DIY Doctor UK DIY Forums

i, i have a small about the size of a pint jug in my front room under the laminate flooring, reason why it is like that is becasue had to have a electrical box put in there to safe zone the sockets near it before the flat was rented. I was wandering how is the best way to fill this hole, considering there is a elctrical box in there now, i presume i would still just pour concrete in there, poss just lay a panel over the top then laminate on top? or is there a pacific sealer maybe. any help would be great. Thanks

you could do that but put plastic over it first, or fill it with expanding foam and cut the excess off when set.