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How Temperature and Humidity Affect Your Exterior Paint Job

Posted on August 30, 2019

Lynn, MA Home Exterior Painting

The forecast matters when it comes to your exterior paint job.

You know that the climate can affect your exterior paint job. Obviously, if it's raining, there's no chance of painting your house today. Extreme heat or cold temperatures might impact how quickly your paint dries. And temperature and humidity in particular have a strong impact on your exterior paint job. But how exactly do various temperatures and humidity levels impact your paint application?


There's a common myth about exterior paint that you have to wait for a cool day in order to paint your home. The truth is that the rate at which paint dries has more to do with humidity than the actual temperature. However, that doesn't mean you should ignore the temperature altogether. Paint holds its moisture as it cures, and when temperatures drop below freezing, that moisture can crystallize. Latex and acrylic paints, too, need to be applied at no lower than 50 degrees.


While humidity is the biggest component when it comes to paint drying, too hot temperatures can cause the top layer of paint to skin over before the lower layers have dried. This can eventually lead to problems of bubbling or cracking. Over time, very hot, sunny days can also cause the color of the paint to fade, which is why it's so important to have the paint job done well from the start, with rich color and careful application. It's for this reason that No Risk Painting commits to using brushes and rollers rather than spray painting.


Again, humidity is really the factor that most impacts the rate at which your paint dries. High humidity levels, no matter what the temperature, keep the paint moist for longer. If your paint doesn't dry quickly enough, you can have issues with dripping. Thus even a warm day, so long as it's a dry heat, might be the right choice in terms of helping the paint to dry. The moisture from high humidity levels can also water down the quality of the paint, fading the color before it's even had a chance to dry on the walls.

At the end of the day, it's best to have an exterior paint contractor who's well-versed in how the climate will impact the quality of your paint. That's what we offer at No Risk Painting, with not just expertise but no upfront cost or risk to you. Contact us today for more information or a free quote.

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