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

In almost all cases, no testing is needed because the pigments used now aren’t new, they’ve been around for decades, if not longer. So the amount they fade with time can be seen in real time.

UV-resistant additives or coatings still need testing though, so there’s that. In which case intense UV exposure that simulates years of sun is sufficient to pretty closely approximate real-world conditions.