How are paint companies e.g. testing their products for a substained amount of time succesfully? Are they really painting a house and then wait 15 years to see the result?

Question

How are paint companies e.g. testing their products for a substained amount of time succesfully? Are they really painting a house and then wait 15 years to see the result?

In: 24

Answer 1

Most durability tests in any field can isolate what causes aging and then try to simulate it.

So in the case of paint is probably intense UV light that simulates years of aging in a few days along with heat and cold cycles to test the paint as it stiffens.