Why you should Insulate your Loft

While insulating your loft can cost as much as £300, it can also save around £180 off your energy bills so this is an investment that pays off fast. The recommended thickness is 270mm and you can buy the materials from most DIY stores.
Having said that, getting an expert to help can be a good idea, particularly if you want to use your roof space for storage - squashing the insulation makes it much less effective and you may need rigid insulation boards instead of the roll-out material.