Small Damp Patch On Interior Wall

One of the most common causes of damp on internal walls is condensation.

Small damp patch on interior wall. If the surface of. Typically shows up as a small isolated damp patch without any brown staining that gradually grows. Another handy instrument is a relative humidity hygrometer.

To deal with each issue you should first ensure your property is in good condition. Penetrating damp patches on interior walls will be down to other causes such as that leaking roof the problem with your gutters or the leaky plumbing. The condensation will sit on the internal wall and create damp patches all over it.

Damp from plumbing leaks. The level indicator on the front will then display the percentage of damp within the wall s surface. Stick the two prongs into your damp wall surface and leave for a while.

Damp problems after insulating the hollow wall. The warm moist air coos down and condenses back into water. The occurrence of rising damp is a classic sign of problems with the damp proof course.

When you have particular trouble with damp inner walls around the ground level you re undoubtedly dealing with ground water also known as rising damp. If the damp patches on internal walls are a result of condensation the problem is often fairly simple to remedy. What happens is that condensation forms when warm moist air within a room touches a cold internal wall or surface.

This is usually caused by an outdated foundation that doesn t have a damp proof course and thus absorbs the groundwater. If you re not sure of the cause of a damp patch on a wall try the foil test. Dry the wall surface with a fan heater then tape some kitchen foil tightly over the affected area.