Three tab shingles are usually 36 inches long.
How to install 3 tab shingles on a roof.
Before you go out and purchase your 3 tab shingles you will first need to figure out how many of them you will need.
Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof.
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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.
Install the shingles so that each one is overlapping the shingle directly below it which will conceal the nails.
They are designed to be installed with a 5 inch reveal.
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You will simply need to add up the total square footage of your roof and divide it by 100.
Cut your starter course shingles if necessary.
They are typically 36 inches long in total.
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Installing three tab shingles 1.
Measure your roof so you can be sure you buy the right amount of shingles.
However most people prefer the cutout lines to be aligned so they make straight vertical.
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3 tab shingles are the most common type of shingle.
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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Each tab is 12 inches.
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