Assuming that the damp proof membrane dpm under the concrete has failed in areas then yes you possibly would get the odd patch of dampness showing in the floor.
How to install damp proof membrane on concrete floor.
1200 gauge dpms should be used when a floor is direct to the ground.
You should use them to protect all final floor finishes.
These joints are then sealed with waterproof tape.
Concrete s porous nature means that water from under your home can seep up through your concrete floor making it damp.
Starting at one side of the room unroll the membrane and cut to fit the room as one would a carpet.
A damp proof membrane dpm is used to create a barrier between a concrete or screed subfloor and the floor covering that is laid on top such as wood ceramic or quartz tiles laminate or carpet.
The next membrane width is rolled out so that the edges of the membrane overlaps.
When can a dpm be installed.
This can cause issues with mold and mildew especially if you have carpet or.
Physical damp proof membranes such as oldroyd xs slimline membrane are often quicker and easier to install than using damp proof coatings as they can be installed on still damp surfaces.
Installing a damp proof underlay for concrete floors.
If there was no dpm i would suggest a uniformal distribution across the whole floor.
This barrier is intended to stop moisture passing from one to the other.
All types of floor coverings can be installed on top of a plastic membrane.
A dpm damp proof membrane is a plastic sheet membrane that sits between a concrete slab or screed and acts as a barrier to stop moisture and contaminants entering a property from the ground.
They do however always require a separate floor covering on top and special attention needs to be paid to the floor wall junction detail.