Maryland: 301.854.2764 Virginia: 703.752.6121

Gaithersburg, MD Roofing Contractor

All of the most important exterior elements of your house require maintenance or repair from time to time. Do you know the status of your roof or gutters? No matter what you need, Certified Incorporated can help you get it done in Gaithersburg.

The biggest challenge of roofing work isn’t a lack of roofing contractors; it’s finding one that can do a great job for a reasonable price.  The key to finding a good roofing contractor is to look into their skills. We at Certified Inc. have 30 years of experience in the roofing business. We are proud to have been recognized by major roofing manufacturers for our work throughout Maryland. We are prepared to handle any project that comes our way!

If you need a new roof, trim, siding, windows, gutters, or more, give Certified Inc. a call! We offer free estimates. Call us at 301-854-2764 or contact us online now!


The roof is a crucial protective element of any home or building. When you choose Certified Inc. for your roof installation, you receive a detailed analysis of your current roof and expert roofing specialists who can answer any question you might have throughout the installation process. We offer the following types of roofs:

  • Asphalt
  • Flat
  • Cedar Shake
  • Synthetic Slate

Our team can also help replace an outdated roof. If you are dealing with a dilapidated, old roof, we will work with you to determine the best roof replacement options for your home or building. We’ve seen it all when it comes to weather damage in Maryland, so we’re ready for anything!


Gaithersburg can see a lot of rain throughout the year, making gutters an essential for any home or building. Gutters protect your roof, siding, and foundation by controlling the flow of rainfall. They typically last decades, but depending on the material and level of maintenance, will eventually need to be replaced. Certified Inc. installs the follow types of gutters:

  • 6” aluminum
  • 6″ copper
  • 5″ aluminum
  • 5″ copper
  • Half round

If your gutters clog or leak frequently, it’s time for them to be replaced! Let Certified Inc. help keep you protected with a new set of gutters.


You already know windows provide valuable natural light, but did you know they can help  make serious cuts on energy costs while? Vinyl windows are a great option because they are low-cost and low maintenance, while also boasting high durability and energy efficiency. They are naturally insulating, so you won’t lose your heat to draftiness. Certified Inc. installs Atrium and Simonton brand windows so no matter which you choose, you know you will be installing a quality product with quality service.


Trim might not have any practical or protective value, but it does add beauty and value to the exterior of your Gaithersburg home or building. Trim elements include windows, shutters, fascias, and more. If you feel the the exterior of your home or building is looking drab, trim is a great way to liven things up.

Trim helps to keep your building’s exterior looking fresh and well-kept. If it is damaged or rotting, it could spread to other areas and create further problems. If you need any or all of your trim replaced, Certified Inc. is the team to call to get your exterior spruced up.


Siding adds important structural integrity to your home or building. But it also adds curb appeal and improves energy efficiency. Siding typically has a long lifespan, but natural causes can wear it down. If your siding is damaged, loose, or discolored, a replacement may be in your future. We install the following types of siding:

  • Vinyl siding
  • HardiePlank siding
  • Cedar siding

If your siding is blistering, rotting, or loose, Certified Inc. can help protect your home AND make it beautiful with new siding!

Why Choose Certified Inc. for Gaithersburg, MD Services?

Our team truly is the authority in the industry, boasting multiple certifications by other major manufacturers. We provide our employees with in-house training, which enables us to hire and retain the best roofing mechanics in Gaithersburg and Maryland at large. This assures you, our valued customers, that you will receive the prompt service you want and deserve.

We are proud to say that we:

  • Have nearly 30 years of roofing experience
  • Are a licensed, bonded, and insured contractor
  • Offer a variety of roofing materials for your project

Our company is a member of the Bureau of Consumer Affairs, the National Association of Remodeling Industry, the National Roofing Contractors Association, and the Better Business Bureau. If you have questions about our residential services, don’t hesitate to reach out! We look forward to partnering with you to assess your needs and ultimately install the perfect roof for your home or building.

Want a free estimate? Call us today at 301-854-2764 or fill out a contact form to learn more!

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*Please note that we do not do repair work.
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