How long does a new roof last?
It depends on the material, installation quality, and local weather. Asphalt shingle roofs commonly last around 20 to 30 years; metal roofs generally last longer. Regular roof maintenance and proper ventilation help a roof reach the longer end of its expected life.
How long does a roof replacement take?
On a typical home, a straightforward replacement often takes a few days. Larger or more complex roofs, metal roofing, bad weather, or decking repairs can extend the timeframe. A contractor can give a realistic estimate after inspecting your roof.
Can a new roof be installed over the old one?
Sometimes, but it is not always advisable. Layering a new roof over an old one hides the condition of the decking and adds weight. Many contractors recommend a full tear-off so the decking can be inspected and repaired. Ask the contractor what they recommend for your roof and why.
How much does a roof replacement cost?
There is no fixed price. Cost depends on roof size, pitch, complexity, material, tear-off, decking condition, and local provider availability. The only reliable figure comes from an inspection and a written estimate from a qualified contractor.
Do I need to be home during the replacement?
Not necessarily, but you should be reachable. The contractor will need access to the property and may need to discuss anything unexpected they find — such as damaged decking — once the old roof is removed.
What should I ask a contractor before agreeing to a replacement?
Ask what the estimate covers (tear-off, decking, underlayment, flashing, ventilation, clean-up), what material is being used, how decking repairs are priced, what the expected timeframe is, and what happens if bad weather interrupts the work. A written estimate that answers these questions is a good sign.