How Does Loft Insulation Work?

The purpose of loft how does loft insulation work is to trap warmth from the rest of the house, keeping rooms a comfortable temperature for longer. This reduces heating bills significantly and helps to lower your carbon footprint. It also prevents heat from the hotter outside temperatures seeping into the property, which is why many homes are now insulated.

Insulating the roof space of your home is a relatively simple process. It involves adding material such as mineral wool, cellulose or fibreglass to the floor of the loft to keep the warmth in and the cold out.

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Heat escapes from homes primarily through the roof due to the second law of thermodynamics, which states that hotter things are always trying to redistribute their warmth to colder areas. In an uninsulated loft, this means warmth can escape through the ceiling into the roof space and out to the atmosphere, which is a huge waste of energy.

Most types of loft insulation work in the same way, but there are differences between them. The most common is mineral wool, which is made from melted rock or recycled glass spun into a fibre-like material. It can be fitted in rolls or blown into place using a machine. Other options include cellulose, which is made from recycled paper, and wet-sprayed insulating foam such as Solarshield.

It is important that you clear away all items from your loft before installing the insulation, as this will allow you to fit it between the joists correctly. It is also advisable to check for any water pipes, tanks or electrical wiring in the area that may be affected by loft insulation. If necessary, call a professional to carry out the installation to avoid damaging these items.