I went to find out what hurdles may lie before me as I planned out the size of the open/covered area I want to add to the back of my detached 3 car garage. Turns out if I leave an inch between the new structure and the existing, I don't have to deal with zoning variances. Saves permit fees too, at least some of them. So now I will be erecting an open wall structure 16x35. The pitch of the property creates plenty of opportunity for height and I plan to take advantage of it. I should be 11 to 10 overall height with the pitch. I will use sonitube cement footings with galvanized brackets set inside them to obtain hurricane ratings and go with 6x6 posts 8 in all giving me 8 feet or so between posts. Questions are treated or not for the lumber? Some of the treated lumber seems to twist more often imo. For the roof I am debating using steel or possibly the opaque fiberglass. Not sure the fiber is intended or acceptable for roofing. I like the idea of letting light in with the fiber. Use is for, of course, firewood. But also storage of the Kubota and a pool table area. Currently I have an outside pool table setup. Not too realistic.
"Some of the treated lumber seems to twist more often imo." ... it sure can. 4x4s seem to be the worst culprits. If you get them installed and nailed up quickly tho, they aren't too bad. Leave them a day or two in the sun, and they can take off on ya... looking forward to seeing your shed MWN.
I built my lean to and used all treated lumber thinking the boring bees would leave it be. That was a waste money!
The neighbor at my previous home had a loafing shed for his horses with fiberglass for the roof. By the time we sold, that barn was several decades old, and the wind had been ripping up and blowing away the fiberglass, but, that was after years of deterioriation and severe gusts in the foothills of Colo....... Anyway, it was pleasant to be in there when I would babysit the horses with some light coming in, but it was also hotter in the summers compared to our loafing shed with a solid roof.
Treated lumber is generally wet when it's purchased, when it starts to dry it when the problems begin. When we use PT lumber in construction we know we have to set the lumber as quick as we can before it begins to move as it dries. If you do choose to use some PT that has some ground of concrete contact then set it before it starts to move.
