Alex139

Hi. Would appreciate some advice. We are currently having wet UFH laid. It’s on the first floor, new build. Kingspan between joists with aluminium spreader above with UFH grooved slots. What would be recommended to go as the subfloor? 18 or 22mm chipboard? We will then be having 5.5mm plywood followed by Amtico LVT (2.5mm thickness). I want to have a subfloor which is ideal depth for heat transfer from the UFH system but also sturdy enough that if doesn’t creek. Many thanks, A