Hi everyone. I'm new to the forum and came in search of some advice. I bought a flat roof house about 3 years ago. It's from 1969 and has a style fairly typical of the modern era...there is a host of these beams that run through the home and extend out, thus making them very susceptible to weather damage and deteriation. When I bought the house, the ends were fairly well in tact but there were some cracks that ran through (I was told it was an issue with contraction and expansion since I'm in midwest winter/summer). Anyway, the ends have been damaged over the years and it's time to repair. I realize that it will be a structural issue after a certain point. I have painted these a few times but I need to do some serious preservation work on these. I was wondering what the best technique would be? I don't know exactly what kind of wood it is but on the interior they are flat black, which I'd maintain but it seems like most sealants have a high gloss to them. I used flat exterior latex the last time and it clearly didn't do too much protecting. Another issue is the cracks that are slowly appearing..some are getting fairly big so I'm wondering if I should use wood putty in those or something like the liquid foam 'Stuff' to put in there, sand down and then paint and seal. Here's an image of how these things look (this is actually one in better condition) It goes through 2 layers of glass (space in between) and runs the length of the house exposed on the interior. Much thanks in advance to anyone who is kind enough to offer some suggestions on how to properly paint/seal/rebuild this wood.