a network of wires to heat the floor. It's relatively easy to install and can be more cost-effective for smaller areas. However, it can be more expensive to run than a water-based system.

Water-based underfloor heating uses a network of pipes to circulate hot water under the floor. It's more efficient than electric underfloor heating and can be connected to your existing central heating system. However, it's more complex to install and may require professional installation.

Electric Radiators

Electric radiators can be a good option for loft conversions, particularly if your existing central heating system isn't sufficient. They're easy to install and can be controlled independently of your central heating, giving you more flexibility.

Modern electric radiators are highly efficient and can be programmed to heat your loft conversion at specific times. However, they can be more expensive to run than central heating, so it's worth considering this before making a decision.

Maximising Natural Light and Heat

Another important factor to consider when trying to keep your loft conversion warm is the use of natural light and heat. By maximising the amount of sunlight that enters your loft conversion, you can help to naturally heat the space.

Skylights and Roof Windows

Installing skylights or roof windows can be a great way to increase the amount of natural light in your loft conversion. Not only does this make the space feel brighter and more spacious, but it can also help to naturally heat the space.

During the day, the sunlight that enters through the windows will help to warm the space. And at night, the windows can be closed to help retain the heat. However, it's important to ensure that any windows are well-insulated to prevent heat loss.

Solar Gain

Solar gain refers to the increase in temperature that a space experiences as a result of sunlight. By positioning your loft conversion to maximise solar gain, you can help to naturally heat the space.

This can be particularly effective in loft conversions with large windows or skylights. However, it's important to consider the potential for overheating in the summer months and to install appropriate shading solutions if necessary.


Keeping your loft conversion warm in the winter doesn't have to be a challenge. By ensuring your space is well-insulated, considering your heating options, and maximising natural light and heat, you can create a cosy and comfortable space that can be enjoyed all year round.

Remember, every loft conversion is unique, and what works for one may not work for another. It's always worth seeking professional advice to ensure you're making the most of your space and keeping your energy bills to a minimum.

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