We had our loft converted a year ago and in the last couple of months we noticed a slight ridge under the carpet, where one of the steel joists is situated. It's not very noticable to the eye but when you run your hand over the area you can feel a slight ridge. Is this something to worry about? Was wondering if it might be something to do with temperature changes and things expanding/retracting? All was signed off by buidling control and we were very happy with the work generally. Just wondering if we should get the guys back to have a look at it.
Many thanks.
Many thanks.