This afternoon, I removed some floorboards. Apparently, our boiler has an incorrect width gas pipe, which is unfortunately buried in concrete.
So, the new boiler requires a larger pipe and the easiest way to fit one is to follow a path from the front of the house, upstairs and through bedrooms, before returning through the kitchen ceiling at the back of the house.
In a bad situation, there’s often a positive. It was interesting to see that joists had been connected with pegged mortise and tenon joints.