Some bicycles get rode into or through lots of deep water, other bicycles often get left out in the rain and foggy weather.
Any which way, bicycles can most definitely rust from the inside out, so are there any recommended ways to protect against the elements?
I have omnium frameset and it is coated out of the box. So as other suggested it exists. As for my usage, I decided to not worry about frame maintenance that much and just pay about 100€ for complete recoat in professional paint shop. I was bit surprised that it isn’t that expensive to get it coated, you have to disassemble it or pay 20€ more.