Engineered Oak Floor lifting

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Hi


I had a new extension built last year. On the ground floor, I had 21mm (6mm) engineered oak installed in September.

I noticed today that one of the boards in the middle of the room is starting to lift.
I generally had a bad experience with the contractors - mainly the owner getting "jack of all trades" to "have a go" at specialist works.
My immediate suspicion is they haven't left expansion gaps. I took photos throughout the building process as keepsakes, so went back to some I took when the floor was going in. However, these were inconclusive of whether there were expansion gaps.

The other thing I thought it could be is that we have a piano, which is very heavy, by the wall, not too far from the lifting board. This has been here for about 6 months and I was wondering if the weight of it would be preventing the boards expanding in that direction?

Any help, much appreciated.

Regards,

Graham
 
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Could be either, the expansion gap round the edge will need inspecting, by either removing the scotia or skirting. The board you have purchased is a very stable board so the chance of movement is very minimal.

If you are going to contact someone to have a look i would recommend a floor layer as they would have more experience.

good luck
 
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my thoughts revolve around the fact that you say its an extension

are you sure the slab was dry?

were moisture tests done?
 
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I agree with Floorsave and Lymmranger, the floor sounds like it has moved, the cause of the movement needs to be identified, the remedial could be as simple as allowing a little more expansion for the floor, or if there are moisture issues, things will be a little more involved to rectify the floor.
 
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