Has anyone experience of putting down tile adhesive straight on top of electric underfloor heating? The UFH manufacturer says I can bury the cable in adhesive then tile as normal, but I'm not sure how this would work. Is the cable buried in a solid bed of adhesive, then add more adhesive and use a notched trowel on the top part only? I would have thought this might cause the tile to touch the cable in places, which doesn't sound good to me. Can anyone help or suggest a better approach?