i'm building a garage that will have a 7x18 structural ridge beam holding up the roof. the rafters are 2x12. What's the best way to connect the rafters to the ridge beam.... use birds mouth cuts at the top to bear directly on the beam, or use rafter hangers... see attached pic...

I like to think I understand the basic concepts of putting on a new roof, but never did it before. Would appreciate help with these questions and anything else you care to offer about the situation. As much as I am relatively handy, I do wonder if I should get a new shed rather than put the money into this one or should I get someone that's done a roof before (or anyone here care to help do this for $$?). This shed is 10 x 16'. 20 years old. I've ignored a water leak (from a branch hitting the edge?) for several years. As you can see from the pictures, I pulled off the old (mostly moss covered ) shingles. there was no underlayment. A couple of the sheathing have holes and need to be replaced. Others have smaller holes and one section is made up of several smaller pieces. q1) Based on the material - OSB? and amount of pieces to be replaced, would you just replace all of the sheathing? Don't have to worry about matching thickness of existing sheathing that way..And this will likely take me some time, so by the time I get to replacing pieces this summer, the good pieces may have gotten wet (even with the tarp). q2) what type of sheathing material would you use? q3) care to share thoughts on budget for material costs? Cost someone would charge to do the work? Things I think I need? Sheathing Underlayment? Skip it because it's a shed? Cover all of it because it's a small area / whatever I buy will be a big enough roll to cover all of it anyway? Starter shingles Shingles Cap shingles Roofing nails Drip edge for sides Drip edge for lower edge (there are 2 different types of drip edge?) Some T111 Some 2x3s Would you use pressure treated wood? That front area also rotted some of the 2x3s and T111. I can likely replace / reinforce the studs and siding, but my skills to make it look good aren't the best. The shingles were stapled down. I don't have a nail gun so rent / buy is another cost. q4) not sure if you can see from the pictures but they seemed to have glued the side edges of the shingles to a furring strip covered in aluminum? In the area with water damage, that furring strip / aluminum strip is knocked off. Should I use a drip edge? At what point do you say in your projects - yeah, I could do that repair, but it just doesn't make sense for me to do it (quality or cost wise) so I'll get a pro or get a new shed? Overall the shed is functional. I just don't want to put lots of money into the roof then have it still leak around the edges. [attach]105856[/attach] [attach]105857[/attach] [attach]105858[/attach] [attach]105859[/attach] [attach]105860[/attach] [attach]105861[/attach]