There is an old barn by me and on the roof it is spelled out 1885 in red the rest is gray and it must be slate. I assume it is original ? and it still looks good too.
I also see many many houses going with the steel roofs. Not exactly sure why ? If it is cost or the fact shingles don't seem to be made good anymore ? Is it standing seam the metal ones with no exposed screw/nails ? This would surly be better. Our pole barns all over time had issues with a leaky nail here or there. My house shingles are looking pretty bad. I'm very interested in all your reply's. Now if I only had some extra money to do something about it. I may end up with some buckets of tar and over coat it and try and get by ? But then will it help or make it worse ? Future tear off I'd think will be worse.