How to Insulate a Loft
This video guide & project page will help you insulate your home effectively, allowing you to save energy and money.
Carefully check whether your loft is suitable for insulation. There should be sufficient ventilation to allow air movement, and no evidence of condensation, mustiness, wet or dry rot or mould growth.
To comply with thermal requirements of building regulations, a 270mm thickness of insulation is required in loft spaces of new dwellings.
Remember to use suitable crawling boards when working in the loft. They should span at least four joist boards.
Try and avoid leaving uncovered areas or storing items on top of exposed insulation as this will reduce thermal efficiency.
Once insulation has been installed, a permanently fixed raised walkway will prevent the insulation from being compressed and losing thermal performance.
Remember to wear safety gloves when handling insulation products, and use a suitable face mask when working in lofts and confined spaces.
Good Idea Leaflet
In addition to our 'How To' video, we recommend you read our 'Good Idea Leaflet - Home Insulation'. It features diagrams and detailed step-by-step advice on insulating your home from top to bottom.
Download GIL - Download GIL - How To Insulate Your Home [ 270 KB ]