Now here are a few things to get you started to see if you may have hail damage on your roof.
What does a roof jack look like.
Dented gutters downspouts.
If it doesn t have a corner and simply looks like the image below follow the second installation procedure.
Standard 2 by 10 inch lumber with fit into the channel on most roof jacks and should be available at any lumber yard.
If you can see a dip curve or swag on the peak when standing in the street your roof has a problem.
If a hailstorm has struck your area hail stone impacts will often show up.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
Nail the new shingles down with roofing nails so the nails are covered by the shingle above.
If it does follow our first installation procedure.
Roof lines should be arrow straight.
Look for dents and dings on gutters and downspouts.
Quick things that point to roof hail damage.
It might be something.
Cut roof shingles to fit around the roof jack and insert them under the existing shingles.
Ideally locate a rafter below the sheathing.
Use a hammer to bend the top edge of the soft lead roof jack down into the vent pipe.
Also before you start installing your flashing you need to look to see if the wall in question has a corner on the roof face as in the image below.
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.
A roof jack will not do you any good without planks of lumber to span them.