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While a complete roof replacement project is actually somewhat simple in its requirements, most homeowners will opt to hand over the responsibility of it to a seasoned professional. Why? There is a great deal more to the process than removing old shingles and laying down new ones. There could be a need to replace plywood, flashing, and cement. There might also be a call for the repointing of a chimney, repair of gutters, or resealing of skylights. All of these things are usually noted right away by the roofing professional.
For the purpose of this discussion we will explore the costs and materials needed for an asphalt shingled roofing replacement project. The average size of the modern home is 2200 square feet and it is usually comprised of two stories. This assumes a "footprint" of approximately 24'x45', and a roof pitch of 6/12 (meaning that the roof rises six inches every 12" it runs). We can assume that this roof (without various valleys or dormers) is going to cover approximately 1300 to 1500 square feet.
The average materials and prices for this project would include:
Cost to have roofing replaced varies greatly by region. Get free estimates from roofers in your city.