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Have you ever noticed soft bubbles or blisters forming underneath paint on a wall?
At first, they may seem harmless.
Many homeowners assume the problem is simply caused by humidity or old paint.
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However, when bubbling appears near the floor and continues getting larger, it often points to something happening behind the wall that deserves attention.
Understanding the possible causes can help prevent a small issue from becoming a much larger repair.
What Are Paint Bubbles?
Paint bubbles, sometimes called paint blisters, occur when the painted surface separates from the wall underneath.
This creates raised areas that may feel:
- Soft
- Puffy
- Hollow
- Flexible when pressed
The bubbles can range from tiny spots to large sections covering significant portions of a wall.
The Most Common Cause: Moisture
In many cases, moisture is responsible.
Water can become trapped behind paint due to:
- Plumbing leaks
- Roof leaks
- Foundation moisture
- Condensation
- Poor ventilation
As moisture builds up, it weakens the bond between the paint and the wall surface.
Eventually, bubbles begin to form.
Why Location Matters
Paint bubbles near the bottom of a wall can provide an important clue.
This location may sometimes suggest:
- Water entering through the foundation
- Moisture wicking upward from below
- Plumbing issues inside the wall
- Leaks from nearby bathrooms or kitchens
The closer the bubbles are to the floor, the more important it becomes to investigate the source.
Signs the Problem May Be Getting Worse
Pay attention if you notice:
See more on the next page to continue reading →
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