What is the best exterior paint for rain?
For most exterior painting jobs, water-based paint is the best exterior paint for rain. This category of paints includes acrylic and latex paints but doesn’t include oil-based alkyd paints. Water-based paints don’t trap moisture beneath them, which means they are less likely to crack, peel, or become discolored like oil-based paints when exposed to the elements.
If you’re looking for exterior paint that can withstand regular heavy rain and continue to look fantastic for years to come, choose a latex paint with an acrylic binder. This type of paint has better weather resistance than paint with a vinyl-acrylic binder.
In addition to being highly resistant to rain damage, water-based paints have the advantage that they expand and contract with the siding on your home, which can reduce cracking. This type of paint is also relatively quick drying, taking up to six hours to completely dry, compared to the much longer drying time of oil-based paint.
Oil-based alkyd paint is the best choice for metals that rust, as it can protect them from moisture. However, on other surfaces, such as wood, it is less durable and weather-resistant than water-based paint.
If you are painting wood that has never been painted or stained before, you will need to prime the surface to protect it from the weather prior to painting. If you plan to use water-based paint, you can use a water-based or an oil-based primer. However, water-based primers aren’t suitable for use under oil-based paint. After applying the primer, wait until it is completely dry before you apply your chosen exterior paint.
Finally, you should never try to apply exterior paint in the rain or when rain is in the forecast. Rain can wash away paint while it is still drying, leading to a streaky appearance.
How do I paint the exterior of a house during rain?
Paintzen does not recommend to paint during the rain. Bad weather can seriously damage your new paint job, creating streaks and drastically reducing the life of your paint.
If a sudden rainstorm is headed your way when you’ve already begun painting your home’s exterior, what should you do? If using acrylic paint, it needs to dry for two hours before the rain starts to fall, and even longer if heavier rain is on the way. Oil-based paint, on the other hand, needs even longer to dry. It’s best to use this type of paint at least 24 hours before rain is in your area.
The siding of your home may have eaves and soffits that provide protection from the elements and most paint can endure a short shower without streaking or washing off completely.
However, heavier rain poses a bigger problem. The key is to plan accordingly and check your local forecast for up-to-the-minute weather updates in your area.
The type of paint you use will also dictate how long you can wait to paint your home after it has rained. As a general rule, acrylic paint can cover siding that feels dry when you touch it. Apply oil-based paints need after the surface has been dry for at least a day. Check the label on the back of your paint, to learn the recommended drying time.
In addition to rain, other types of weather affect the quality of your paint job. Excessive wind can dry the paint on your home too quickly, and dust particles impact the quality of the finish. Even sunny weather can be problematic. Paint can wrinkle in the heat when the siding of your home is in sunlight, so try to paint each side of your house when it is not in direct sunlight.