How Roof Shingles Are Installed

Install new flashing metal.

How roof shingles are installed.

Arrange the shingles so the ends and the tab notches do not lie directly above gaps in the shingle below. Overlap each row at least 3 to 4 inches. Start by laying asphalt felt or other underlayment over the roof. Install shingles from the lower left corner working to the right and also working up the roof slope.

Using your staple gun secure the felt to the roof. Using the chalk line snap a line between the two marks to get a straight edge. If you live in an area with inclement weather you should consider using a special ice and water protector. With one or two helpers you ll be able to shingle a 1 500 square foot roof in about two days.

Many pros shingle in a vertical line up the roof because it s much faster. Before you begin make sure you re comfortable measuring laying out a job driving nails and cutting with a knife. If the gaps lined up water could get directly onto the roof sheathing and then seep in through a nail hole. 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.

Pull the drip edge down about a half inch from that line to create a gap between the drip edge and the fascia board. 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.