They are designed to be installed with a 5 inch reveal.
How many tabs should you use on a roof.
Some roofers install shingles so the cutout lines describe a slight angle as you look from the bottom to the top of the roof.
Standard roof installation requires four nails per shingle.
This can be done from the ground by taking the measurement of the length of the house and adding the length of the overhangs to it.
If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet.
This is a standard three tab shingle.
Generally regular shingles are cut straight through the tab.
You make your own cap shingles if you re roofing material is the standard three tab shingle.
Use a heavy duty utility knife to separate the shingles into thirds by cutting them at each tab.
To use this method you will need to measure the length of the eaves on each of the roof planes.
However placement of the nails is the most important in any roofing job.
Three tab shingles are usually 36 inches long.
However most people prefer the cutout lines to be aligned so they make straight vertical lines.
Standard roofing tools like a hammer and roofing nails are all you typically need to cap a roof.
To do this you need to note that one tab will be equal to 1 foot.
Here s what a three tab shingle looks like.
The rationale behind the number is that in most cases four nails are the right number of nails to do a quality job.