In order to reduce the risk of the solid oak floor warping after laying due to the under floor heating system, you need to “acclimatise” the wood before laying.
This means leaving the packs of flooring to be used in each room in the house (in the room it will be laid is even better) for 2 weeks while the underfloor heating is on so that it gets use to the humidity and temperatur the house will be at.
Then about 2 days before you are going to lay the floor you need to switch the underfloor heating off, and then turn it back on slowly (over two weeks or so) after the floor is installed.
