You’ve decided it’s time to paint your house. You picked out the color, choose the date, and even hired some helpers. But have you taken the steps to avoid the most common painting problems? Here are the top three – and how to avoid them.
Paint blisters look like small to medium-sized bubbles or blisters under the paint film, and come from painting in direct sunlight on a hot surface (which causes paint to dry too quickly), painting when the wood is damp (which causes moisture to become trapped under the paint and later create a bubble), painting in high humidity or rainy conditions, or moisture escaping through the walls of the house due to improper house ventilation. So how do you prevent paint blisters? Here are a few tips:
- Before you paint, ensure that your home’s ventilation is working properly.
- Start with wood that is completely dry.
- Paint in non-humid conditions.
- Repair any loose caulking before painting.
- Don’t paint in direct sunlight.
- Use high-quality paint.
Alligatoring? Just like it sounds, alligatoring makes your home’s surface look like the skin of a reptile – cracked that is. This cracking pattern is caused when the second coat of paint is applied over the first coat of primer or paint base coat before it dried, when the second coat of paint is not compatible with the first, such as glossy paint or a hard oil enamel over a latex-based paint, and because oil based paints naturally lose their elasticity with age, which leads to cracks caused by fluctuations in temperature. So how do you prevent alligatoring? Here are a few tips.
- First remove all of the old paint, then sand, prime and repaint with flexible latex base.
- Avoid oil based paint and choose high quality latex paints instead.
Efflorescence looks like crusty white salt deposits that bubble through the paint film giving your home the look of, well, dried sweat. Efflorescence happens the paint was not prepared properly and prior efflorescence not entirely removed, when excessive amounts of moisture leach through exterior walls from inside the home, when basement walls are not fully waterproofed and ground water penetrates through, when the home is painted before the concrete or mortar has fully cured, and when cracks in the walls of the home allow water to pull through. So how do you prevent efflorescence? Here are a few tips:
- Eliminate the source of any water leak by repairing any cracks in the masonry wall before painting.
- Ensure that the basement walls are adequately waterproofed
- Remove any prior efflorescence by power washing before painting.
- Use a high quality latex paint and ensure that it dries fully.
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