While you ultimately need to know the overall price of your new roof, roofing contractors get to that estimate by adding up several factors. To deliver accurate cost estimate, roofing contractors do the following:
Measure the roof - Most measurements are obtained digitally, using satellite imagery or drone technology, and include the slope, peaks and overall complexity of the roof.
Do an inspection - With a thorough roof inspection, contractors are able to assess the condition of your roof and determine the project scope.
Recommend products - Next, your contractor will outline the best roofing system materials for your project (shingles, ventilation and accessories) and warranty options.
Calculate costs - With the information above, your contractor can bring all the costs together: labor, materials, warranty, and applicable fees and services (permits, preparation, clean up).