The lifespan of a roof depends on several factors:

• Material
• Shingle thickness
• Climate and weather conditions
• Proper installation

Traditional asphalt shingle roofs typically last between 20 and 25 years.  Slate, tile, metal, and copper roofs can last up to 50 years. 

At first glance, you can see common roofing issues such as: 

• Missing or loose shingles
• Sagging
• Exposed nail heads
• Cracked or curled shingles
• Shingle granules or debris in your gutters
• Dark or stained areas
• Water stains inside of the home
• Exposed roof components that look out of place
• Damaged or missing flashing
• Rotted or moldy wood

The cost of a roof depends on its size and shape, the type of materials used, and the price of labor in your area.  Chimneys, skylights, disposal, etc. also affect the overall cost as well.  

Typically a single-family home’s roof (walkable) can be replaced in 1 to 2 days.  

• Flashing around base is cracked, missing, or rusted
• Watermarks on your walls and/or ceiling near chimney
• Cracked or deteriorated mortar joints
• Spalling bricks (broken or chipped bricks)
• Cracked or melted crown
• Unusual white stain across the brick of the chimney (efflorescence) – sign of excessive moisture in the masonry
• Shaling flue tiles

Here is a checklist of what you should ask: 

• Is your company insured?
• Is your roofing company a BBB Accredited Business?
• Will there be a written contract?
• How does the payment process work?
• Is your company licensed?
• Are you certified by a shingle manufacturer?
• Do you have references or reviews?
• What does the roofing warranty look like?