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Are paints that last 20 or 30 years really okay??

2024年3月14日 12:47

Having been in the painting industry for a long time, I'll tell you everything: 30 years ago, there were even places that used logs for scaffolding. They were applying paints that were inferior to what you find in home centers today.

They just exposed them to 20 years' worth of UV rays and rain in a short period at a research lab.

If they had been researching for 20 or 30 years, I'd understand, but check the founding dates of the paint companies selling these! They are mostly companies that were just established recently. If such places could make them, the long-standing, publicly traded Japanese paint companies would have made them long ago!

Japan is a country prone to earthquakes. You never know what will happen tomorrow.

With COVID and earthquakes, you don't even know if you'll be alive in 10 years, so is there any point in spending a lot of money on exterior wall painting to make it last 20 or 30 years?? You won't even last that long before then.

If you apply the primer and topcoat carefully, even commercially available paint will be fine.

No matter how expensive the paint you use, it's meaningless if the paint is applied too thinly. Even with cheap paint, if you apply the primer properly and paint it correctly, it will last a long time.
It was a neighbor's house, and I didn't want any complaints, so I applied the leftover material 10 times; 20 years have passed, and it still hasn't rusted.

If you have the money, leave it for your children or grandchildren.

Paints might have improved, hypothetically.
However, the craftsmen who apply them have a low skill level. They are raised without time for training because the prices are low, and then they go independent again.
The painting industry is one where anyone can work as long as they have a car.
It's better to repaint on a 10-year cycle using cheap silicone paint for about 700,000 or 800,000 yen. What would you do if you spent 3 million yen on repainting and then a magnitude 9 earthquake hit the next day and the house collapsed??