help needed/section of damp floor

specsappeal

Hello everyone,
i was wondering if you guys could help me out? I moved into my house in feb and today ripped up the laminate in the lounge (it used to be two rooms and was knocked into one) as i have a carpet being laid next week. Half of the room has parquet flooring and the other half is concrete. Now in the section where the wall used to be (the one that was knocked down to make one room) the builder (?) laid the concrete right up to the parquet. on top of the concrete half there was also a blue (non breathable) membrane on top. then there was the underlay followed by the laminate. We lifted the laminate and the underlay was very musty. However where the concrete joins the parquet it is a little damp. We have had to remove 6 of the parquet blocks and some of the surrounding concrete. I assume that the water in the concrete was 'sucked' out by the parquet? there is a membrane under the concrete however and the whole house was damped proofed a few years ago. Would it be okay to fill in the holes with new concrete and then seal it ready for the carpet to be laid? the area in question is less than a metre square and the rest of the floor on both sides of the room is bone dry.
Any advice would be appreciated.

eightpints

hi,
there is probably some moisture rising up what is left of the old wall (as you mentioned your house has been damp proofed, so must have suffered from rising moisture at some point). I would just put some polythene down over the whole area to ensure that the moisture stays below it and not entering your new carpet.

benood

Do you know if there is a proper damp proof membrane under the concrete?

I would be tempted to wait a while (1+months) for the floor to dry out before laying the carpet and then lay cheap carpet expecting to have to replace it in a couple of years while hoping it would last longer.

specsappeal

thanks for your replies guys. overnight the section in question has dried right out. So we have painted a damp seal on it. will leave it to dry today then concrete the hole and reseal again. hopefully that will be the end of it.