What Does A Roof Jack Look Like

Ideally locate a rafter below the sheathing.

What does a roof jack look like.

A roof jack will not do you any good without planks of lumber to span them. If it doesn t have a corner and simply looks like the image below follow the second installation procedure. 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. It might be something.

Cut roof shingles to fit around the roof jack and insert them under the existing shingles. 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. 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. 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. What causes a sagging roof line. Roof lines should be arrow straight. Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.