I’m specifically referring to sloped, shingled roofs of residential homes
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If it only has one layer of shingles, we simply staple more of them on using 1″ staples (3/4″ staples, being smaller, would go faster out of the staple gun and shoot through the shingle). Start from the bottom and layer more on top going upwards, overlapping by half, until you get to the top. Then you have a special cap shingle that goes on to cover the top.
If it has two layers of shingles (ie, been redone once already), we rip it all off down to the plywood, then we staple on 30 pound tar paper using T50 staples (about like what you use for office paper). It comes in 3 foot wide rolls, so we start from the bottom and overlap it upward (like with shingles) all the way up to the top and over to the other side.
Most of the time when we tear the roof down to the plywood, we replace the drip-edge too. That is a long strip of metal folded longways down the middle to 90 degrees, and goes around the border of the roof. It goes underneath the tar paper.
After the tar paper, we apply the new shingles as initially described. The first row has to have what’s called a starter course underneath it. It comes on a roll and acts as the first “half shingle” that all the other rows overlap by.
You need a staple gun, an air compressor and hose, tin snips, a regular screwdriver (for unjamming the gun), a T50 stapler, a hammer (for ornery staples) and a razor knife for cutting the shingles to size.
Info: are you asking how to replace the roof?
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