I suggest you get an independent survey to pinpoint the problem before undertaking any remedial works.
Damp under carpet concrete floor.
Preparation is key with these coatings and the substrate must be sufficiently clean and dry.
Condensed moisture accumulation under the plastic at 16 hours can indicate a problem.
Damp rising through concrete floor slabs is fairly common when a damp proof membrane has failed or was not installed before the floor was laid.
This can cause issues with mold and mildew especially if you have carpet or.
It could also be bridging by the internal plaster or a failure of the wall floor joint.
It becomes a problem when the moisture levels are too high and water is transferred to the finishing layer above.
Which type of coating is chosen will depend on the intended use of the floor.
One of the simplest most economical test methods for determining whether there may be moisture in concrete is the astm d 4263 concrete moisture test.
Sometimes the issue can be bridging of the damp proof course by the concrete floor assuming is was timber prior as this often occurs.
If this is the case then the slab itself would need taking up a new damp proof membrane would need to be installed then a new concrete floor needs to be installed.
Concrete s porous nature means that water from under your home can seep up through your concrete floor making it damp.
Most damp proof floor coatings are applied directly to the concrete floor surface using a brush or roller.
These problems are not only disrupting functions of the building due to maintenance operations but also costly.
In this section we breakdown the main ways water can get into your concrete which causes a buildup of excess moisture and list effective methods to prevent moisture problems from occurring.
The temporary fix was to rip up the carpet knock a hole in the concrete slab repair the leaking pipe fill in the hole with quickcrete cement and restretch the carpet once it and the pad had dried.
Duct tape an 18 inch square piece of plastic onto the exposed concrete and leave it for 16 hours.
The permanent fix will be to re plumb the house in pvc through the attic which will cost about 4000 and which i ll do next month.