Loft insulation is a product that reduces heat loss via the roof of a home. It’s installed between or above the joists in your loft, providing a barrier that traps more warmth within your home. Without insulation, up to a quarter of the heat from a home can be lost through the roof, resulting in higher bills and a chillier home.
It’s one of the simplest and least expensive methods for enhancing energy efficiency. After it’s been installed correctly, it will last for decades and require little maintenance.
How It Works
Heat tends to rise naturally, and in a home that lacks loft insulation, a great deal of that heat just goes straight out through the roof. Loft insulation works similarly to a blanket, keeping warm air confined within the living space. During winter, it keeps the home warm, while in summer it can keep it cooler by preventing too much heat from entering.
The most popular kind of loft insulation is mineral wool rolls, but there are alternatives such as rigid boards or blown-in for more difficult areas to reach. The product is typically fitted in two layers — one between and in between the joists, and one over the top.
Benefits of Loft Insulation
The most significant advantage of loft insulation is reduced heating costs. By limiting the loss of heat, your boiler doesn’t need to struggle quite so hard to heat your house. That means less energy is used, which also reduces carbon emissions — a plus for the planet as well as your purse.
Insulating your loft can also make your house more comfortable, with fewer cold areas and less heat loss upstairs. And if you’re planning to sell in the future, improved insulation can enhance your house’s energy rating, which could enhance its value.
Things to Consider
Before adding insulation, you’ll need to check whether your loft is easy to access and if it’s already insulated. Some older homes might have a thin layer that no longer meets current standards, so topping it up could still be worth doing.
The ideal thickness for mineral wool insulation is approximately 270mm. If you intend to store items in the loft, you’ll have to lift the floor joists and fit a boarded surface above the insulation — compressing it diminishes its effectiveness.
If your loft is damp or poorly ventilated, that needs to be addressed first. Insulating a damp loft can actually make things worse, so always inspect for leaks or mould signs prior to working on it.
Professional or DIY
Loft insulation is a task that most will undertake themselves if the loft space is easy to get to and there is no electrical or structural work involved. Packs of insulation are available at all DIY stores, and the task is relatively simple with basic equipment and safety equipment.
However, if your loft is hard to reach, has awkward spaces, or you’re unsure about wiring and ventilation, it’s best to use a professional. They’ll make sure the work is done safely and up to standard.
There may also be grants or funding available for insulation, especially if you’re on certain benefits or your home has a low energy rating. It’s worth checking with your local council or energy provider to see what help is available.
Loft insulation is an easy measure that has a significant impact. It saves you money, warms your house, and works for many years with minimal effort. If you do it yourself or employ a tradesperson, loft insulation is a wise investment that will repay dividends in the long term.
