How Roof Shingles Are Installed

To start installing shingles line up aluminum drip edge flush with the edge of the roof and make a pencil line at the top on each end of the house.

How roof shingles are installed.

Overlap each row at least 3 to 4 inches. Arrange the shingles so the ends and the tab notches do not lie directly above gaps in the shingle below. Center a minimum 610 mm 24 wide minimum 28 gauge pre finished galvanized metal valley liner in the valley and fasten with only enough nails to hold it in place nailing at the edges only. If the gaps lined up water could get directly onto the roof sheathing and then seep in through a nail hole.

Overlap each metal piece by at least 150 mm 6 and use asphalt plastic cement under each section of overlap. Start by laying asphalt felt or other underlayment over the roof. Using your staple gun secure the felt to the roof. Install shingles from the lower left corner working to the right and also working up the roof slope.

You can install shingles by hand using a roofing hatchet but the work will go more slowly. With one or two helpers you ll be able to shingle a 1 500 square foot roof in about two days. Install new flashing metal. Before you begin make sure you re comfortable measuring laying out a job driving nails and cutting with a knife.

Using the chalk line snap a line between the two marks to get a straight edge. Pull the drip edge down about a half inch from that line to create a gap between the drip edge and the fascia board.