When the floor is lifted it does not appear to be soaking wet.
Leaking pipe in concrete floor.
It will be fixed and then your concrete restored.
Opening a slab will create a significant amount of dust so taking the appropriate steps to cover and or remove furniture and valuables is important.
I suspect a pinhole is feeding moisture into the concrete which is rising and finding itself trapped below the oak.
To escape this water may pool on top of your floors yard or the concrete itself.
If you have leaking copper pipes in concrete slab or behind bricks and cinder blocks you have a right to be concerned.
As copper pipes age they are prone to wearing thin and springing a leak.
Once the leak is located jackhammering a hole in the floor is required to access the pipe.
If you have carpeted floors search for areas that look darker or are unexpectedly damp.
A slab leak with a broken sewer pipe can be especially unpleasant and dangerous.
Slab leaks create water build ups underneath your concrete foundation.
The most common type of pipe used for water lines under a slab foundation is copper tubing.
When the floor is up it is simply evaporating.
A plumber can find the location of the broken pipe and then fix it.
Many homes today in various parts of the country are built with concrete and in floor radiant heating in concrete slabs and homes dating back to the 1950s as.
Repaired pipes that are embedded in concrete and located behind masonry can be expensive because the plumber has to dig or drill through the surface in order to reach your pipes.
If you have wood panel floors watch out for spots where the wood starts to warp.
A slab leak can be difficult for the average person to detect until the home begins to exhibit signs according to angie s list those signs may include increased water bills the sound of water running the loss of water pressure damp baseboards or wet carpets and floors.
Pipe leaks within concrete i e slab leaks are identifiable with a thermal imaging camera but due to a variety of influential factors they aren t always identifiable unless you know what to look for and have the right tools.
The floor is in the corner of a cloakroom and near to central heating pipes.