I've started a shed/workshop clear out/tidy up and uncovered some not so good woodwork inside in places I've not been able to repaint every few years - being close up to walls.
Clearly now a mistake. I've been able to get to the other end and side to paint occasionally and they are fine inside.
Anyone thinking of putting up a shed - here's a heads up of what to expect after about 15 years if you don't leave space to paint them.