Loft insulation: up to a quarter of your home’s heat escapes through the roof; you can solve this by laying mineral wool under the rafters.
Source: Free Insulation and Boilers: Boilers, loft & cavity wall insulation for free @ MoneySavingExpert.com
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- Roof and loft insulation @ Energy Saving Trust
Excerpt: Heat rises, and in an uninsulated home a quarter of your heat is lost through the roof. Insulating your loft, attic or flat roof is a simple and effective way to save that waste and reduce your heating bills – you can even do it yourself. Loft insulation is effective for at least 40 years, and it will pay for itself over and over again in that time.
Image by Bios (talk · contribs) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
