You are reading a single comment by @Hefty and its replies.
Click here to read the full conversation.
-
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.
Hefty
hugo7
hoefla
Google images isn't throwing up any results for DIY equivalents.
Loft Zone say that adding extra joists puts too much weight on top. Obvs they would say that tho.