Q&A for How to Estimate Roofing Materials

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What is the purpose of roof vents?

David Bitan
Roofing Contractor & Maintenance Professional
David Bitan is a roofing professional, licensed contractor, and the owner and founder of Bumble Roofing based in Southern California. With over 12 years of construction industry experience, David specializes in restoring, repairing, and maintaining residential, commercial, and industrial roofs. With over 60 years of combined experience, Bumble Roofing provides easy, friendly services to structures including residential, commercial, industrial, multi-family, and government buildings along with hospitals, hotels, and churches.

David Bitan

Roofing Contractor & Maintenance Professional

Expert Answer

Roof vents allow for air flow so your roof doesn't get too hot or too cold. In extreme temperatures, a roof vent helps protect the integrity of your roof.

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Question

Is the square footage of a house the same as the roof?

David Bitan
Roofing Contractor & Maintenance Professional
David Bitan is a roofing professional, licensed contractor, and the owner and founder of Bumble Roofing based in Southern California. With over 12 years of construction industry experience, David specializes in restoring, repairing, and maintaining residential, commercial, and industrial roofs. With over 60 years of combined experience, Bumble Roofing provides easy, friendly services to structures including residential, commercial, industrial, multi-family, and government buildings along with hospitals, hotels, and churches.

David Bitan

Roofing Contractor & Maintenance Professional

Expert Answer

No, your roof will be more square footage than your house because a roof has slopes and pitches.

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Question

How do I calculate how much drip edge I need for a gable roof?

Mark Spelman
Construction Professional
Mark Spelman is a General Contractor based in Austin, Texas. With over 30 years of construction experience, Mark specializes in constructing interiors, project management, and project estimation. He has been a construction professional since 1987.

Mark Spelman

Construction Professional

Expert Answer

The drip edge metal is only used at the bottom edge of roofs - near the gutters. Measure the length and add 10% to find how much drip edge you will need.

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Question

I have a roof that measures 2550 square feet. How many bundles of shingles do I need?

Mark Spelman
Construction Professional
Mark Spelman is a General Contractor based in Austin, Texas. With over 30 years of construction experience, Mark specializes in constructing interiors, project management, and project estimation. He has been a construction professional since 1987.

Mark Spelman

Construction Professional

Expert Answer

You will need 82 bundles. Make sure to figure out the ridge cap material that you will need as well.

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