Hi, I believe some water got down below the screed and is trapped between the slab and screed where the insulation is. A bad smell comes up around where the soil pipes go through the screed and I also believe around the edges of the screed and gets up behind the plasterboard and into the ceiling.
I'm planning on drilling a 6cm diameter hole down through the screed so I can check out if there is damp down there causing a bad smell. If there is damp under the screed I plan to probably suck air through the hole to help dry it out.
Is there anything I should be careful of when drilling a 6cm diameter hole down through my screed ?
Thanks
Stephen