What Does A Roof Jack Look Like

Standard 2 by 10 inch lumber with fit into the channel on most roof jacks and should be available at any lumber yard.

What does a roof jack look like.

Ideally locate a rafter below the sheathing. Roof lines should be arrow straight. A roof jack will not do you any good without planks of lumber to span them. 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.

If you can see a dip curve or swag on the peak when standing in the street your roof has a problem. 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. Nail the new shingles down with roofing nails so the nails are covered by the shingle above. What causes a sagging roof line.

It might be something. If it does follow our first installation procedure. 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.