Carpentry & Joinery

Raised ridges in line across floorboards caused by steel joists?

Anonymous user 03/03/2024 - 3.00 PM

Hello, We are in process of buying a house which is a self-build of 12 years old. Although modern, we noticed the owners had carpeted both bathrooms upstairs rather than tiling. We then noticed there was a hard ridge running along the width of the floor and also into the adjacent room. This was the most noticeable area but ridges under the carpet were also felt in a line in another part of the upstairs. The owners have been very defensive about this issue, even refusing us further access at one point. All they have been able to tell us is that it is to do with the differing expanding properties of steel and wood which is clearly unsatisfactory as I would presume if work is done properly these properties are taken into consideration to avoid this happening in the first place. Please can anyone help us to decide if this a huge problem or an easily remedied one or whether we need to go in, lift carpets and investigate? Many thanks for your time and expertise.