12 Best Roofers in Baltimore, MD

Usually, roofing work falls under the category of home improvement, in which case your roofer needs to have a license from the Maryland Home Improvement Commission (MHIC). To be licensed with the MHIC, a contractor must have at least two years of work experience and hold general liability insurance.

Roof replacement costs about $7,479 in Baltimore. Things like how badly damaged your roof is, the accessibility of your roof, the material you choose, and the size of your roof can all influence the price.

The best time of year to have your roof replaced is spring or fall. Otherwise, colder temperatures in the winter or hotter temperatures in the summer can get in the way of getting the job done.

Signs that you need to replace your roof include the following:

• New leaks, particularly around skylights, exterior walls, gutters, vents, and drip edges
• Large patches of missing shingles
• Large areas of shingles are missing their granules
• Visible daylight coming through the boards
• Buildup of mold, mildew, or moss
• Damage from strong winds, hail, or heavy rain
• Roof is between 15 and 30 years old

A professional might either pressure wash or "soft wash" your roof, depending on the roofing material and how much cleaning is needed. Power washing is not recommended for certain roof types, such as asphalt shingles. To soft wash your roof, your contractor may use tools such as brushes and brooms, and chemicals such as detergent and bleach.