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Old 09-09-2012, 03:48 AM   #1
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ridge vent opening cut too big


Howdy,
I think I cut my ridge opening a little bit too big. Is there a way to make the opening smaller short of replacing the boards. This is a new toolshed in progress and does not have roofing shingles or felt paper installed.

So far, I have the roof boarded and the ridge vent opening cut (in various sizes) from 1.25" to 3" on each side - newbie mistake.

Any advice is very much appreciated.

Thanks

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Old 09-09-2012, 09:12 AM   #2
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ridge vent opening cut too big


Other than replacing the boards, the only option I can think of is to find a ridge vent that is WIDER than most ridge vents. I don't know if such an animal exists but you could check with a roofing supply company.

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Old 09-09-2012, 10:17 AM   #3
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ridge vent opening cut too big


can I add another 1" strip and narrow the gap and then install the felt afterwards?
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Old 09-09-2012, 10:28 AM   #4
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ridge vent opening cut too big


With a 1' strip the hole will still be to big and it will be impossable to drive a nail into.
How wide is that last piece of sheathing?
If it's a full sheet or close to it, just measure down from the middle of the peak of the roof 18", snap a chaulk line, make a 3/4" deep cut and remove that part. Now install new piece the right width.

That cut was suppost to be 1-3/4 on each side from the peak.

http://www.lowes.com/cd_Install+a+Ridge+Vent_798471914_
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Old 09-09-2012, 11:08 AM   #5
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ridge vent opening cut too big


oh boy, I messed up big time! This is going to be much more difficult than I imagined. I'm not too handy with the circular saw so afraid that I may cut the rafters underneath sheathing.

I'll try to post pictures shortly.
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Old 09-09-2012, 11:13 AM   #6
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ridge vent opening cut too big


Not sure how you could do any damage if you just set the saw to 3/4 depth.
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Old 09-09-2012, 11:54 AM   #7
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ridge vent opening cut too big


OK, here are the pics.
Attached Thumbnails
ridge vent opening cut too big-wp_000376.jpg   ridge vent opening cut too big-wp_000377.jpg   ridge vent opening cut too big-wp_000378.jpg  

Last edited by kkhome; 09-09-2012 at 12:00 PM. Reason: Adding pics
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Old 09-09-2012, 01:03 PM   #8
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ridge vent opening cut too big


khome, how did you end up with such a variation of cuts on your sheathing? It looks as though you pieced the sheathing together? Usually you simply apply the sheathing and then snap chalk lines that meet the requirements of width for your ridge vent.........then you do as Joe said, you set your circular saw depth so that it DOES NOT cut into an rafters and follow the chalk line. If you put small pieces in place to cover the over cuts, you will find out that Joe is right........your nails going into the ridge vent will likely miss any solid wood.
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Old 09-09-2012, 05:35 PM   #9
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ridge vent opening cut too big


I'm a newbie and really this is my first big project. You are right that I pieced the sheathing together thinking that it would be easier to cut them while they are on the "ground" --- big mistake.

so, for now snapping 18" line, cutting it and adding another piece as Joe suggested, is that the only solution I have? Is the current opening too wide?

Appreciate your help.

Last edited by kkhome; 09-09-2012 at 05:38 PM.
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Old 09-09-2012, 05:44 PM   #10
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ridge vent opening cut too big


I think you should pull all the sheathing off and start over. The sheathing seams need to break on a rafter not in between them.

It would be pretty easy to walk you through on how to properly sheet that roof.
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Old 09-09-2012, 06:07 PM   #11
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Originally Posted by kwikfishron View Post
I think you should pull all the sheathing off and start over. The sheathing seams need to break on a rafter not in between them.

It would be pretty easy to walk you through on how to properly sheet that roof.
I'm planning on adding 4 more rafters (2 on each side) for those seams. How easy is it remove all the sheathing and what is the procedure?
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Old 09-09-2012, 06:36 PM   #12
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I'm planning on adding 4 more rafters (2 on each side) for those seams. How easy is it remove all the sheathing and what is the procedure?

The procedure is pulling nails, how easy it is depends on how many and what type of nails you used.

If you were to add rafters you would only need one per seam but that doesn’t solve your original problem.

I’d rather see you take a step backwards and do it right instead of pushing forward with a scab fix that would likely take the same amount of time and more materials.

How big is this roof?
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Old 09-09-2012, 06:39 PM   #13
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ridge vent opening cut too big


Look close guys, he layed the OSB vertical not horizontal.
It's all got to come off and be redone.
All seams must land on a rafter, there must be H clips between the rafters on the OSB to keep it from sagging between them.
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Old 09-09-2012, 08:02 PM   #14
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Originally Posted by kwikfishron View Post
The procedure is pulling nails, how easy it is depends on how many and what type of nails you used.

If you were to add rafters you would only need one per seam but that doesn’t solve your original problem.

I’d rather see you take a step backwards and do it right instead of pushing forward with a scab fix that would likely take the same amount of time and more materials.

How big is this roof?
The roof is 11x10 with a pitch of 3:12. I used Hitachi galvazined nail using a framing gun and there are a lots of nails -- I'd say 7 to 8 on each rafter.

I would need 4 rafters since there are 4 joints on the OSB.
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Old 09-09-2012, 08:07 PM   #15
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ridge vent opening cut too big


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Originally Posted by joecaption View Post
Look close guys, he layed the OSB vertical not horizontal.
It's all got to come off and be redone.
All seams must land on a rafter, there must be H clips between the rafters on the OSB to keep it from sagging between them.
Is it preferable to lay the OSB horizontal vs. verticle? I was going to lay it horizontal initially but the stupid voice in my head said that water may not run that way if it ever seeped in. So I layed it vertically.

What is an H clip, can you please share a link of the pic (if possible)?

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