It’s easy to forget about your loft, especially if it’s inaccessible or only used as a place to shove the Christmas decorations. However, with energy prices climbing year on year, many Britons are starting to pay attention to their draughty roof spaces. After all, heat rises so unless you want your heating bill soaring up into the rafters, it’s time to think about insulation...
Why you need to insulate your loft
The main reason most homeowners insulate their lofts is to stop heat lose. In uninsulated homes, a quarter of lost heat disappears through the roof. So by securing your loft, you’ll not only stay toastier in the winter, you’ll also save money in the long run when those monthly bills start to shrink.
It’s also worth mentioning that many current and prospective homeowners are becoming eco-conscious. They want their homes to be energy efficient, and any prospective buyer could be put off by home lacking in proper insulation.
What materials to use
When it comes to picking your materials, the most important thing to consider is it’s thermal performance. In insulation materials, this is described as its thermal conductivity, and is measured through its ‘K’ value. The lower the K value, the more heat the product will hold.
At minimum, we recommend using materials with at least a value of 0.16 W/m²K.
Wood-wool, this hybrid is made almost entirely from waste wood products. Unlike a lot of insulation, it’s very stiff, so can be a good option if your project requires sturdier stuff. K value around 0.038 W/mK.
Recycled newspaper, such as Warmcel. This isn’t actually bits of paper, but actually their fibres. It’s very cost effective, so often used for large loft spaces. However, it does have a shorter lifespan than other options. K value around 0.035 W/mK.
Hemp quilts, these tend to combine both hemp and recycled cotton but can vary. It’s a great eco option, as the plant grows quickly, and it also helps reduce carbon dioxide in your home - nice! K value around 0.039 W/mK.
Sheeps wool, which is basically what it says on the tin, and comes from the unwanted fleeces in the wool industry. K value around 0.038 W/mK.
Now you may have noticed that most of these don’t meet our suggested minimum K value. That’s because these materials, like most you’ll use, need to be layered in order to get the ideal results.