How Many Course Of Shingles In A Roof In

If these first shingles are not installed correctly there will be problems with the entire set of shingles.

How many course of shingles in a roof in.

To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. Lay a starting row at the bottom of the roof along the edge. These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your 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. 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. 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. 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.

Finally nail the first course of shingles directly on top of and flush with the starter course. Use four roofing nails per shingle as. In addition this starter course protects the roof by filling in any gaps. 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.

Then add 10 to the number to account for waste. The adhesive on the starter course seals the tabs of the first full course. Take care that the shingles are correctly aligned with consistent reveals. 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.

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. The starter course protects the roof by filling in the spaces under the cutouts and joints of the next row first course of shingles. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. 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.

Install four or five courses of shingles along the bond lines in an alternating pattern as shown. However shingles are packaged in a way that they are light enough for the average person to carry around.