Found these strange bubbles forming under the paint on my wall near the floor. They feel soft to the touch and seem to be getting bigger—is this a reaction to humidity or something worse?

such as a bathroom or kitchen, humidity might be the culprit. However, if the bubbles are widespread or located on interior walls away from water sources, this could indicate a leak within the wall or rising damp from the floor.

Several common sources of moisture can lead to bubbling paint. These include leaks from plumbing pipes within the walls, roof leaks that allow water to seep down the walls, and condensation from poorly insulated areas.

In older homes, moisture can also come