If there are no water pipes running under the floor that are leaking and your roof is not leaking you have looked up made sure nothing is dripping from above right you definitely need to.
Carpet wet at wall base near roof vent pipe.
Too much moisture behind the walls can eventually cause paint and wallpaper to start peeling or bubbling.
Vote unless the wall involved is a masonry wall that is partially below grade with water collecting at the base my bet would be you have a roof leak.
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.
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.
This normally happens when the sheetrock behind the wall has absorbed too much water.
This is the simplest way to tell that you have a water leak in your walls.
You can be sure that water is leaking in a wall if you see conspicuously wet carpet or notice that the floor is always wet in a certain area of your home.
When you leave moisture sitting in a warm dark place these toxins will invade your home and once moisture and mold permeate a carpet pad it s impossible to eradicate.
The main water line comes.
If the stains on your wall continue to get bigger this is usually a good indication that there is a hidden plumbing leak.
The wet area is about a foot from the closest wall and about 8 feet or more from an outside wall.
Look for standing puddles of water near a wall.
So if a full wetted circle in the carpet the leak is about at the center of the wetted circle usually meaning came from above through a ceiling fan or light fixture but could also be from an in floor heating loop system if in concrete floor or if a wetted area extending away from the wall in an arc but only wetted at one wall find the.
If you have damp patches bubbling paint crumbling plaster or powdery deposits on wall surfaces close to the floor rising damp is probably the culprit.
Get a fan and blow air across the carpet to dry it.
Unattended wet carpet is prone to mold and mildew.
Mold is incredibly toxic to humans and pets.
You should go outside durring a rain storm and if this wall is at grade level see if there is any ponding near the foundation or bottom of the wall.
Paint or wallpaper peeling.
If it s on a slab it could be any of the above mentioned things drain or water pipe leak a vent leak on the roof or it may be ground water seeping up through the slab.