It is attached directly to the decking along the bottom of the roof slope and above the underlay on the sides of the roof.
Bottom of roof.
Secure the screws but do not overtighten.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run.
There are two main categories of roofing.
Moulding that covers the edge of the roof and reduces the risk of water infiltration.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
This is a flat roof style with a greater slope and is most common on sheds porches and home additions.
However make sure that you do not nail into the tar strip.
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.
Install the roofing screws vertically along each rib in the panel.
Roof slope style.
Measure from the end of the level up to the bottom edge of the rafter.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
This roof style maximizes the amount of usable space in the attic or top floor.
That is the roof s rise.
The hip roof is also very popular in north america.
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.
Open valleys have metal flashing to protect this critical area of the roof.