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Room In Roof Insulation

If there are habitable rooms in the roof space of your property then it is important to insulate the underside of any sloping ceiling to reduce heat loss 

Room in roof insulation comprises insulation boards that are placed in the spaces between the rafters (the diagonally sloping timbers that make up the roof). This is normally carried out by fitting rigid insulation boards, such as celotex or kingspan. Plasterboard is then applied on top of the insulating material to create the walls and ceiling of the room.

An alternative to using rigid insulation boards is to have foam insulation sprayed between the rafters, although this is not recommended for many properties as it does not allow air to circulate around the timbers, which can result in condensation and damp problems. 


Figure 1: Diagram showing a common problem associated with attic rooms that have inadequate insulation.

It is important that all areas of the roof are insulated, including gable walls, stud walls, party walls and chimneys. If any of these areas are left uninsulated then heat can will be able to escape and can potentially cause cold spots and damp issues.


Figure 2: Diagram showing the areas of the attic where insulation is installed as part of a Room in Roof installation.


Figure 3: Photograph showing a completed installation of Room in Roof Insulation.


We are able to obtain funding for Room In Roof Insulation for some properties. An energy assessment will need to be carried out on your property to establish whether it is suitable for Room In Roof Insulation to be installed and to calculate how much funding will be available.

If you are interested in Room In Roof Insulation for your property, please complete the Grant Checker on our Home Page and we will contact you to discuss your eligibility.



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If you want to find out which energy saving grants are available for you just fill in your details and we'll call you back to help.

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