Home>Discussions>EXTERIORS>Roof flashing fix needed
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cubangt
Roof flashing fix needed

Its been bothering me for a while now, but tired of looking at it, based on the attached pictures, can anyone offer suggestions to repair what is there now or replace and do it right..keeping in mind that at this point im not looking to hire anyone for this right now..

its about 18ft of this above my garage that I need to fix, if we get up in the attic above the garage you can see out because its pulled away..

thank you

dj1
Re: Roof flashing fix needed

We can't see what's behind the siding, but I would guess that there is no flashing. The proper flashing will be like an L, but with a 120 degree instead of 90 - to fit over the slope.

This flashing has to go behind the siding and the house wrap and over the shingles. But since it's not practical at this point, I would attach it to the siding with a good size bead of roof tar and over the shingles. It won't look 100% perfect but it will stop the water.

Can't do it? hire a roofer.

cubangt
Re: Roof flashing fix needed

well here is what I know.. before we bought the house, the roof was replaced the year before. When we had the inspection nothing was noticed or brought up by the inspector. As the years go by, the flashing has pulled away, the flashing is behind the siding, but what bothers me the most is that instead of replacing this 18ft or so of flashing when the roofing was done, they left and reused the existing one and seems didn't secure it correctly.

if the flashing goes behind the siding and over the roofing, im assuming that securing it to the roof is not meant to be done with nails, correct?

we wont be replacing the siding anytime soon, so replacing the flashing with new one is not possible at the moment, but fixing with tar sounds like a plan..

can I get the tar, put some under the flashing that is lifted, weigh down the flashing to help hold it in place and then tar over the top to help seal it all?

thanks

dj1
Re: Roof flashing fix needed

Let's take one step backwards: do you have any leaks up there?

cubangt
Re: Roof flashing fix needed

Well here is the thing, if you go into the garage and look at the ceiling, im pretty sure every inch of it has some form of water damage, at one point I was tempted to just remove it all and have open attic space above the cars.

So to answer your question, not sure I have a current leak, but there has been leaks at some point in the past.. and because the opening is wide enough to see out from inside the attic, I can only assume that some amount of water is getting into the attic space and down onto the sheetrock / ceiling of the garage.

im merely looking for a semi temporary fix that will help clean up the look from outside but helping prevent further damage until the roof and siding get replaced at which point the pros can fix and do it the right way.

garybrown176
Re: Roof flashing fix needed

One common issue with roofing maintenance is the replacement or repair of what is called roof flashing, or simple flashing. Roof flashing refers to sheet metal installed at any breaks, joints or edges on your roof to prevent leaks. Most flashing is composed of aluminum or galvanized metal. This means that roof flashing repair can typically be cheap and easy to do, although there are some mistakes to avoid.

dj1
Re: Roof flashing fix needed

For a fast and temporary fix, go back to my first answer.

An L shape flashing, attached to the siding with tar in between. Use roofing nails to keep it in place.
The rest of the flashing will rest on top of the shingles, also with tar in between. Use roofing nails to keep this part in place.
Since you need 18' of flashing, you can use two 10' long pieces, just tar in between where they join.

Like I said: may not be the nicest house on the block, but done right, it will stop the water at this area.

Good luck and send pictures.

Mastercarpentry
Re: Roof flashing fix needed

It looks like whoever cut the bottom of the siding used a dull hedgehog, not a saw :rolleyes: If you have a multi-master tool you can fix that and flash it together. Lay a longish 1/2" board down on the shingles for a guide then cut flat on top of that. Once done and the cut is straight, gently pry the bottom of the siding loose. Cut the "L" shaped flashing metal into strips about two inched longer than each siding board is long across the shingles. Install those like step flashing for shingles starting at the bottom. Be sure not to bend the metal- you may need to pull a nail or two in the siding or trim the flashing to get it in. As each piece goes in, use a tube of roof-sealant to make a bead the length of the metal, press it into place, the go up to the next one. The sealant ( I like NP-1 brand) is some very messy stuff that you don't want on you or the siding (it bleeds through paint). Once done paint or seal the cut ends of the siding. As long as the step-flashing laps well, it will take a large wind to drive water through it. Then next time you re-shingle, pull the siding and flash things correctly. I like a 3-step process: A wide base flashing under everything except the tar paper; step flashing on the shingles; and a colored cap flashing about an inch wide atop the shingles. All goes under the siding and is nailed there, never on or through the shingled part of the roof. If you seal with NP-1 under the cap flashing you're as water-resistant as a shingle roof can get.

As an aside, it's the flashing that makes for a good roofing job and that is where the cheap shinglers cut corners because doing it right takes time. What they leave will get them out of their labor warranty period and that's all they care about.

Phil

cubangt
Re: Roof flashing fix needed
Mastercarpentry wrote:

It looks like whoever cut the bottom of the siding used a dull hedgehog, not a saw :rolleyes: If you have a multi-master tool you can fix that and flash it together. Lay a longish 1/2" board down on the shingles for a guide then cut flat on top of that. Once done and the cut is straight, gently pry the bottom of the siding loose. Cut the "L" shaped flashing metal into strips about two inched longer than each siding board is long across the shingles. Install those like step flashing for shingles starting at the bottom. Be sure not to bend the metal- you may need to pull a nail or two in the siding or trim the flashing to get it in. As each piece goes in, use a tube of roof-sealant to make a bead the length of the metal, press it into place, the go up to the next one. The sealant ( I like NP-1 brand) is some very messy stuff that you don't want on you or the siding (it bleeds through paint). Once done paint or seal the cut ends of the siding. As long as the step-flashing laps well, it will take a large wind to drive water through it. Then next time you re-shingle, pull the siding and flash things correctly. I like a 3-step process: A wide base flashing under everything except the tar paper; step flashing on the shingles; and a colored cap flashing about an inch wide atop the shingles. All goes under the siding and is nailed there, never on or through the shingled part of the roof. If you seal with NP-1 under the cap flashing you're as water-resistant as a shingle roof can get.

As an aside, it's the flashing that makes for a good roofing job and that is where the cheap shinglers cut corners because doing it right takes time. What they leave will get them out of their labor warranty period and that's all they care about.

Phil

=================
Phil, thanks for the reply and suggestion, but in fact the area you are referring to that isn't cut straight is in fact the flashing pulling up and away from the shingles.. not the siding, the siding is actually cut straight and for the most part all angled the same.. but I can see about trying your suggestions.. as im trying to make some slight improvements to the front of the house this year until we can have everything professionally done.

Mastercarpentry
Re: Roof flashing fix needed

Thanks for the explanation- some things I see make me less than proud of my profession! I'm glad this wasn't the case here. Since it's the lower lip of the flashing which raised, the entire flashing will need to be re-broke (a new bend made) or replaced. What probably happened is the shingler lifted it too much and slid his shingles in- possibly pushing the edge up tightly. If there's no space to raise it you may have to cut the siding to do that job.

In my hometown they no longer allow more than one layer of shingles, but back when it was permitted the best roofers always allowed extra room where the flashing met the house so that another layer of shingles could go in without re-flashing. Hard to find folks looking that far ahead anymore :(

Phil

eman
Re: Roof flashing fix needed

I must be missing something. From the pictures I would consider it accurate to say that this isn't the neatest job that could have been done, but I see nothing there that tells me it is actually defective.

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