You are reading a single comment by @hugo7 and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
hugo7
PIR insulation like Kingspan or Ecotherm is about twice as good as fibreglass roll for the same thickness. It’s loads more expensive, and needs neatly cutting so probably too dear if you’re paying an installer rather than DIY, but it could be worth running the numbers to see if 100mm of it between your existing joists is cheaper than 200mm of fibreglass and the fancy Loft Zone kit.