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Roof inspection companies sometimes need to be licensed, but it depends on the state and local municipality where you live. You can contact your local building department to see if licensing is required and use Angi’s contractor license lookup tool to confirm that the company holds the proper licensing. It’s also a good idea to hire a roof inspection company certified by the National Roof Certification and Inspection Association (NRCIA), as this helps ensure you’re getting a professional and reliable inspection from a company that is recertified annually.

Roof underlayment usually lasts as long as the roofing material that covers it, as it’s not directly exposed to the elements. In most cases, roofing companies will replace the underlayment each time they install a new roof. In some cases, particularly with slate, clay, or certain metal roofs that can last 50 to 100 years, your underlayment may require replacement within that timeframe, especially if you start to notice roof leaks.

Yes, installing snow guards is highly recommended for metal roofs, especially if you live in an area with moderate to heavy snowfall. Metal roofs have smooth, slick surfaces that offer little traction, which can cause large, heavy loads of snow and ice to slide off all at once in a dangerous "rooftop avalanche."

This sudden release of snow can cause serious injury to anyone below and damage personal property, such as cars or landscaping.

Snow guards act as a barrier, holding the snow on the roof so it can melt and slide off in smaller, more controlled amounts. While low-slope metal roofs in areas with very little snow might not strictly require them, installing snow guards is a valuable safety measure to protect your family and property.

The average cost for a residential roof inspection is typically between $150 and $500, with some homeowners paying as much as $1,000 or more. The national average is around $225. Key factors that influence the final price include the roof's size and complexity, its accessibility (a high pitch can increase cost due to risk), and the roofing material, as specialty types like slate may require a specialist. Other variables are your geographic location, the inspector's expertise, and the specific services included in the inspection. To get an accurate estimate, it is best to obtain quotes from several reputable roofing professionals in your area.