Its drainage and vent functions are actually two systems.
Vent pipe roof anchor.
They dont want to drill holes in the roof for an anchor 2.
Why plumbing air vents are important.
In many an older home this drain pipe is perhaps 4 inches in diameter and stays that size all the way through the roof.
Inside diameter black new construction or reroof thermoplastic vent pipe roof flashing model pb 312 4bk 19 97 19 97.
Oatey retro master roof flashing 1 4 in to 4 in x 8 in epdm rubber vent and pipe flashing.
I was just reading the thread about jonathan ellis and saw that one of henrys guys just fell off a roof and thought it would be a good time to post this.
The main vent is stack is often but not always a continuation of the soil stack which is a 3 or 4 inch waste pipe that extends vertically down from the uppermost bathroom to the sewer.
You have to carry some black jack with you and fasten it up under the tabs black jack the holes and put the tab back when done as to not cause a leak.
Free delivery with 45 order.
The main option that osha like on shingle roofs is a screewd in achor point.
The vent stack is the pipe leading to the main roof vent.
The biggest excuse i hear about guys not using a harness or tieing off is that 1.
Its hard to find something solid enough to tie off to that will hold them on the ground.
With every roof you go on everyone is going to be in different condition new old poor shape etc.
For pricing and availability.
Oatey 1 1 2 in to 3 in x 15 in plastic vent and pipe flashing.
We charge for the anchors too 50 per anchor installed.
We always install permanent osha approved safety anchors on every roof over a single story low pitch and use ac s pipe anchor on low pitch roofs with accessible and properly placed vent stacks.
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I would not use a pipe anchor on a high pitched roof it will pull up as the pitch increases.
Ac s roof pipe anchor is not osha approved and he will tell you that himself.
It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system.
Sure you can pull on the pipe but you aint putting the force a 200 man free falling would be putting on it.
That peice of roof anchor can be the best built peice of metal on earth but you are putting more faith in the vent pipe holding secure.