Excess damp in the room, water damage, poor installation, furniture that’s too heavy... Many issues can cause wood flooring to warp. When wood flooring warps, the boards expand, move, swell and eventually rise. Warped wood flooring can be repaired, to some extent: the method to use depends on the source of the problem.
The relative air humidity for wood flooring installations must be between 40 and 60%. If the humidity in the air is too high, install an air dehumidifier so that the wood flooring goes back to its original shape. If the warp on the wood flooring is too severe, this usually won’t be enough: the damaged boards need to be removed and replaced. For solid wood flooring, even if it goes back to its original state, sometimes slight sanding will be needed to remove any remaining traces of warping.
Note: on the other hand, if the ambient air is too dry, the wood flooring will shrink and openings will appear between the boards or under the skirting boards. In that case, we suggest placing a humidifier in the room.
If you don’t leave at least 8mm of expansion gaps around the edges of the wood flooring when laying it, the floor won’t have enough room to expand, it will push against the wall as it expands and will warp. Remove the skirting boards and adjust the boards using a multi-tool with a saw attachment or a woodworking chisel to make more room for the wood flooring.