closure plate

Hi, When the cavity is filled with 90mm PIR there is a 10mm remaining cavity but there are very few details of how this is finished. In this diagram a closure (circled in red) is shown but I cannot find any products to do this (Fire socks etc are all 65mm or bigger)- any suggestions on what...

Hi all, We’re going to have a stove installed this summer, and I’m prepping our fireplace ready. It’s made entirely of lime and clunch (chalk), and is extremely delicate and any substantial fixings need to be planned as the walling doesn’t hold much weight on its own (no brick or other sturdy...