Keep The House Warm

Loft Insulation

loft insulationWe all know that heat rises and this means that in an uninsulated home a quarter of your heat is lost through the roof. As a result Insulating your loft or attic is the simplest and most effective way to reduce your heating bills. Loft insulation remains effective for decades so is a great addition to your home. It will also help to increase your Home Energy Rating and property value.

Financial Benefits

Measure Annual Saving Carbon Dioxide Saving Per Year
Loft Insulation Up to £180 Around 730kg

These are estimated figures taken from the Energy Saving Trust

Will loft insulation be suitable for you?

If your property has a roof space which is un-boarded and you have less than 60mm of insulation or no insulation fitted, your home may well be suitable.

Installing loft insulation

If your loft is easy to access and has no damp or condensation problems, it should be easy to insulate. The most common method used is rolls of mineral wool insulation. The first layer (usually 100mm) is laid between the joists - the horizontal beams that make up the floor of the loft - then another layer (usually 150mm) is cross-laid at right angles to cover the joists to make the insulation up to the required depth of 220mm. This can be done easily by a professional installer.

Insulation must not block eaves or interfere with the ventilation of the roof space so a 50mm gap will be left between insulation and the underside of the roof. Electric cables should not be covered.

Before the installer visits you should clear your loft, old insulation can be left in situ as this will be topped up to reach the required thickness. We would also recommend that items such as pictures and mirrors are removed from walls leading to the loft access.

Creating a living space in your attic

Some people plan to use the loft or attic for storage or living space and want to lay boards over the joists. Doing this would mean you only insulate between the joists so the insulation won't be thick enough. To get enough insulation you can lay rigid insulation boards on top, with wooden boarding on top of that. You can buy insulation board pre-bonded to floor boarding to make the job easier or raise the level of the floor so you can fit enough mineral wool beneath the new floor level.

Irregular joists

If your loft space is irregular, for example the joists are the wrong distance apart for rolls of mineral wool, or there are lots of obstructions loose-fill insulation is an option. This is sold in bags as cork granules, vermiculite, mineral wool or cellulose fibre, which can be poured between the joists to the right depth. This can be done by a professional installer: you may need to increase the height of the joists to get the insulation deep enough.

Damp lofts

Damp issues in lofts should always be treated prior to fitting installation, Often this can be easy to address by fitting a vent or dealing with condensation on a chimney breast.

Pipes, tanks and hatches

Pipes and water tanks will be more likely to freeze, so you will need to insulate them. If your water tanks are some distance from the loft hatch, you will also need something to walk on for safe access. Loft hatches can have strips of draught-excluding material added to the edges of the frame. Always check that the installers you choose will address the insulation of pipes, tanks and hatches.

Next steps

To speak to Keep The House Warm about solid wall insulation call 0800 118 2755 or click here to contact us through this website.