The easiest solution for damp proofing concrete floors is to install a plastic membrane.
How to install damp proof membrane on concrete floor.
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.
It sits between the concrete and the underlay floor covering.
This can cause issues with mold and mildew especially if you have carpet or.
When can a dpm be installed.
All types of floor coverings can be installed on top of a plastic membrane.
Concrete s porous nature means that water from under your home can seep up through your concrete floor making it damp.
This barrier is intended to stop moisture passing from one to the other.
1200 gauge dpms should be used when a floor is direct to the ground.
Essentially this is a plastic mesh sheet specially formulated to ensure that moisture cannot penetrate.
They do however always require a separate floor covering on top and special attention needs to be paid to the floor wall junction detail.
Starting at one side of the room unroll the membrane and cut to fit the room as one would a carpet.
If there was no dpm i would suggest a uniformal distribution across the whole floor.
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.
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.
The next membrane width is rolled out so that the edges of the membrane overlaps.