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In this article, we will introduce
the deterioration of exterior wall painting
We will explain the types of deterioration and what happens if it is left unattended!
Deterioration of Exterior Wall Painting
First of all, let’s introduce the deterioration of exterior wall painting!
Do you know the causes of deterioration in exterior wall painting?
The main causes of deterioration are simply two!
・Heat and ultraviolet rays from sunlight
・Deterioration of paint due to acid rain and salt
The main causes of deterioration are due to rain, wind, and ultraviolet rays from sunlight. As we will discuss later, the heat from the sun gradually destroys the resins contained in the paint, leading to a deterioration symptom known as chalking.
It is said that the service life after exterior wall painting is generally 10 to 25 years!
Of course, the service life varies depending on the type of paint used!
The service life of urethane-based paint is 6 to 10 years,
silicone-based paint is 8 to 15 years,
fluorine-based paint is 10 to 20 years,
and inorganic paint is 5 to 25 years.
Although there are various deterioration symptoms, the most obvious symptom is visible deterioration.
As deterioration progresses, the aesthetic appeal is lost, and the house may appear dull. If deterioration continues, it can affect not only the exterior but also the interior.
Ultimately, there is a risk of leading to water leaks, so caution is necessary.
Types of Deterioration in Exterior Wall Painting
Next, we will introduce the types of deterioration symptoms! There are various types of deterioration, but we will highlight the symptoms that require particular attention and are commonly seen!
Bubbling and peeling of the paint film
First, let’s talk about the peeling and bubbling of the paint film. Have you ever seen the exterior walls swollen or peeling off? This is due to the lack of knowledge and skills of the craftsmen when applying the paint, or due to aging deterioration.
When performing exterior wall painting, the first step is to carry out substrate treatment.
This includes high-pressure washing and scraping.
If substrate treatment is not performed or is done inadequately, it can lead to poor adhesion, resulting in paint swelling or peeling.
If high-pressure washing is not done correctly, dirt on the exterior wall will remain, leading to paint swelling or peeling later on.
If you leave the peeling exterior wall unattended, it will not be protected from rain, wind, and sunlight (ultraviolet rays), causing further deterioration, so caution is necessary!
Cracks
Next, let’s discuss cracks. These cracks are referred to as cracks.
The size of the cracks affects the degree of deterioration.
Relatively small cracks are called hairline cracks, but these hairline cracks indicate that the paint on the exterior wall is cracking, so caution is required!
This is a sign that it’s time to repaint the exterior!
Large cracks, unlike hairline cracks, increase the risk of water leakage and peeling of the exterior wall, so urgent maintenance is necessary!
Cracks can occur even when the paint film is new, due to earthquakes or vibrations.
The longer you delay repainting, the more the symptoms of deterioration will progress.
There is a significant difference in construction costs and the quality of the finish between repainting in the early stages of deterioration and after it has progressed, so caution is necessary!
Chalking Phenomenon
Next, let’s talk about the chalking phenomenon.
The chalking phenomenon refers to the powdery substance that gets on your hands when you touch the exterior wall. This is a sign of deterioration caused by rain, wind, and ultraviolet rays, where the resin in the paint breaks down, causing pigments to appear in a powdery form on the surface of the exterior paint.
This is one method to quickly check for signs of deterioration, so please give it a try!
Just because the chalking phenomenon is occurring doesn’t mean you need to repaint immediately; rather, it should be viewed as an indicator of deterioration.
If there is an abnormal amount of chalking, we recommend consulting a contractor!
If you neglect the deterioration of the exterior wall…
If you neglect the deterioration of the exterior wall, not only the exterior wall but also the interior of your home will deteriorate!
“It’s deteriorating, but it’s not bad enough to call for repairs.”
Many people think this way, but those minor signs of deterioration can eventually lead to more significant issues.
If the paint was protecting the exterior wall, but that paint deteriorates and fails, the exterior wall itself will be exposed to ultraviolet rays and rain, resulting in damage.
Most contractors offer free checks for exterior wall deterioration!
It’s perfectly fine to just have a check done.
It’s important to understand the condition of your home first. Let’s extend the lifespan of your home with maintenance before it’s too late!
Our company has exterior wall deterioration diagnosticians, so feel free to consult with us!
Of course, we will provide the diagnosis free of charge!
Methods for Repairing Exterior Walls
We will introduce methods for repairing deteriorated exterior walls. Choose a repair method that suits the signs of deterioration and carry out maintenance!
Partial Repair (Crack Repair)
First, let’s discuss partial repairs.
Partial repairs are effective for relatively small areas of deterioration.
Depending on the condition, even if the area is large, it may still be possible to address it with partial repairs, so it’s a good idea to consult with us!
Since it’s a partial repair, the costs will only be for that specific area, making it a recommended option for those looking to keep expenses down!
Depending on the severity of the cracks, repairs may be done using caulking or by V-cutting and repairing with mortar!
In some cases, scaffolding may be necessary depending on the location of the repairs.
If scaffolding is required, additional costs will be incurred, so please be aware of this.
If scaffolding is necessary, it’s recommended to bundle not only partial repairs but also other construction work to cut down on future scaffolding costs!
Kakeru Koumuten Co., Ltd. is happy to handle partial repair work as well!
Repainting
Next is repainting. The benefits of repainting include improving aesthetics, and another is that fine hairline cracks can be repaired during repainting by using fillers or surfacing agents!
Being able to change the appearance to your liking through exterior wall painting is also a great advantage. Exterior wall painting serves to protect the walls, and doing it at the right time can further extend their lifespan.
Repainting is a project that will eventually need to be done, so if you are going to do partial repairs, requesting exterior wall painting is recommended as it will be more cost-effective in the long run!
Exterior Wall Replacement
Next is exterior wall replacement! Exterior wall replacement is a method used when partial repairs or repainting cannot improve the condition. Of course, replacement is the most costly option. It may be suitable for those who want to renovate their exterior walls without worrying about the budget.
A common term you might hear is siding replacement. Knowing whether your home has siding can be helpful for future construction work!
We have articles that explain in detail about siding repair methods, so please take a look!
Exterior Wall Replacement Case Studies
Conclusion
How was it?
The exterior wall does not provide eternal protection. The exterior wall has a lifespan as well. Deterioration is something that will inevitably occur. To spend as much time as possible with your cherished home, we recommend regular maintenance!
Kakeru Koumuten Co., Ltd. offers free estimates and inspections! If you have any concerns regarding roofs, rain gutters, exteriors, or exterior structures, please consult Kakeru Koumuten Co., Ltd.!
We carry out everything from temporary scaffolding work to roof work and exterior painting completely in-house. We are confident that our costs, quality, and planning are unmatched compared to other companies in exterior construction!
We welcome competitive estimates with confidence!
You will be glad you asked us! We take every request seriously to ensure you feel satisfied with our service.
We look forward to your inquiries. Thank you very much.
For more helpful information about other exterior renovations, click here!
・Roof Repair | We have implemented measures against leaks through ridge cap replacement and eaves gutter replacement!
・Exterior Painting & Sealing Work Price List
・DIY Painting Plan | For those who want to try painting the roof and exterior walls themselves! We will only set up the scaffolding!
・What is the cost range for roof remodeling? Types of work and how to choose a contractor
・How much does exterior painting cost? Are there tips to reduce costs?
・Latest! Subsidies and Grants in Yokohama, Kanagawa Prefecture | About Reduction Systems
・What is the price range for rain gutter repair and cleaning? Tips on timing, fire insurance, and choosing a contractor!!
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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!
