engineered flooring with wet under floor heating

[PhoebeLaura]

Does anyone know if there is a maximum depth of board suitable for use with wet UFH? I've found a 21mm one I like but some websites suggest this is too deep to allow heat through. Anyone got any experience with this? I'm getting so many different answers when I google it...

I think that does sound too thick, the problem with the engineered boards is that they don't transfer the heat as well as something like tiles. I would have a word with the manufacturer of the underfloor heating system (there is usually a technical department who are used to answering these sort of questions) and see what they say.