When you are starting to think about an interior painting job, the last thing that you taking into account is the weather. You probably assume that because you aren't painting the exterior of your home, there is no way the weather will influence your paint job. Although a common assumption, this isn't the case. Different weather conditions while you are painting the interior of your home in will influence your paint job in different ways.
Humidity Will Quickly Ruin Your Paint Job
Painting in humidity is a surefire way to quickly mess up your paint job. High humidity will slow down the drying time of your paint, increasing the chances that it will become smudged or prevent it from curing properly.
If you are painting with a latex based paint, the humidity can cause the paint to bubble as it dries. Paint blisters, once they are dried, have to be carefully remove and painted over in order to give your wall a smooth finish. Paint blisters also often times cannot be removed without chipping the paint surrounding them. This unnecessary work can be avoided by ensuring humidity is low when you paint.
The best time to paint is when the humidity outside and inside is low. Ideally, it the humidity should be between 40 and 60% for the best paint job. It is a good idea to use a dehumidifier for a few days before you begin painting.
Too Cold Weather Can Make the Job Harder
If it is too cold when you paint your paint will start to thicken up and become sludge like due to its temperature dropping. This can create clumps which stick to the wall and are almost impossible to thin out.
Paint that has dropped in temperature also loses its ability to effectively dry. The cold makes the chemicals in the paint unable to bond, creating a soft, fragile paint job when dried.
The interior temperature of your home should not be colder than 50 degrees Fahrenheit. Painting in winter should be okay, as long as you paint when you know you can keep your home warm. You should also avoid painting on days where there is high condensation inside your home.
Too Hot Is Problematic, Too
If you have air conditioning and can keep your house at a cool temperature during the summer, you will be fine painting during the hot summer months. However, if you don't have a way to cool down your home, painting when the temperature outside is too high can be problematic.
If the weather is too hot, water in the paint used to thin it out and make it manageable to apply evaporates out more quickly. This will result in thick, chunky paint that is difficult to apply evenly to your walls.
Using waterborne paint to paint the interior of your home in hot weather can also be problematic. Waterborne paint contains very small spheres of a polymer that bind together to create a cohesive finish and durable film when dried. If this type of paint dries too quickly, as it would in hot weather, the polymer spheres won't bind together properly.
This won't cause any visible effects, but it will leave your paint susceptible to premature cracking and early decay.
For warmer weather, ensure that direct sunlight is blocked as you paint to prevent the paint from getting to hot and drying out quickly. The temperature ideally should not be higher than 80 degrees Fahrenheit.
The next time you are thinking about hiring an interior painting or painting your home yourself, make sure to check the weather for more information! You don't want to spend hours painting in less than optimal conditions only to end up with problems with your paint.Share