Insulating your home is one of the fastest and most effective ways to keep it warmer and reduce your energy bills. This is a permanent change to the structure of your building so, depending on the type(s) of insulation you choose, it may change the way your home looks.

Find out more about the eligible measures for the Green Living Reward

Loft and pitched roof insulation

The recommended minimum amount of insulation is 270mm and is made up of rolls of mineral wool (known as quills) between and over ceiling joists. You’re also eligible if you’re topping up your loft insulation to meet the recommended minimum amount of 270mm. Pitched roof insulation is applied directly to the underside of the rood and is primarily used in situations where loft insulation is not practical.

Flat roof insulation

The insulation can be fitted above, within or below the structure of the roof.

Solid walls insulation

Solid wall insulation can be either internal (adding a layer of insulation to the inside of the outside wall) or external (adding a layer of insulation to the outside of your home).

Cavity wall insulation (including party wall)

If your house was built in the 1920s or later it will likely have cavity walls, meaning the outside walls will be made of two layers of masonry with a then gap or 'cavity' in the middle. Cavity wall insulation involves insulating the cavity between the external and internal wall and is one of the most cost-effective ways to make your home warmer and cheaper to heat.

Room in roof insulation

Stiff insulation boards can be cut and placed between the rafters in your roof, which are then covered with plasterboard, or with insulated plasterboard if you need extra insulation. Some homes may need a different approach, depending on the available space.

Solid floor insulation

Most often, a layer of insulation is added on top of the concrete, with chipboard layer laid on top.


Suspended wooden floor insulation

A layer of insulation is placed under the floor, between joists.