ok I screwed up ordering my meal roofing and its 7" short of the peak. They will not take it back but said I could use a wider cap that hangs over like 11" on each side.

This would give me about 4" under the cap is this ok ?? I dont want rain to blow up and in. Also what keeps the bees from making nests up under the cap ?

Thanks
Kevin

Are the tops of the panels turned back, as in a back stop to inhibit water from being blown upwards on the slope of the roof?

If not, then order over-sized J-Channel metal to go under the top edge of the panel and extend far enough up the roof to achieve the proper and desired distance that it should have been installed to. Prior to screwing or pop-riveting them in place, apply a 1/4" bead of Geocell sealant sandwiched in between the two metals.

Good Luck on fixing the error.

Ed
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Hi,

Your Z-bar stops wind driven rain.

what is Z-Bar ??

cvcman wrote:

what is Z-Bar ??

Closures.
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humm clousers ?? I want to keep the rige open so if I install clousers how can it get air thru ?

I thought the foam clousers went at the bottom ???

Hi,

The foam clousers will not vent.

cvcman wrote:

what is Z-Bar ??

Similar to what I was describing in the earlier post.

Ed
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The vented ridge is a different detail altogether.
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can someone who understands advise pls. The foam goes at the bottom, right ?

Then the ridge cap covers the ridge and down 4" or so on the metal roofing. I have my ridge cut out now.

So... what if anything needs to be done to stop wind blown rain from blowin up the roof ?

Also if you block the bottom of the metal with the foam how does the roof breath between the asphat and the metal with no airflow under the metal ?

I am starting to think I should have just re-roofed with an Archtech shingle over my one layer of three tab.

I am trying to stop the pine needles from working under the tabs of the 3 tabs I figured the metal would allow the needles to blow off or wash off or just lay there and not bother anything.

If I use the 12" cap to make up for my short metal will this be ANY problem ?

Thank you

Hi,

No it will not be a problem. The foam closures go at the bottom.

Your panels still will not travel all the way to the top, by the vent hole cut out, so blowing rain WILL get inside of it, unless you install the over-sized J-Channel or Z-Flashing as you were previously instructed.

Ed
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ok so even though my panels will be under the cap by 4" rain will still get up and inside ?? What do most installers do when they put on the metal.

I am not sure if I use oversize J wont it be higher than the perlings so the metal will still have openings for rain to got in ??

This is starting to feel like a nightmare. Again what stops the bees from getting uner the cap and nesting ?


I may just bag this project..

Hello,

If I am not mistaken http://www.thebryercompany.com/ makes a vented foam closure. We have several boxes where I work. I will get the name of the company Monday and let you know.BTW what type of panels are you using?
Here is an installation guide. It might not be for your panels but it has a ridge vent detail which you can study and see what people are talking about.
http://www.nuraymetals.com/nr/pdf/Installation_Guide.pdf

Hope this answers some of your questions.



Keith

The J-channel should be the same height as the ribs in the panel.

Ed
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