How does your pricing work and what is the cost?
Cost is dependent on the house, such as how many stories you have. The higher the house is the more labor there is involved in getting up to the roof. Pitch is also a factor. How safe is it to walk on, is it on a big angle?
How many layers needing to be removed factors into how long the job will take. Cost per square foot also includes the material chosen. Shingles have a different cost than tile or metal. Removing and replacing bad decking is also included in the cost of replacing a roof. Additionally, the square footage of your roof is very different than that of your home. A ranch style home will have more roof square footage than that of a two-story house.