I have a question about the installation of wood flooring. We have recently renovated our 1902 costal home. It was freezing cold with no draughtproofing or insulation so we put in underfloor and roof insulation, underfloor heating, external wall insulation, airtightness and mechanical ventilation heat recovery. The house now is an even 20C with 40-50% humidity maintained, so all good there. Unfortunately, in the process, we had to take up all the lovely original floorboards on the ground floor. They were set aside for reuse but many were ruined and we now have about half of what we need. We have tried to source replacement boards (22mm Baltic pine) but the only way we can get these is to use re-sawn reclaimed joists which are obviously very expensive and not the same thing at all. The original plan was to stick the 22mm boards onto the structural deck, which is made of a proprietary 22mm routed chipboard for the ufh pipes covered, as per manufacturers instructions, with screwed and glued 6mm ply. My current idea is to resaw and plane the original 22mm boards into 2 no 8mm boards then glue these onto the plywood deck, effectively making an engineered floor. I have to glue to avoid hitting ufh pipes. The surface layer has no structural role because of the chipboard and ply so 8mm should be ok. Warping is obviously a risk but the boards have been acclimatised in the house for 6-8 weeks to minimise this and prompt glueing to the floor should also help. I get one go at this so I am anxious to avoid big mistakes! What do the forum think of this possibly crazy idea?