How to Fix Paint Bubbling & Blistering
You never want to wake up one morning to see paint bubbles after spending hours rolling paint on a wall. So what causes paint to bubble and peel in the first place? Here I have a detailed article on the Paint Bubbling & Blistering and how to treat it if it has already occurred.
The Power of Adhesion
When a layer of paint does not adhere perfectly to its underlying surface (known as the substrate) blisters or bubbles emerge. Some of them deflate or explode independently making an uneven surface. That surface could be the previous layer of paint or the substrate, such as plaster, drywall, or wood.
As the paint dries, other bubbles or blisters harden in place. It results in a blemished surface that you’ll need to fix. In addition, the blistering patches may never fully reattach to the substrate and peel later.
Paint Bubbling Reasons
Paint coatings can loosen at any time, even if they’ve been applied for a long time. You could repaint it, but that is not a permanent solution because the paint will probably bubble again. So here we have some causes of paint bubbling and ways to fix them.
- Dirty walls
- Skipping the primer
- Using the wrong technique, tools, or paint
Repairing Bubbled Paint
How To Fix Paint Bubbling/Blistering
There are three steps how you can stop it or repair bubbled or blistered paint:
1. Remove the damaged paint
- Using lengthy vertical and horizontal strokes, gently scrape away the paint that has lifted from the surface using a putty knife.
- Don’t retouch the entire area if there are a couple of bubbles.
2. Prepare the surface
- With the help of a thin layer of patching compound, clean your putty knife.
- Use this knife to fill any holes or indentations in the substrate.
- Let the compound dry completely.
- Sand the patched areas smoothly with a fine-grit sandpaper.
- Clean and dry the surface before applying a primer.
- Using the correct brush or roller, repaint the surface once the coat of primer has dried completely.
- To avoid the creation of bubbles, stir the paint carefully and brush or roll it at a moderate speed.
- Because two layers won’t adhere and bubbles or blisters will form, oil-based paint cannot be used directly over water-based latex paint.
- If you’re preparing a surface that is covered in old paint, take proper precautions.