Bottom Of Roof

Roof slope style.

Bottom of roof.

Also place a nail 2 inches from each end of the shingle in line with the other. The run always remains constant at 12 inches. While not required by the code it is recommended by roofers and manufacturers. This is a flat roof style with a greater slope and is most common on sheds porches and home additions.

There are two main categories of roofing. Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. A flat roof has a slope of 2 in 12 or less.

Secure the screws but do not overtighten. This is also known as the barn roof as this style is often used on barns. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. It is attached directly to the decking along the bottom of the roof slope and above the underlay on the sides of the roof.

This roof style maximizes the amount of usable space in the attic or top floor. Install the roofing screws vertically along each rib in the panel. Lay a starting row at the bottom of the roof along the edge. Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.

The washer under the screw head should seal to the surface of the panel without bulging or shifting. However make sure that you do not nail into the tar strip. Moulding that covers the edge of the roof and reduces the risk of water infiltration. Open valleys have metal flashing to protect this critical area of the roof.

A low slope roof is anywhere from 2 in 12 to 4 in 12.