DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > L flashing used on new roof ok?




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Old 12-12-2011, 04:06 PM  
oldognewtrick
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Originally Posted by willingtolearn View Post
By the way I have a good picture of why step flashing is better, but I'm still a little fuzzy on why L flashing is bad. Is the concern where water will flow under the shingles from the L flashing and find a hole thru the felt paper such as nail holes etc.

willing
Yep, thats it.


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Old 12-13-2011, 02:22 PM  
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My contractor said theres 2 problems. He said metal studs is hard to nail too, and you would have to nail the step flash high; so he would not be able to put blocking up without taking the hardie board up and the brown belly band(trim). He said he's coming tommorrow to double check that they sealed the shingles to the flashing.

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Old 12-13-2011, 03:55 PM  
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Default er....ok

Hmmmm, First of all you can't nail anything to steel studs. They get self tapping screws just like the ones I see in your siding picture. Overall The job looks OK, but he just needs a little more education on transition areas.
If this was my job, I would have screwed a piece of wood to the metal studs at the flashing area sitting on the roof deck. This would enable me to install step flashing against something solid. Then you can tuck a piece of counter flashing under the siding, and over the piece of wood and over the top of the step flashing.
If you look at your roof, there are trim pieces already projecting into the transition areas of the siding.

See what he thinks.

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Old 12-13-2011, 04:00 PM  
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And, you DO NOT nail step flashing into the wall. Let me repeat, you DO NOT nail step flashing into the wall! Step flashing is nailed into the roof deck at the top, outer corner of the step flashing.

Did I mention, step flashing is NOT nailed in the wall?

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Old 12-13-2011, 04:02 PM  
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Default yup

Like he said,,, but give it something solid to be pushed up against.
Did he mention not to screw it to the wall also?........

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Old 12-13-2011, 04:13 PM  
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And, you DO NOT nail step flashing into the wall. Let me repeat, you DO NOT nail step flashing into the wall! Step flashing is nailed into the roof deck at the top, outer corner of the step flashing.

Did I mention, step flashing is NOT nailed in the wall?
Agreed.,Reason,,,,Your structure is moving and fastening to the wall also complicates a repair and or reroof.A simple tear off can turn into a PITA when step is nailed to the wall.

Step flashing is better IMO than continous hands down.I have always fastened the shingle into the step flashing.Step,shingle,fastener.

I have used continous in the late 80's and early 90's but in the midwest and south east and along the gulf coast it has been single over continous.
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Old 12-13-2011, 04:59 PM  
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OK I'll bite, why do you not nail the flashing to the wall, when siding is applied it is about a inch or so above the roof and nailed thru the flashing? I have been told this before and could never make sence of it.

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Old 12-13-2011, 05:03 PM  
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Siding should be nailed so as to not interfer with the step flashing. When we have a reroof with vinyl siding the J chanel and edge of siding must be taken loose to get the old step out. Step flashing should not be reused, it has holes in it.

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Old 12-13-2011, 06:00 PM  
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Any day I learn something is a good day, Thank you.



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