You can use the dead area with a jack roof.
How do i use a roof jack.
Cut roof shingles to fit around the roof jack and insert them under the existing shingles.
Do step 3 a couple more times and keep placing the jacks at secure points on the roof.
How to use the jacks.
Degrees and safety most roof jacks depend on angles.
Ideally you should find the rafter first underneath the sheathing locate by feeling the nails.
Avoid using short pieces as the risk of a length of lumber tipping upward if you should happen to step onto the end of it is greatly increased.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
When installing or repairing shingles on a steep roof you need the support of roofing jacks which are brackets that hold a length of two inch scaffolding.
Standard roofs are around 3 12 to 6 12 pitches.
Then attach the tool into rafter by driving couple of 16d nails.
How to use roofing jacks.
Standard 2 by 10 inch lumber with fit into the channel on most roof jacks and should be available at any lumber yard.
Make sure that the roof jacks are evenly spaced from each other about 2 feet or so and from the edge of the roof.
Roof jacks make it easier to set roofing and increase safety for you by providing stable surface.
Remember that most shingles can actually be dilapidated and they can easily break.
Since there are various angles of roofs it is important to use a roofing jack according to the angle or pitch of the roof.
Ideally locate a rafter below the sheathing.
So you will need to place your jacks at least somewhere in the fourth or fifth shingle course.
Nail the new shingles down with roofing nails so the nails are covered by the shingle above.
You can usually feel sheathing nails which are driven into rafters through the underlayment.
Use a hammer to bend the top edge of the soft lead roof jack down into the vent pipe.