Is it true that exterior painting work cannot be done when it rains? What impact does it have on construction? Kakeru Koumuten Co., Ltd. explains!

Many people considering exterior wall painting might wonder, “What happens if it rains during the work?”

In this article, we will explain in detail the process in case of rain and the effects of performing exterior wall painting while it is raining.

 

What happens if exterior wall painting is done on a rainy day?

Basically, if it rains, exterior wall painting cannot be carried out.

So, what happens if exterior wall painting is performed on a rainy day?

Let’s take a closer look at the potential disadvantages.

 

Rain mixes with the paint

If exterior wall painting is done while it is raining, rain will mix with the paint.

If rain mixes with the paint, unnecessary bubbles can form, leading to color unevenness.

If the work proceeds as planned, the finish is expected to be quite messy, which is why reputable contractors postpone the work if there is even a little rain.

Additionally, painting in heavy rain can drastically reduce durability, potentially shortening the lifespan of the paint significantly.

This could mean that you may have to repaint within a few years of the initial painting, resulting in poor cost performance.

 

Drying of the paint is delayed

Exterior wall painting cannot be performed in environments with humidity over 85% or temperatures below 5 degrees.

This is because the drying of the paint will be delayed.

In exterior wall painting, it is common to apply multiple layers of paint, but low humidity and temperature make it inefficient to layer the paint properly.

 

Work stoppages continue

If it continues to rain, work stoppages will persist.

This will inevitably extend the expected completion date.

Upon hearing this, many may wonder,

“Will there be additional costs due to the extended construction period?”

Weather is something that cannot be controlled by anyone, so cases of being charged extra costs are quite rare.

In the case of reputable contractors, they schedule work with the expectation of rain causing work stoppages, so

there are almost no companies that have pricing like,

“If it rains for X days, an additional Y yen.”

“If work is interrupted due to rain, an additional Y yen.”

Conversely, if such pricing is in place, it could lead to significant charges, so we recommend avoiding that contractor.

 

What tasks can be done even if it rains?

Many people may worry that all processes will be halted due to rain, but there are several tasks that can still be performed on rainy days.

 

High-pressure washing

Before exterior wall work, we perform high-pressure washing to remove dirt and dust from the walls.
This task can be carried out regardless of whether it is raining or not, so you can rest assured.

However, in the case of heavy rain, the ground can become slippery and visibility may be poor, so we may suspend work for the safety of our workers.

 

Scaffolding Assembly

Scaffolding can also be assembled in light rain.
For exterior wall painting, work at heights is necessary, so we almost always set up scaffolding before starting the job.

However, if the rain is heavy, there may be risks associated with setting up the scaffolding.

Each piece of scaffolding has weight, and workers manually carry and assemble them.

If it is raining heavily, it becomes difficult to lift the scaffolding, increasing the risk of dropping it.

This makes it challenging to ensure the safety of our workers and raises the possibility of damaging the customer or their home, which may lead to a decision to postpone the work.

 

Installation of Splash Prevention Sheets

Before performing exterior wall painting, we install splash prevention sheets to prevent materials from scattering.
These sheets are made of mesh, allowing for installation regardless of whether it is raining or not.

Additionally, the risk of falling is significantly reduced, so we often continue work even on rainy days.

 

What Work Cannot Be Done When It Rains?

Next, let’s take a closer look at the work that cannot be done when it rains.

 

Painting

As explained earlier, painting cannot be done if it rains even a little.

Some may feel that

“I want you to continue the work as it is,”

but reputable contractors know that the quality will decline, so they absolutely will not proceed with the work.

 

However, there are some contractors who listen to the client’s thoughts and requests and continue the work even when it is raining.

At first glance, a contractor who continues working may seem kinder, but that is not the case.

Working on rainy days carries certain risks and may result in a finish that is not satisfactory.

When considering such matters, it can be said that contractors who pause work at the first sign of rain are more serious about their clients.

 

Protective Measures

When performing exterior wall painting, a process called “protective measures” is carried out to protect areas that will not be painted.

In this process, masking tape or duct tape is applied to areas that will not be painted, but if it is raining or there is high humidity, the tape does not adhere well.

For this reason, protective measures cannot be performed when it is raining.

Additionally, once the work is completed, the protective measures are removed, but this task also cannot be done if it is raining.

This is because paint residue may stick to the wall due to the rain, making it difficult to remove.

 

Points to Consider When Painting Exterior Walls During the Rainy Season

Finally, let’s discuss in detail the points to consider when painting exterior walls during the rainy season.

 

Request Based on Local Weather Predictions

By painting exterior walls during the rainy season, it becomes easier to coordinate schedules with contractors, and since it is a slow season, it also becomes easier to negotiate prices.

On the other hand, there is also the disadvantage that work may be postponed if it rains.

For this reason, it is important to predict the local weather when requesting exterior wall painting during the rainy season.

For example, if the rainy season is somewhat predictable, one method is to request work around the time when the rainy season is expected to end.

 

Choose a Contractor Who Puts Clients First

When requesting exterior wall painting during the rainy season, it is important to choose a contractor who prioritizes the client.

This is because some contractors focus solely on speed and deadlines, continuing work even with light rain.

Choosing such contractors can lead not only to dissatisfaction with the finished product but also to a higher likelihood of complications.

By selecting a contractor who puts the client first, you will receive suggestions for the best timing to start work and efficient execution based on weather predictions.

 

Conclusion

Exterior wall painting cannot be performed in most cases when it rains.

If work continues in the rain, there is a possibility that the paint will peel easily or that color unevenness will occur.

Therefore, when requesting exterior wall painting during the rainy season, it is essential to understand the risks and countermeasures associated with rain, and to choose a reputable contractor who prioritizes the client.

If you are unsure which contractor to choose, please feel free to consult Kakeru Koumuten Co., Ltd.

During this consultation, we will thoroughly explain the advantages and disadvantages of requesting work during the rainy season, as well as important points to consider, and propose the best work methods.

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For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

AAA is a young company with an average age in the early 20s, but our technology is second to none.

One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!

We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!