They are designed to be installed with a 5 inch reveal.
How to install 3 tab shingles on a roof.
Install the shingles so that each one is overlapping the shingle directly below it which will conceal the nails.
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One square package is equal to 100 square feet of roof.
Installing three tab shingles 1.
When you reach the end of a row cut the last.
Three tab shingles are usually 36 inches long.
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Each tab is 12 inches.
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Before you go out and purchase your 3 tab shingles you will first need to figure out how many of them you will need.
Measure your roof so you can be sure you buy the right amount of shingles.
You will simply need to add up the total square footage of your roof and divide it by 100.
They are typically 36 inches long in total.
However most people prefer the cutout lines to be aligned so they make straight vertical.
3 tab shingles are the most common type of shingle.
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Architectural shingles are another option and are installed the same way as 3 tab shingles but give your roof more of a 3 d effect due to their varied shapes.
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Some roofers install shingles so the cutout lines describe a slight angle as you look from the bottom to the top of the roof.