Flex conduit through roof

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pls2000

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I'm in the process of replacing my roof mounted air conditioner. I just discovered the that original installer (for a previous owner) ran flex conduit through the roof to provide power.

What the did was to punch a hold in the roof, drag the conduit through it, and slather roofing tar over the hole. Now that area leaks.

Is the a way to provide proper protection and flashing for flex conduit penetrating a roof? Everything I've ever seen or done uses rigid conduit for the actual penetration, usual with a small junction box or pull box at the top.

Thanks,
++PLS
 

Stuff

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First - traditional FMC (flexible metal conduit) is not permitted since it goes outdoors which is a wet location. Liquidtight (plastic/nylon coated) is what is allowed outdoors.

What about sunlight resistant UF cable instead? Then run it over the roof edge and do a wall penetration.
 

Reach4

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Is the a way to provide proper protection and flashing for flex conduit penetrating a roof? Everything I've ever seen or done uses rigid conduit for the actual penetration, usual with a small junction box or pull box at the top.
Another idea... I think a roof penetration, with a roof flashing replacing a shingle, stops rain at the roof.

Then maybe a 1-1/4 weatherhead could go atop the conduit. While 1-1/4 was the smallest I saw, there could be smaller. But their are other options... http://www.quickmountpv.com/products/conduit-penetration-flashing.html?cur=0 has this picture:
prodImg1-CPC.jpg


This is harder than the UV-resistant UF around the roof edge.
 
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Norcal01

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Look for a solar flashing perfect for 1/2 sealtite, I would avoid any roof jacks with a rubber seal as they are prone to failure.
 
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