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What Temperature and Humidity Can Do to Your Paint Job

It’s no secret that living in or visiting Florida means dealing with heat and humidity. If you’re a property owner, the humidity can cause problems when keeping your home well-maintained.

If it’s time to paint your house, the humid and hot conditions can affect the quality of the work. You might have a free weekend to tackle an interior or exterior paint job on your Watersound home, but make sure you check the weather first. If the temperature and humidity are not ideal, put down the paintbrush and head to the beach or a local restaurant.

If you are still not a believer, check out these reasons why temperature and humidity can ruin your paint job.

Humidity Keeps Paint from Drying

Watching paint dry takes longer than usual when the humidity is too high. When moisture is thick in the air, your freshly-applied coat of paint won’t dry or cure properly.

Even if you’re not watching it, you might return to see the paint dripping, running down the wall, or bubbling. It’s challenging to fix a paint job that takes place on a humid day. When it eventually dries, you might see brown discoloration or peeling sections of paint.

While it might seem like there are never any low-humidity days in Florida, watch and wait for the humidity to drop between 40-70 percent.

What About Humidity in Lower Temperatures?

Even as the temperature drops, pay attention to the humidity level. High humidity with cool temperatures can create condensation on and in the can of paint.

Condensation adds moisture to your paint mixture. When this happens, the chemical composition of your paint changes and can affect how it dries. Even when using water-based paint, any additional moisture can ruin the can of paint and your paint job.

Heat Causes Paint to Dry Too Fast

In ideal conditions, a fresh coat of paint dries from underneath first. The outer layer is the last to dry.

However, when the temperature is hotter than ideal for a paint job, the top layer can create a “skin” over the underneath layers. When this happens, air can’t get through to dry the paint thoroughly and evenly.

Paint that dries too hot and fast will develop blisters, cracks, and peeling. You might paint a wall in record time, but the paint’s cure will require you to start over if the conditions are too warm.

Put the paint and brushes away when the temperatures reach 90° Fahrenheit or higher. Wait for the temperatures to drop in the spring or fall. Test the exterior surface with your palm before trying a layer of paint.

If you can’t keep your palm on a wall for more than a few seconds, the surface is too hot to receive the paint and dry well.

Don’t Let Temperature and Humidity Ruin Your Paint Job

Navigating temperature and humidity makes it challenging to know when to paint your Florida home, but don’t rush it. Upgrading your property with a quality paint job is worth it, especially if it’s time to sell.

Need help with the buying or selling process in 30A? Contact us.