As my title states, I have a house that is on a slab and the exterior and most interior walls are block and covered with plaster. Since we bought the house we have noticed a musty smell that we originally thought was the washing machine.
It wasn't.
My concern now is that is may just be the HVAC system built in the slab, but that costs thousands to clean, and to reseal with spray. The smell isn't just in the hvac system though, it seems to be seeping out of the walls. I am just looking for suggestions, ideas, or even concerns that informative people may have on this issue. Anything helps!
Best Answer
My sister had a condo and had very similar problems with the odor. It was the a.c. ducts actually installed in the ground with the foundation poured over then. They rusted out and that's where the musty smell came from. We ended up filling in the ducts and sealing them and running some new ducts on the ceiling and framing around them with drywall. If you have registers in the wall that might be why you think the odor is seeping in from them. Good luck.