How to Prevent Paint Blisters and Peeling on Walls

Paint blisters or bubbles occur when the paint film lifts from the underlying surface. This is usually caused by moisture or heat, or a combination of both. When water vapor gets trapped beneath the paint film, it expands and pushes the paint outward, causing blisters. Over time, these blisters rupture, leading to peeling paint.

To prevent wall blisters, you must first identify and eliminate the source of moisture. This could be a leaking pipe, high humidity inside a bathroom, or rising dampness from the ground. Once the source of moisture is addressed, the wall surface must be thoroughly cleaned, scraped, and allowed to dry completely.

Applying a high-quality primer or screeding putty, like BellonPaint Screeding Putty, is essential before applying the topcoat. This creates a strong adhesive bond and minimizes the absorption of moisture. Finally, always paint using premium finishes containing high levels of acrylic binders (such as BellonPaint Emulsion or Satin), which offer excellent flexibility and breathability, allowing moisture to escape without peeling the film.