How Many Course Of Shingles In A Roof In

Separate shingles approximately 6mm apart.

How many course of shingles in a roof in. Starter shingles are the initial shingle products installed on the roof just before the first course of the finish shingles which will comprise the visible parts of the roof. Use four roofing nails per shingle as. Step 8 the complete shingle roof. Lay a starting row at the bottom of the roof along the edge.

The adhesive on the starter course seals the tabs of the first full course. Since the starter shingles will be covered by the roof shingles it doesn t matter what color they are except in special situations see below. If these first shingles are not installed correctly there will be problems with the entire set of shingles. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

Spend some time selecting the best face of the shingles and then nail a double starter course. Install four or five courses of shingles along the bond lines in an alternating pattern as shown. 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. In addition this starter course protects the roof by filling in any gaps. These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof. 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.

Then add 10 to the number to account for waste. 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. 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. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in.

Take care that the shingles are correctly aligned with consistent reveals. 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.