PeterW Posted December 29, 2021 Share Posted December 29, 2021 18 hours ago, Buzz said: Another alternative would be to stay at 150mm and swap pir for eps , you will save some money on the insulation and can keep the same depth screed. But for a significant loss in performance and wouldn’t meet building regs. You need at least 250mm of EPS to replace 150mm of PIR Link to comment Share on other sites More sharing options...
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