flat roof to sloped roof

[wyoDreamer]

Wow, RPCHRIS, you do tend to overbuild! 2x10's that are sistered together, wow are you putting a second story on that run?

I agree with most of what you say, just the lumber sizes are a little much.

Our roof only spans 8 feet, so my husband use 2x6's as the roof rafters. He admits he bumped them up from a 2x4, because he was going to have to get up on top of it to screw down the tin. He is over 6 foot tall and well over 250 pounds. We used a 2x8 on each side to nail the joist hangers into, but that is because we cut the edge off to form a wedge shape to get a little slope on the roof for rain to run off.

I do agree with the screws instead of nails, they hold better and are easier to adjust if something is put together wrong.

 

[rpchris]

Quote:
I agree that you could do 2x6 if you are using tin roofing and spanning a short distance, but the original poster was talking about plywood and shingles. Those get really heavy real fast so the minimum I would do is probably 2x8. It looks from the pictures they would need to span about 10 feet. Again, the person should use their own best judgement.

 

[Vickir73]

I tend to side go along with RP

Yes, I think I will use 2X8 (as I'm gonna have to be the one who gets on top of it to put the shingles on and I'm a tad bit "fluffy" so it's gotta be able to hold my weight. And, yuppers, I use screws instead of nails. I think it holds better and it's just so much faster with the drill -- or at least until I can get a nail gun !!

I'm still not completely sure I understand the drip edge concept tho. (I'm kinda slow sometimes and things have to be explained to me like I'm a 5 year old

Does anyone have a close up of a picture?

 

[rpchris]

Quote:
A drip edge is a piece of aluminum that you fasten on the bottom edge of the roof BEFORE you put on the shingles. Some people also use it on the sides. It's pretty inexpensive stuff. It is designed so that water running off the edge of the roof doesn't travel back up under the shingles and rot out the wood.

It looks like this:

Here is what it looks like installed on my coop (white band directly below the shingles):

I hope that helps

 

[rpchris]

Also, if you do decide to do shingles then you'll need to slope the roof at least 2 to 4 inches (rise) for every 12 inches of distance (run). So if the roof is 10 feet wide, you'll want one side 20 to 40 inches higher than the other. Does that make sense?

Good luck and be safe!