Plumbing vent stack

[eddieguy]

Would like to know what a good tool is to use for cutting holes in a metal roof for plumbing vent stacks And Possibly a flu for a gas burning fireplace heater

there is a new metal roof on the place and I would like to use a good tool for cutting it. If it requires I spend some money for the ideal tool for this I may do so as long as the tool is not crazy expensive

 

[billr]

It is called a "nibbler". Hand ones are under $20, a powered one will be more like $100, but be far easier to use to make well-fitting holes. Considering the price of metal roofing (standing seam?), I would splurge for the powered type to avoid butchering the roof...

 

[grcauto]

If you don't want it to leak you need to support the metal around it like patching a hole in drywall.

 

[billr]

Huh??? Use a roof jack (flashing). The flue itself can be loose, and should be to account for thermal expansion or other movement of the roof/flue..

 

[eddieguy]

Yeah I was wondering if I need to account for the metal expanding or not. I try to account for the possible factors to consider but sometimes I wonder if I’m overdoing it to the point it never gets done

I might spend the 100 bucks if it helps me not butcher the new roof. Guess I don’t have to be super skilled to use it

 

[eddieguy]

Case in point- the vent stack I assume is level and not sloped. So hope that doesn’t present a problem getting the hole right probably overthinking it to much

 

[billr]

Do you know what a "roof jack" is? They are made with a slope, for easy install on a roof.

 

[eddieguy]

Do you know what a "roof jack" is? They are made with a slope, for easy install on a roof.

Thanks after your post I checked them out online