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  • Writer's pictureSophie Baylis

Loft Conversion Ideas - tips to heating, lighting and ventilating a loft conversion

Updated: Mar 20, 2022

In desperate need of extra living space? Perhaps it’s time to tackle the clutter that has accumulated in your loft and covert it into an extra room. But before you do, be prepared to do plenty of reading and research says Johnpaul Manning, MD of Insulation4less. Read on to discover Johnpaul’s advise on how to heat, light and ventilate your loft room.


Q: Do I need to consider energy efficiency when converting my loft?

If you're looking at converting your loft, this also a great time to assess how energy efficient your home really is. A recent study found that a quarter of the heat generated in a home can be lost through a poorly insulated roof, costing homeowners upwards of £2,000 a year. To save yourself some money, consider adding some high-quality insulation to your walls during your conversion.


Q: Do I need to insulate my loft conversion. Who can advise me on the type of insulation I need?

If you hire a conversion specialist during the planning stages, they’ll be able to determine which kind of insulation best suits your needs and those of your property. Remember that insulation can last for up to 40 years, so while there might be some upfront costs, you’ll recover these in the future.


Q: Is it necessary to heat my loft conversion?

To answer this question it’s important to look at the purpose of your loft conversion. If the loft conversion is just going to be used as storage or isn’t in regular use, then opting to alter your entire heating system might not be necessary. However, if it's going to be in regular use (a new bedroom, bathroom, home office) then keeping it well heated is definitely needed.


Q: If I want to heat my loft conversion, is it a matter of extending my existing central heating system?

Extending your existing system might seem like the most obvious option, but it's also a huge undertaking, so it's important to weigh up the cost benefit. To start, check to see if your existing system is up to the task by finding its capacity - this can often be found either on the boiler itself, or in its installation guide. Next consider how many radiators you’ll need to heat the space.


Q: I can extend my existing heating system to heat my loft conversion. However, I don’t know if my existing boiler has the capacity to do this. How do I find out?

An easy quick calculation is to add up how many radiators are present in your property, plus any additions you’ll be adding to your conversion to find a rough estimate of total kW required:1 kW - for small radiators or towel radiators, 1. 5 kW - for an average sized radiator, 2 kW - for a large radiator. If you’re adding a bathroom you’ll likely need a 35kW boiler minimum before factoring in any additional radiators.


Q: I can’t extend my existing heating system to heat my loft conversion. What are my options?

If extending your existing heating system isn’t possible, it doesn’t mean your project isn’t viable - there are other options out there that could be a better fit. For example, electric options can be a great alternative. Electrical radiators can be added for a fraction of the cost, and can be connected to timers and home automation apps to make sure they’re being used efficiently. And tubular heaters are a compact and cost-effective way to boost background heat.


Q: How important is high quality loft insulation when it comes to heating a loft conversion?

Never underestimate the value of high quality loft insulation. A recent study by the Energy Saving Trust found that a quarter of the heat generated in a home can be lost through a poorly insulated roof, costing homeowners upwards of £2,000 a year. While the upfront costs might seem big, investing in insulation can add to the quality of your conversion and save you money in the long run. It can also last up to 40 years, which can go a long way in helping you future-proof your property.


Q: When it comes to lighting my loft conversion, is it a matter of extending my existing lighting circuit?

While extending your existing circuit is a definite possibility, there are a few things that should be considered. To start, you need to make sure that your existing electrics are working properly and meet current safety standards. If your wiring is out of date, then you might need to rewire your home before moving on to your loft conversion.


Once you’re sure your electrics are safe and up to regulation, then you should be able to safely extend the ring circuit and add plug sockets and light switches wherever you need them.


Q: How do I check that it is possible to extend my existing circuit?

While some aspects of loft-conversion projects are suitable for DIY work, electrical work should always be carried out by a Part P registered electrician to make sure the work is safe and in line with current regulations. Once your project is complete, make sure to do a site inspection carried out by a professional to get the final safety sign off to give you peace of mind.


Q When it comes to lighting my loft conversion, is it a matter of extending my existing lighting circuit?

While extending your existing circuit is a definite possibility, there are a few things that should be considered. To start, you need to make sure that your existing electrics are working properly and meet current safety standards. If your wiring is out of date, then you might need to rewire your home before moving on to your loft conversion.

Once you’re sure your electrics are safe and up to regulation, then you should be able to safely extend the ring circuit and add plug sockets and light switches wherever you need them.

Q: How do I check that it is possible to extend my existing circuit?

While some aspects of loft-conversion projects are suitable for DIY work, electrical work should always be carried out by a Part P registered electrician to make sure the work is safe and in line with current regulations. Once your project is complete, make sure to do a site inspection carried out by a professional to get the final safety sign off to give you peace of mind.


Q: I have included a bathroom in my new loft extension, what do I need to know about ventilation? Damp and condensation can cause havoc in any home in more ways than one. in the home. Trapped moisture can lead to mould, which can cause a lot of harm, not only to our properties but to our health as well. As a result, when it comes to adding a bathroom proper ventilation should always be top priority.


While natural ventilation through a window is the most obvious option, keeping it open can be a challenge, especially in the winter, and even if you do there’s the risk that moisture can build up over time. In short, adding an extractor fan can be an effective way to manage ventilation and prevent moisture build up without much hassle.


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