5 0 out of 5 stars 2.
Using roof jacks existing roof.
Ideally locate a rafter below the sheathing.
Roof jacks are nailed to the roof directly over rafters for strength.
How to use roof jacks on existing roof.
Lift up the tab of a shingle where you wish to install the jack.
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.
The jacks must be properly nailed or leaks in the roof could occur.
Slide the upper tab on the jack under the shingle so that nail hole in the jack is barely covered.
Make sure to line up the jack perfectly with the rafter with the bottom butt of the rafter visible at the roof edge.
As roof jacks are easy to set up and remove they are ideal to use on various types of roofing project.
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.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
Speedi products bv arj 07 7 inch galvanized 1 2 to 7 12 pitch adjustable b vent roof jack.
When the jacks are properly nailed to.
The answer is based on the angle of your roof.
You will also need a flat and straight board in order to have proper balance.
Attach two jacks to the roof by pulling up a tab of one of the shingles sliding the top of the jack under it.
Step 3 nail the jacks securely.
However if you have a roof which has a steeper angle then you will need a lot more jacks in order to improve your balance.
For many people out.
It actually helps if you have more wooden boards already set up so you can move more freely and add more jacks in a horizontal manner.
If your roof has 45 to 50 degree angle then you can use two to three roofing jacks.
Akron adjustable floor jack model c 4 akron jacks floor jacks telescoping jack for temporary support size range 1 1 3 2 pack 4 3 out of 5 stars 359.