Flashing "Mushroom" vents?

bendiesel

I recently had a roofing company come to look at my chiminey flashing. In doing so, I was informed that all of my vents (mostly mushroom type), skylights, and otherwise, were not flashed correctly. I had a local handyman come and tell me the same thing.

Upon inspection, the roof has a layer below it, and the top layer was just cut around the protrusions.

I contacted the person who initially inspected my home to check it out (since his inspection report says nothing of the sort). After spending a few minutes on the roof, he said that the mushroom vents dont require it and he stands by his original inspection.

Can anyone give me a solid answer?

I can post pics later if needed.

Thanks in advance!

Ben

mae-ling

Please post some pics

tinner666

Ditto.

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Frank

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joecaption

Pretty common to see it done that way on a reroof.
If you do not ask for all new vents to be installed there just not going to take the time to remove what you have and just reinsall them.
One of the many reasons I refuse to do a roof over.

bcdemon

LMAO, how do you "flash" a box vent?
Sure the skylight and chimney need flashings, but a box vent?

The "flashing" on a box vent is known as a flange. Unless they planned on using step flashing up the sides of the vent and maybe a backpan on the topside

joecaption

http://www.bing.com/images/search?q=...049415&first=1

As you can see roof vents come with there own flashing, when you reroof there is no good way to just reflash the vent. It would need to be removed and reinstalled or replaced to do it right.

mae-ling

The term mushroom vent was throwing me off, never heard them referred to as that.

bendiesel

Not sure if i termed everything correctly... but here are the photos.

Attached Thumbnails

       

joecaption

Those look fine.

mae-ling

yep, looks ok

joecaption

If it was a new roof or one that had been stripped it would be wrong.

tinner666

Nope! Not good at all. Half of each vent should be on top of the shingles, Those are catching water and in less that a year will start leaking around every nail below them. Better get them fixed ASAP.

It doesn't matter whether or not the roof is one layer or 10, those are leakers. http://www.albertsroofing.com/Power%...stallation.htm

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Frank

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tinner666

BTW, you might want to install new flashing around that Velux SL since the flashing there has been filled with nail holes. Your roofer and the handyman were correct and the inspector should have known right from wrong in this instance. Refer him to me if necessary.

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Frank

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mae-ling

That's one of the reasons I will not go over existing shingles.
They paid for them to go over existing and they did.