Need to re roof with shingles. Well, I have your answer right here. First assess the need for tearing off the current shingles and possibly decking the roof. Assuming you just need to add a layer of shingles you’ll start by cutting a row to the height of the visible part of the current bottom row of shingles. Nail the shingles along the top edge using roofing nails, 3 or 4 per shingle. For all the rest of the rows you’ll use full shingles. just butt them against the bottom edge of the current shingle row and nail through the middle of the shingle, it should also pierce the top edge of the new shingle in the row just underneath. When nailing the head of the nail should rest on top of the shingle. if its pressed into the shingle then the shingle will pop free, just nail right next to the mistake. For the ridge shingles you can either cut standard shingles into sections or buy specific ridge shingles. you can’t use the profiled shingles for ridges. You really need to borrow a how-to book from the library. It will explain all the steps with handy pictures and also explain about flashing.
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