New paint technologies have eliminated the need in the past for the maintenance of wooden frames.
As opposed to the frames of other materials, the wooden frames can always be kept fresh with simple care and cleanliness.
Even if, after many years, stains have been affected, wooden frames can be easily repaired and rebuilt as new at a very low cost.
This is also the major difference with the frames of other materials, as the latter are repaired with great difficulty or not at all and can undergo significant, irreversible, molecular alterations.
The lifetime of wood is averaged over 30-40 years. Here, it should be noted that wooden structures of historical monuments, which did not have all the precautions, are kept in perfect condition until today, thereby denying this lifetime and extending it even further.
Based on all of the above, we can easily conclude that the lifetime of wood is practically unlimited given its proper use and maintenance with a simple cleaning.
Source: xylinokoufoma.pdf