Why Are There Bubbles in My Wall Paint After Rain?

Start by checking the outside of your home on the side where the bubbles appear. Look for cracked caulk around windows and doors, gaps in siding, or missing roof shingles. Rain gutters that overflow can also send water down the wall, so make sure they are clear and directing water away from the house.

Inside, feel the wall around the bubbles. If it is damp or soft, the water is still active. You can also check the attic for wet insulation or stains on the ceiling. If you cannot find the source, a water damage inspection can help. If you live in Fresno, keep your shutoff valve location written down in case a leak develops.

If the bubbles cover a large area, or if the wall feels soft or crumbly, the drywall may be water damaged. In that case, the pros can remove the damaged material and replace it. They also have moisture meters to check if the wall is truly dry, which is hard to do by touch alone.

Water that has soaked into the wall can hide for a long time. The pros can help identify the full extent of the damage and dry the area properly. If you see mold or smell a musty odor, that is another sign you need professional help. Do not ignore it, as mold can spread quickly.

Yes, mold can grow where moisture stays trapped behind paint. The damp drywall and paper backing provide a food source for mold spores. You might notice a musty smell, dark spots, or the paint starting to bubble and crack. Mold can spread to other areas if the moisture is not dried out.

If you see or smell mold, do not disturb it too much, as that can release spores into the air. See a doctor if you feel unwell from exposure. A mold professional can assess the situation and remove the contaminated materials safely. The pros can also dry the area thoroughly to prevent regrowth.