How Many Course Of Shingles In A Roof In

Separate shingles approximately 6mm apart.

How many course of shingles in a roof in. 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. 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. The adhesive on the starter course seals the tabs of the first full course. Lay a starting row at the bottom of the roof along the edge.

The starter course protects the roof by filling in the spaces under the cutouts and joints of the next row first course of shingles. Spend some time selecting the best face of the shingles and then nail a double starter course. 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. Take care that the shingles are correctly aligned with consistent reveals.

In addition this starter course protects the roof by filling in any gaps. 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. If these first shingles are not installed correctly there will be problems with the entire set 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. 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. Step 8 the complete shingle roof. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 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. 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. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below.

These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof. It is best to use timber roofing battens and counter battens with a membrane to allow adequate air flow if necessary.