How Many Course Of Shingles In A Roof In

Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.

How many course of shingles in a roof in.

Finally nail the first course of shingles directly on top of and flush with the starter course. The starter course protects the roof by filling in the spaces under the cutouts and joints of the next row first course of shingles. Later you will need to lift up the outermost ends of the shingles on each side in order to slip in a shingle so don t drive the outermost nails now. Starting at the bottom of the roof map out a guideline with chalk.

In addition this starter course protects the roof by filling in any gaps. The adhesive on the starter course seals the tabs of the first full course. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. If these first shingles are not installed correctly there will be problems with the entire set of shingles.

The most accurate way to determine how many bundles of shingles you ll need is to hop up on a roof and measure each roof plane. How you get shingles before you start the calculation you need to be aware that shingles are sold by the square and by the bundle. Then add 10 to the number to account for waste. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof. Lay a starting row at the bottom of the roof along the edge. Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle. Install four or five courses of shingles along the bond lines in an alternating pattern as shown.

Use four roofing nails per shingle as. Of course there are some measurements which will need to be taken before you are able to calculate the number of roof shingles that you need. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof.

Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof. Once you have a bundle or square count for the main roof area you ll add additional shingles to account for waste starter shingles and extra shingles for hip and ridge caps.