Middle jacks will help when extra material is loaded on the roof or when workers need to walk from spot to spot.
How to install roof jacks on existing roof.
Ideally locate a rafter below the sheathing.
I came across this steep roof and took this video about installing the roof jacks and the board before installing the roofing materials.
When the jacks are properly nailed to.
All nails need to be carefully driven fully into a roof rafter to ensure a safe installation.
Make sure to examine each driven nail and test each roof jack before placing any planking on top.
Use a hammer to bend the top edge of the soft lead roof jack down into the vent pipe.
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.
Once you have placed a couple of jacks on the roof you can now put wooden boards between them which you will be able to stand on while accomplishing your roofing project.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
Installing roof jacks make sure they are on the joists and not just into the sheeting.
Nail the new shingles down with roofing nails so the nails are covered by the shingle above.
For many people out.
Once you have worked on an area of your roof as much as needed you may add more roof jacks in order to access the higher parts of your roof or you.
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.