Here is a list of questions you might want to ask your contractor:
· Will there be a porta-potty onsite?
o Contractors will sometimes put a porta-biff onsite if the job takes more than a couple days, otherwise the crew will take breaks and head to the nearest gas station/convenience store.
· Will you be using the same metal flashing/drip edge, or installing new?
o Standard practice is to install new metal.
· How many people will be on the crew?
o They usually put 4 – 8 people on a crew.
· How long will the job take?
o For an average size house, it should take one day. They try to number their crews so they’re done by later afternoon or early evening.
· Do you pull the building permit?
o The contractor should take care of any permits.
· What steps do you take to protect my siding?
o The crews usually tarp sensitive areas, and lean sheets of plywood up against the siding to protect it.
· Are the materials loaded on the roof by hand or crane?
· What kind of warranty will I get?
o The homeowner should be a written warranty; for example, 30 years on products and 2 years workmanship.
· How is the payment handled?
o Standard procedure is to pay up to 50% down and balance upon completion. If there is a small detail that needs to be completed(called a punch list), like a piece of siding replaced, the homeowner can deduct an appropriate amount from the balance (maybe $200) and pay that amount when the detail is completed. If insurance is involved, it’s a whole different deal. (See video and post about insurance projects)
· Do you recommend better ventilation for my attic?
o Now would be the time to address ventilation issues.
· Are your crews certified by the manufacturers?
· Is the crew prepared for surprise precipitation?
o They should have a tarp on hand just in case.
· What is the process to ensure proper installation of the roof?
o They should take pictures of completed stages.
· Any recommendations for existing skylights (if there are any)?
o Older skylights should be re-flashed or replaced. Old school carpenters will tell you there are two types of installed skylights: those that leak and those that will leak in the future!