Ahoy! Roof Experts

[Allen42acj]

Trial and error..
Maybe Tim O would know the formula to work it out..
It is not going to look good..
I did some thing like that for a friend back in the 80s..Looks like a boat upside down..

[slatta]

figure out the angle in cross section, I don't know how to make a sloped ridge though

[louis]

Paul,

This would be easy to figure out in an elevation or cross section as Neal suggests.

...and sloped ridges are easy. Look at the baseline angle box.

[Allen42acj]

Guess you could keep it covered with a tarp..
Now I know how to get the angle,thanks..

[louis]

Way to go Allen.

[Allen42acj]

Thank you Louis
Still think it will look like an addition mistake..

[slatta]

I agree allen, just because we figured out how to do it does not mean we should do it

thanks to louis we'll have to live with it

[louis]

I did not say it looked good.

[Allen42acj]

Just my Chief skill are good

[tony33770]

Dimensions did help everyone - good work so far - how about the existing terrain to the rear, if there is negative 3' or so - try dropping the whole addition to hide the new roof lines behind the existing, seems like 3' plus/minus is what you need.

[RHD]

Personally, I don't like the way it looks. The stick builld transition between the original roof and the new trusses [if they are the same slope] is not that difficult. We used to make a ridge board cut square on the new truss end and a #/12 cut on the old roof, level it and nail it in. The cut "rafters" that have a ridge cut on the uphill end and a COMPOUND cut on the bottom. All can be done with a portable skill saw.
Snap string lines from the ridge for guide and nail a flat 1x8 onto the old roof right over the shingles. Cut right and left sides to match for lengths and make sure they are perpendicular to the ridge. I'll try and draw and post something if time.

[pktraylor]

Tony,
Flat lot but good idea.

John,
looking forward to seeing what you are suggesting.

Client is still evaluating possible roof plans.


Paul

[Curtis Johnson]

Paul:

Why not squeeze the overhangs and then change the pitch to match the other ridge height (you can halve the ceiling pitch to whatever it ends up being). The truss guys will build to any pitch you tell them. Since your customer is wanting a different roof pitch, give him one that architecturally looks better since I doubt that changing the width of your addition is in the picture (or shortening the wall heights).

[Allen42acj]

Not sure put I think they want that pitch to get the cathedral in it..
Is that one big open room?

[pktraylor]

Curt,

Two possiblities. I will address them today.

Allen,

Yes they want a vault ceiling so they can use trusses. The outside is 6/12 then the inside is 3/12.


Paul