Roof Grades & The Roof Grading Process

Roof Grades & The Roof Grading Process

July 17, 2023

The roof grading process is an important part of ensuring the overall quality and safety of a building’s roofing system. It involves evaluating the condition of the roof and determining its ability to withstand weather conditions, such as rain, wind, and snow. A proper roof grading will also help to identify any potential issues or areas that need repair, thus helping to extend the life of the roof and protect the building’s interior from water damage.


The roof grading process typically starts with a visual inspection of the roof. This involves a close examination of the roof’s surface, including the flashing and gutters. The inspector will also look for any signs of wear and tear, such as cracks or damage to the flashing. In addition, the inspector will check the roof’s slope and drainage to ensure that water is flowing properly and not collecting in any areas.


Next, the inspector will measure the roof’s age and overall condition. This will help to determine its expected life span and any areas that need repair. The inspector will also evaluate the roof’s ventilation and insulation, as these factors play a critical role in the roof’s overall performance.
Once the roof grading process is complete, the inspector will provide a detailed report that includes their findings and recommendations for repair or replacement. The report will also include a detailed assessment of the roof’s overall condition and its ability to withstand weather conditions.


In conclusion, the roof grading process is an important step in ensuring the quality and safety of a building’s roofing system. It helps to identify potential issues and areas that need repair, and provides valuable information that can be used to extend the life of the roof and protect the building’s interior from water damage. If you’re looking to have your roof graded, it’s important to work with a qualified inspector who has experience in this field.

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Roofs are typically given grades based on their condition and ability to perform their intended function, which is to protect a building and its occupants from the elements. The most common roof grades are:

A: An A grade roof is in good condition and is expected to perform well for 15+ more years. This type of roof may have some minor cosmetic issues but is otherwise in good condition.

B: A B grade roof is considered to be in fair condition. This type of roof may have some areas that need repair or replacement.

C: A C grade roof is expected to have a lifespan of 5-9 years. This type of roof is still considered to be functional, however maintenance is still required.

D: A D grade roof is also in poor condition and is expected to have a lifespan of 2-3 years prior to roof failure. A D graded roof has hit the window of restorability. This type of roof may have significant wear and tear and may need extensive repairs or replacement.

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F: An F grade roof is considered to be in failing condition and is in need of immediate replacement. An F grade roof has reached the end of its usable life.


It’s important to note that roof grades can vary based on different factors, including the age of the roof, the type of roofing material used, and the local climate. To get an accurate assessment of your roof’s condition, it’s best to have a professional inspector conduct a thorough roof grading.

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Contact Parsons Roofing Company today to request a roof inspection, as well as find out more about the grade of your roof. Parsons Roofing promises to cater to your roofing needs.

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