How Many Course Of Shingles In A Roof In

Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in.

How many course of shingles in a roof in.

To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Separate shingles approximately 6mm apart. 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. These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof.

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. 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. Spend some time selecting the best face of the shingles and then nail a double starter course. 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.

Lay a starting row at the bottom of the roof along the edge. Take care that the shingles are correctly aligned with consistent reveals. 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.

Use four roofing nails per shingle as. Step 8 the complete shingle roof. The starter course protects the roof by filling in the spaces under the cutouts and joints of the next row first course of shingles. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

Finally nail the first course of shingles directly on top of and flush with the starter course. 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. 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. Install four or five courses of shingles along the bond lines in an alternating pattern as shown.

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. It is best to use timber roofing battens and counter battens with a membrane to allow adequate air flow if necessary.