Hi all
Long time lurker first time poster.
Bought a 1950s terrace 18 months ago and has been mostly renovated. Some by us but mostly by a builder.
For some reason at the time we didn't tile under the stairs or pantry.
Looking under the stairs some of the concrete floor felt a bit 'hollow' when I tapped and you can see a cracked section in the corner. This whole section taps hollow. I removed the worst bit in the corner as you can see but the more I remove the more hollow the rest of it sounds...
As this will be a zero foot traffic area can I get away with patching the hole and tiling on top or will I need to get a Pro in to remove that section of sub floor, cna I remove and self level?
