We had engineered wood flooring put in the kitchen last winter. Installation went well, though we noticed one area that warped slightly afterwards and pointed this out to the builders. They said this was fine as the floor was settling.
This area is warping badly now. I told the builders and they came round to take a look. Their diagnosis is that the humidity from the ground is making the floor bow, and their proposed solution is to increase the allowance (currently 1cm) at one end of the room. This will involve taking up some skirting, cutting one plank, fitting a threshold - 2 guys, 1 day's work they said.
The question is, should we be paying for this? The flooring company says if the flooring is warped, it will be because the floor underneath wasn't properly prepared. The planks are good quality, no-one disagrees with that. The builders haven't yet told me a price, but I think they are expecting to be paid for this.
I just wanted to check if this is appropriate, or if I should be requesting this work for free/reduced rate, or following up with the flooring company, etc.
Thank you!