Pennsylvania multi family living gets new flat roof system installed
5-Star Commercial Roofing In Pennsylvania

Your Local Commercial Roofing Experts

  • #1 PA Roofing Contractors Since 1967
  • One-Stop Shop for all Commercial Roofing Needs
  • Fast Communication Response Time

Here at G. Cannon Roofing & Siding, our commercial roofing systems are supported by industry-leading warranties, the highest quality of roofing materials and coatings, and years of dedicated experience.

When you choose G. Cannon, you’re partnering with a trusted Pennsylvania roofing company known for superior service and exceptional results. Ready to tackle commercial roof repairs, install a brand new roof, or replace your commercial gutter system? Reach out to the pros today!

Get In Touch With Us!

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Trusted by the best

Kevin is an excellent roof inspector, very honest.

Jeannette Shrift

“If you want a perfectly done roof with a long warranty at a low price use these guys. These guys are the best.”

Malcolm Collins

“Great job on our roof! Thank you guys. Experience from start to finish was top notch.”

Concetta Gibbs

“Seamless experience from start to finish. Excellent work and great customer service. Our roof looks better than expected! Will absolutely recommend to anyone.“

Justin Spoont

“We had a fantastic experience with them. The job and subsequent follow up was handled to our perfect satisfaction. “

Simone Collins

Our Promise to You Is Our Best Work Every Time

At G.Cannon, we truly care about our customers. As home and business owners ourselves, we are proud to offer high-quality services and support throughout your next project. With decades of experience, you can count on our certified roofing contractors to deliver on results no matter the scale of your project. Whether you’re looking for a TPO commercial roofing system, a new shingle roof, or precise metal roofing installation for your home or business – we’ve got you covered.

Aerial view of TPO roof system install on pennsylvania commercial building

Commercial Roofing, Siding, Gutters, & More

Rely on the Top Commercial Roof Installers

With a legacy of excellence since 1967, our certified team of roofing contractors are proud to offer decades of expertise to support the longevity of your business. Don’t settle for lackluster roofing materials, shoddy roof installations, or less-than-average Pennsylvania roofing companies. When you’re dealing with roof damages – you want the best.

Our experienced team specializes in a variety of roofing systems, including flat roofing options (EPDM, TPO, & PVC), standing seam metal, asphalt shingles, cedar shake, and slate tile. We also offer advanced flat roof coatings (silicone & acrylic) and comprehensive roof maintenance plans to ensure long-term durability.

Trust us to be your reliable commercial roofing partner, dedicated to providing top-notch service and support for the long haul.

Partner With Us

Our process

  • Step 1

  • Contact Us

    Whether via email or telephone, our friendly representative is here to take your call and schedule your free estimate.

  • Step 2

  • Free Estimate

    Our skilled estimators will inspect your property and provide a clear and detailed estimate for the required services.

  • Step 3

  • Submittals & Site Meeting

    While the scope of work might change with each job, our commercial project managers will work with you to best understand the necessary materials, scope of work, and logistics for your commercial project.

  • Step 4

  • Schedule Job

    Our representative will communicate with you and you will be added to our work schedule at the earliest availability.

  • Step 5

  • Perform Work

    A G.Cannon representative will be available to meet with you at the beginning of the project. A qualified G.Cannon crew will perform the designated work on the scheduled date.

Contact Us

Whether via email or telephone, our friendly representative is here to take your call and schedule your free estimate.

Free Estimate

Our skilled estimators will inspect your property and provide a clear and detailed estimate for the required services.

Submittals & Site Meeting

While the scope of work might change with each job, our commercial project managers will work with you to best understand the necessary materials, scope of work, and logistics for your commercial project.

Schedule Job

Our representative will communicate with you and you will be added to our work schedule at the earliest availability.

Perform Work

A G.Cannon representative will be available to meet with you at the beginning of the project. A qualified G.Cannon crew will perform the designated work on the scheduled date.

G cannon truck

“We help you choose what’s best for your home or business. We guarantee top-notch service and cleanup.”

Jerry Cannon // Owner + CEO

Our Core Values

We Guarantee Quality

No Hassle
Commitment to quality
Trusted Relationships
Delivering value

Where We Deliver Top-Notch Work

Proudly serving the Pennsylvania and surrounding areas, we’d love for you to consider us as your go-to crew for top-notch roofing and siding services.

Here When You Need Us

High-End Commercial Roof Replacements

At G. Cannon, our #1 goal is to ensure seamless communication so you’re never left waiting on us. We’re fully licensed and insured, and we offer industry-leading warranties to back our work.

As a Master Select Certified contractor for low slope and TPO coatings and a Master Elite Certified contractor for steep slope and shingles, we bring the highest level of expertise and credibility to every project. With our commitment to clear communication and robust manufacturer guarantees, you can trust that your commercial roof will not only meet but exceed expectations, standing the test of time.

See Our Warranties
roofing contractors work on replacing commercial roofing system

Types of roofing

Cedar Roof

Slate Roof

Metal Roof

Flat Roof

Asphalt Shingles

Father and son outside house, enjoying a stress-free cup of coffee.

Hassle-Free Services Every Time

Reach Out to G. Cannon Today!

Get a Free Estimate