Ideally locate a rafter below the sheathing.
Roof jacks on existing roof.
Slide a new roof jack sized to fit your vent pipe over the pipe.
Roofers friend the ultimate roof jack removal tool and roof repair tool.
Secure the new roof jack to the roof decking with roofing nails.
As roof jacks are easy to set up and remove they are ideal to use on various types of roofing project.
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How to use roof jacks on existing roof.
Cut roof shingles to fit around the roof jack and insert them under the existing shingles.
Determine the best place to fasten your first roof jack.
You can usually feel sheathing nails which are driven into rafters through the underlayment attach a jack by driving two 16d nails never roofing nails into a rafter.
Placing the first roof jack.
Here is the list of steps on how to use roof jacks in order to get it installed and worked properly while you work.
Others often prefer to place the first one at the edge of the roof.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
For many people out.
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Pry up the old jack and remove it by pulling it up over the vent pipe.