How much will my roof cost in Granite City, Illinois?
Day after day the question arises “How much will my roof cost?”
You can easily measure your roof from the ground and once you know the number of squares you can multiply by $250.00 to find the price of your new roof. *This is including Landmark Certainteed shingles on a one layer 7/12 pitch roof or under*
Measure the ground dimensions of the house using a tape measure, and write down these dimensions. Multiply the length by the width to arrive at the ground area of the house. If the house has an irregular shape, measure each part separately, figure the separate areas and add them together.
Convert the area to roofing squares. Because each 100 square feet of roof is one roofing square, divide the total area from Step 1 by 100. The answer is the number of roofing squares for the roof.
Estimate the pitch of the roof. Roofs have one of three pitches: low, medium or high. A low pitch rises 3 inches every 12 inches of base horizontal length. A medium pitch rises 6 to 9 inches every 12 inches of base horizontal length. A high pitch roof rises more than 9 inches for every 12 inches of base horizontal length. Estimate the roof pitch by sight or calculate it with a level in the next step.
Calculate roof pitch by downloading a free app by pictometry on your mobile device. Use the pitch gauge by lining the gauge to the roof line this will give you the pitch of your roof.
Multiply the number of roofing squares for a low-pitch roof by 1.06 to 1.08 to get the square roof area. Multiply the number of roofing squares for a medium-pitch roof by 1.12 to 1.25 — or by 1.3 to 1.42 for a high-pitch roof — to get the square roof area.