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How to Insulate a Loft

This video guide & project page will help you insulate your home effectively, allowing you to save energy and money.

How to insulate a loft from on Vimeo.


In addition to our Video Guides, we have free How To Guides packed with advice.

View How To Guide - How to insulate your loft

View How To Guide - How to create storage space

Tools for the job


Materials for the job



Preparation & Planning

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.

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Once insulation has been installed, a permanently fixed raised walkway will prevent the insulation from being compressed and losing thermal performance.

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Getting the job done - hints & tips

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.

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Remember to wear safety gloves when handling insulation products, and use a suitable face mask when working in lofts and confined spaces.

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