Can you paint the house during the rainy season? Will there really be problems or is it just an old belief?

Rainy season It is often seen as a dangerous time for painting houses because many people have encountered or heard stories about Problems with the house during the rainy season Countless, whether it is Peeling paint problem, swelling and blistering. or even Fungi, algae that arise on the exterior walls, caused by moisture accumulation in the air and surfaces that are not completely dry, has led many to firmly believe that “painting during the rainy season is absolutely prohibited!” But in reality, these problems Can be avoided If you know how to plan like a professional, from preparing the appropriate surface, checking moisture levels, to selecting the right materials. Moisture-resistant primer Up to the use of house paint Premium grade that dries quickly and provides good mold protection.

In this article, Beger will help you to understand anew that painting during the rainy season It’s no longer something to be afraid of. If there is good surface preparation, use High-quality primer designed specifically for the rainy season. Along with the appropriate techniques, you can manage Problems with the house during the rainy season Confidently avoiding damage from peeling paint, blistering, or mold and mildew that often comes with this season, keeping your home beautiful even on days when the weather is not on your side.

What to do if you want to paint your house during the rainy season

1. Always check the weather before painting

Even though it’s the rainy season, it doesn’t rain every day. The trick is to check the weather forecast for the days and times when you plan to paint. Choose a day and time when it is not raining or when it is expected to rain the least. The best time is on days when it rains in the evening, as this allows you to paint in the morning and gives the paint time to dry and set in the afternoon to evening.

2. Estimate the drying time of the paint

Typically, for house painting using a system (water-based paint), it involves one coat of primer and two coats of topcoat, which requires at least 6 – 8 hours for the paint to dry (not including the painting time). It may take longer if you are painting a large area or need to set up scaffolding. For example, if you start painting at 8 AM, it must not rain from 8:00 AM to 4:00 PM.

3. Check the moisture level of the walls

After it has just rained, the temporary moisture on the walls will be over 90%, which is not suitable for painting. You should wait until the moisture level drops below 70% (depending on the weather at that time) or about 24 hours before applying a moisture-resistant primer from Beger.

4. Choose a high moisture-resistant primer for the rainy season

Regular primers can withstand moisture up to about 14%, but special primers with high moisture resistance can withstand moisture levels of 25% – 40% for internal moisture and 70% for temporary moisture, which is sufficient for painting during the rainy season. Beger recommends these three primers:

1. Beger Super Quick Primer B-2100, an oil-based primer with the highest moisture resistance from Beger, suitable for exterior use, dries quickly in 1-2 hours, withstands accumulated moisture up to 40%, and temporary moisture up to 70%.

2. Beger Pro Quick Primer B-1900, an oil-based primer suitable for exterior use, dries quickly in 3-4 hours, withstands accumulated moisture up to 35%, and temporary moisture up to 70%.

3. Beger Rain Quick Primer B-2900, a water-based primer suitable for interior use (can also be used for exterior), has a mild odor, dries quickly in 2 hours, withstands accumulated moisture up to 25%, and temporary moisture up to 70%.

5. Use high-quality premium house paint

Properties such as mild odor, quick drying, moisture resistance, and mold resistance are already found in water-based house paints, depending on how effective each property is. High-grade house paints (15 years and above) such as BegerCool Diamond Shield 15, BegerCool UV Shield, and BegerShield AirFresh Anti-Virus Gold Ion have various properties maximized, meaning they dry faster than standard-grade paints and are more resistant to various issues.

Even though we can paint during the rainy season, if it rains on that day, it is advisable to postpone the painting. Ideally, plan for a long-term schedule to paint in the summer or winter instead, as forcing to paint could lead to problems that are not worth the time spent fixing and having to repaint anyway, which might cost more. However, if it is absolutely necessary to paint and cannot be postponed, remember to follow the 5 recommendations we provided to help reduce the chances of paint issues.

Frequently Asked Questions

Q1: Can I paint the house after it rains?
A : Yes, it can be done but you should wait for the surface to dry completely for at least 1 day and choose a primer that is highly moisture-resistant to prevent subsequent problems.

Q2: Is it true that painting indoors is prohibited during rain?
A: Not true Painting indoors can be done, but you must ensure that rain from outside will not splash into the house and allow extra time as the paint may dry slower than usual, and there may be lingering odors.

Q3: Does painting during rain cause mold on the walls?
A: There is a possibility because moisture in the walls will be trapped. When painted over, the moisture cannot escape, which may lead to mold in the long term. It is best to paint after the rain and choose a high-moisture-resistant primer, as well as quality paint that has mold and algae-resistant properties.

Q4: Will painting metal during rain cause rust?
A : There is a high risk because metal and water should not come into contact. You should wait for the rain to stop, wipe the metal dry completely before painting, and choose oil-based paint or 2 in 1 metal paint to prevent rust formation.