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Found 2 results

  1. Marvin
    I am about to insulate a wall. I am comparing Jablite (not basic polystyrene) to PIR board. I can make the wall thicker when using Jablite rather than PIR so thickness is no problem. It will not face compressive forces so no compressive strength issues. The cost seems to be about half. Both products seem to be combustible. If I understand it right, PIR encapsulates a gas which leaks out over time eventually reducing the product to the same u-value as Polystyrene. Why shouldn't I use Jablite?
  2. oranjeboom
    Right, evening all. I have sufficient depth in my ground bearing slab build up for 260mm of insulation and need to achieve at least a u-value of 0.11w/m2k. To achieve this I was going to use a mix of PIR and EPS. If I were to use the below, what overall u-value do I end up with? 100mm celotex (0.16) 160mm jablite (0.164) (My P/A is 0.449) Original plan was to go for 275mm EPS which would get me a u-value of 0.11, but now I've got a bit less to play with. I'd like to stick with that target u-value. Head is full of petrol fumes after whackering and levelling all day so my mathematical skills are even worse than usual. Another option I have would be to go for EPS100 instead of EPS70 but I have some 100mm celotex on site that I'de like to use up. Thanks in advance.
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