The most common questions we get about roof replacements are regarding cost. There are a number of factors that contribute to the cost of a new roof. Here are a few of them:
Pitch of the roof
Higher pitched roofs require safety equipment, more materials, and a longer time to complete. A roof with a 7:12 pitch or higher isn't walkable and will require safety equipment to insure roofers aren’t injured in the installation process. A 7:12 pitch means that for every 12 inches it runs horizontally It raises seven inches vertically.
Number of layers of existing shingles
Typically no more than two layers of shingles should be on a roof before a complete tear off and replacement; although, depending on pitch up to three layers might be used. The more layers of existing shingles in place, the higher disposal and labor costs.
Size of the roof
The larger the roof, the more expensive the job. But how do they break it down? Each “square” of roofing material is based on taking the square footage of the roof then dividing it by 100. So one roofing square is equivalent to 100 sq. ft.
Roofing materials used
The cost of your new roof depends on which type of shingle you wish to use. Asphalt shingles are your cheapest option. Metal, wood shake, and slate roofs are the more expensive options. All offer different aesthetics, designs, and durability.
Shape of the roof
Roofs with many peaks and valleys will require more install time and shingles to ensure they are properly joined to prevent leaks. The most common roof shapes are gable and hip, but many modern american homes feature multiple roof shapes.
If the wood decking below your shingles is damaged it will need to be replaced before installing new shingles. This will result in more labor and material costs.