HI, we laid our click flooring most of the time we left an expansion gap but a couple of times we couldn't, anyway flooring turned out great. we then had the door case, door and architrave fitted and this big air bubble appeared about 3 ft around , when we stand on it it completely disapears so i dont think its the expansion gap, i think it was having the door fitted, weve altered it so none of the door and frame is touching the flooring but now we need to get rid of this lump in the middle-tried laying something heavy on it and pushing towarda the door but it just comes back.
any help would be gratefull
thanks