You can use a putty knife or other tool.
How to change a roof vent.
To do this carefully pry up all the shingles around the vent itself.
Make sure not to damage them in the process.
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If the vent is too worn out to simply seal you may have to climb onto the roof and carefully remove the vent.
On the roof carefully peel off any old sealant around your existing vent to access the mounting screws.
Take off the vent.
To replace a damaged roof vent jack on your home.
You can then unscrew and remove the old vent.
Pry up the old jack and remove it by pulling it up over the vent pipe.
This isn t normally the kind of video i put out but i got bored changing the vents in my camper so i filmed the last one and made a how to video.
Plenty more videos t.
Slide a new roof jack sized to fit your vent pipe.