There are reasons why roof replacement costs differ. It could be because of the type of shingles, warranty and work. You have to know what the contractors have included in their estimate.
Warranty
You will find shingles in different styles and types of construction that can affect their life and performance. The anti-fungus shingles are treated with a chemical to prevent mold and mildew. Decorative shingles take skill to put on. Each one comes with a warranty. The warranty for some shingles could cover defects like leaks, defects and more. You have to know whether the warranty covers materials and labor.
How shingles are measured affects cost
Shingles are sold in bundles and roofs are measured in squares. Three bundles are one square. A professional can quote a price based on the number of squares to cover the roof. They will measure the roof before quoting a price. Lower estimates are based on putting the shingles over the old shingles. If the company is uninsured or unprofessional they will offer a lower price. They charge the same with shoddy work and no warranty. Insurance companies could refuse to pay for weather damaged roofs if a professional did not install it.
Materials
Another thing that effects cost is the price of materials. The cost differs on materials like wood and metal.
Measurements
The measurement of the roof will give you the true cost. Contractors usually measure by multiplying the height by the length in feet. Then they divide the square feet by 100 to get the number of roofing squares. For slanted roofs both sides are measured to get the estimation.
Labor Costs
This is one of the most important parts of the cost differential. If you are replacing an old roof with a new one the labor is expensive. If it is a wooden roof and the decking or fascia has to be replaced it adds to the labor costs.
You will want to look around at different companies and their pricing. Look at the charges for repairing or changing the roofs. The next thing would be to meet with the people you have chosen. This is the only way you can really judge their outlook. This way your instincts can tell you if they are right for the job. You should get a gut feeling about their work. The estimates give you an idea of costs but the meeting gives you the right choice of contractors. Remember roofers salaries can differ due to location. The wage now if $18.21 an hour. The lowest ten percent make $10.59 hr. The highest are paid $29. 14 to $26.20 hr. New Mexico and Arizona have the lowest paid workers at $14.11 and $15.25hr.