Bubbling and blistering can be caused by rain if the paint hasn’t had enough time to dry before a storm moves in, but in many cases once the sun comes out the bubbles disappear,” he says. If your bubbling paint can’t be traced to any of these factors, the culprit may be your roller cover.

Why does my paint bubble when it rains?

It usually requires quite heavy rain, as the moisture needs to force itself into the surface of the paint while it is still permeable. This water becomes trapped between the layer of paint and the wall surface, causing a bubble as it starts to dry.

What happens if it rains after you paint?

Rain will wash wet paint off the surface and paint won’t be absorbed into a wet surface. When it is raining outside, the paint will wash away if it isn’t dry. The best way to handle this is to be sure to avoid rainy days. If there is rain forecast for significant parts of the day, plan it for another time.

Why is my new exterior paint bubbling?

There are many possible causes. The surface might have been dirty or the weather too hot or cold, or moisture could be moving through the wall and pushing the paint off. Applying oil-based paint over water-based paint can also cause bubbles, but we can rule that out because you bought a water-based product.

What causes paint to blister or bubble?

Paint blisters or bubbles occur when the paint film lifts from the underlying surface. The loss of adhesion between the paint film and surface is usually caused by heat, moisture or a combination of both. This condition eventually leads to peeling.

Why is my freshly painted wall bubbling?

What Causes Bubbling or Blistering Paint? Blisters or bubbles appear when a layer of paint does not adhere perfectly to its underlying surface, known as the substrate. As the new film of paint dries and pulls away, pockets of air or water form underneath.

How do you fix paint blisters?


  1. Repair loose caulking and improve ventilation of the building to prevent a recurring problem.
  2. Remove the blisters by scraping or sanding down to the bare surface.
  3. Prime all bare areas with a high-quality primer.
  4. Repaint the surface with a high-quality paint in the desired finish.

How soon after painting can it rain?

Exterior latex paint, like most paints, usually takes between four and eight hours to fully dry. It is a good idea to allow for at least twelve hours of drying time before the rain starts. If you can allow the paint to dry 24 hours before it rains, that is best.

Will rain hurt fresh paint?

Can you paint in the rain? The short answer is no. If you contractor offers options to work in the rain, run. Moisture on the walls and in the paint will ruin a job.

How much time does exterior paint need to dry before rain?

Roughly speaking, your exterior paint should be able to handle some light rain within 2 hours. Around 4 hours it should be ok for rain. It depends on the humidity, temperature, and color. High humidity, low temperatures, and dark colors slow the drying process.

Will air bubbles in paint go away?

Generally, these bubbles pop quickly, leaving the paint to dry smooth. If you notice the bubbles popping soon after application, they usually go away on their own without leaving craters. If not, adjust your paint, roller or technique to minimize bubbling.

Should you pop paint bubbles?

Do nothing. It’s not a cop-out. Some paint bubbles resolve themselves as the paint cures.

What causes blooming in paint?

Blooming is the defect caused due to improper ventilation, weathering, defective paint, etc. In this case, dull patches are formed on the painted surface.

What do you do with air bubbles in paint?

There are several steps to this process:

  1. Take a scraper and remove the paint in the area where it has bubbled.
  2. Sand down places with loose paint.
  3. Clean the surface and allow it to dry completely.
  4. Apply a new layer of primer and allow it to dry.
  5. Apply a new coat of paint.

Should I pop a water bubble on my wall?

Generally, it is not recommended to pop the bubble on your wall. Chances are, the bubble itself is slightly damp, and may have taken on a tissue-like texture, so you won’t even be able to pop it.

Does damp cause paint to bubble?

Bubbling or peeling paint
This causes paint to bubble or flake. In modern homes, bubbling or peeling paint caused by damp is especially common in steamy areas with poor ventilation such as kitchens or bathrooms.

How do I know if there is moisture in my walls?

Here are a few common signs that you have too much moisture in your home:

  • Peeling paint or wallpaper.
  • Water marks or staining.
  • Wet spots on the wall or ceiling after rain.
  • Water running down inside walls.
  • Walls that feel damp to the touch.
  • Visible mold.
  • A musty, stale odor.

How do I stop moisture in my walls?

Let’s find out!

  1. How to prevent moisture in walls?
  2. Ventilate your home properly.
  3. Improve your insulation.
  4. Install exhaust fans.
  5. Get a dehumidifier.
  6. Keep control of mold growth.
  7. Take care of all the leaks.
  8. Install wide windows.

What causes wet patches on walls?

Damp patches on walls are generally the result of penetrating damp, where water from outside gets into the brickwork through gaps and cracks. If the patches are clustered around windows and doors, then it’s likely that rain is getting in through gaps around the frames.