Roofers installing new roof on house, laying shingles on top of underlayment

There are a few very important things to consider when hiring a roofing contractor in Maryland: the contractor’s licensing, manufacturer certifications, experience, and warranty coverage. Nail those four requirements, and you are far less likely to end up with shoddy workmanship, surprise bills, or warranty headaches after the work is complete.

Maryland homeowners face a real mix of weather conditions throughout the year, from humid summers and heavy rain to ice and snow in winter. That combination puts real stress on a roof, which is why who you hire matters just as much as what materials get installed. Use this guide to make a confident, informed decision about choosing the best roofing contractor for your project.

Verify Licensing and Insurance

Start by checking whether a contractor holds a valid license in Maryland; without it, they cannot legally operate. Should an accident occur on the job, having liability insurance plus workers’ compensation becomes essential for your protection. These safeguards ensure you are not left responsible if damage or injury happens mid-project.

Before any agreement, request the license number because verification matters. Getting licensed means meeting standards set by the Maryland Home Improvement Commission. A trustworthy professional won’t hesitate to provide proof. Only those with a valid Home Improvement Contractor (HIC) permit can legally work in the state.

Look for Manufacturer Certifications

Manufacturer certifications are one of the clearest signals of a contractor’s quality and commitment. These programs require contractors to meet strict installation standards, maintain strong customer satisfaction records, and stay current with product training.

Some credentials carry more weight than others. Only a select few roofers across the country qualify for top-level recognition, like the Owens Corning Platinum Preferred distinction. Because of this standing, those professionals unlock extended warranty options unavailable through regular installers.

When evaluating a contractor’s certifications, look for:

Ask About Warranty Coverage

The coverage you get under warranty will vary wildly depending on which contractor you use to install your roof. The materials manufacturer and the level of certification the contractor has also influence what coverage you receive.

For instance, the Platinum Protection warranty that includes lifetime workmanship coverage is only offered by Owens Corning Platinum Preferred contractors. Regular contractors are typically limited to product warranties that only cover material. Knowing this distinction before you hire can save you from a costly gap in coverage later.

Ask each contractor to explain exactly what warranty they can offer on both materials and workmanship. If they cannot clearly answer that question, move on. You can learn more about Owens Corning warranty options to understand the differences between coverage tiers.

Check Reviews and Local Reputation

What contractors say during a presentation might sound good, but online comments often show something different. Google ratings can hint at reliability, but the full story usually comes from longer remarks left by past clients. Feedback on the Better Business Bureau site adds context, especially when complaints appear more than once. Platforms such as GuildQuality matter because they collect detailed experiences over time. Spotting repeated praise or frustration helps separate steady performance from occasional luck.

Pay attention to how the company handles negative reviews as much as the positive ones. A contractor that responds professionally to criticism and works to resolve issues is a much safer choice than one with a perfect score but very few reviews.

Get a Written Estimate and Ask the Right Questions

A solid contractor gives a clear paper breakdown, including what tasks they’ll do, which supplies go in, how long it takes, plus how they’ll handle the mess afterwards. Avoid any company that pressures you to sign on the spot or provides only a verbal quote.

Before hiring, ask each contractor:

Choose The Best Roofing Contractor in Maryland You Can Trust

American Custom Contractors has been serving Maryland homeowners since 1972. As an Owens Corning Platinum Preferred Contractor, GAF Certified Plus contractor, and CertainTeed ShingleMaster Preferred contractor, we are among the most credentialed residential roofing contractors in the region. We are fully licensed in Maryland, bonded, and insured, and we back every project with strong manufacturer warranty coverage.

If you are ready to get started or just have questions, contact us today for a free estimate. We serve homeowners throughout Maryland, including the greater Rockville area and surrounding communities.

5-star client testimonial for American Custom Contractors, best roofing contractor in Maryland, praising professional installation and teamwork

Frequently Asked Questions

How do I find the best roofing contractor in Maryland?

The best roofing contractor in Maryland will hold a valid Maryland Home Improvement Commission (MHIC) license, carry liability insurance and workers’ compensation, and hold top-tier manufacturer certifications like Owens Corning Platinum Preferred. Confirm these credentials before requesting a quote, then compare warranty coverage and reviews across a shortlist of licensed contractors.

What certifications should the best roofing contractor have?

The best roofing contractors hold manufacturer certifications such as Owens Corning Platinum Preferred or Preferred Contractor status, GAF Certified Plus, or CertainTeed ShingleMaster Preferred. These designations mean the contractor has met strict installation standards, maintains strong customer satisfaction records, and qualifies for extended warranty options unavailable to standard installers.

Is licensing required to hire a roofing contractor in Maryland?

Yes, Maryland requires roofing contractors to hold a valid Home Improvement Contractor (HIC) license issued by the Maryland Home Improvement Commission. Operating without this license is illegal, so always ask for a license number and verify it before signing any agreement.

What warranty coverage should I expect from a top roofing contractor?

Top roofing contractors offering the best warranty coverage typically provide both material and workmanship warranties, not just material-only coverage. For example, Owens Corning’s Platinum Protection warranty includes lifetime workmanship coverage, but it’s only available through Platinum Preferred contractors — a level of coverage most standard contractors cannot offer.

How can I check if a roofing contractor has a good reputation?

Check Google reviews, the Better Business Bureau, and third-party platforms like GuildQuality for detailed, verified customer feedback. Pay close attention to how a contractor responds to negative reviews, since professional resolution of complaints is often a stronger signal of reliability than a perfect but thin review count.

What questions should I ask before hiring a roofing contractor?

Before hiring, ask whether they’re licensed and insured in Maryland, what manufacturer certifications they hold, what warranty coverage applies to materials and workmanship, how they handle cleanup and disposal, and who will manage the project on-site. A contractor confident in their qualifications will answer all of these clearly.

Why choose American Custom Contractors as your roofing contractor?

American Custom Contractors has served Maryland homeowners since 1972 and holds Owens Corning Platinum Preferred, GAF Certified Plus, and CertainTeed ShingleMaster Preferred certifications — making it one of the most credentialed residential roofing contractors in the region. ACC is fully licensed, bonded, and insured, with a strong manufacturer’s warranty backing on every project.

Written By

Wynter Pradier

Office & Fleet Manager, 4 Years with American Custom Contractors

Wynter Pradier is a member of the Marketing team at American Custom Contractors, where she also serves as Office Manager and Fleet Manager. With more than 25 years of experience in graphic design, print design, and content creation, she brings both creative and technical expertise to every piece of content she produces, driven by a passion for telling ACC’s story. Her 20+ years of administrative experience also help keep operations running smoothly across departments.

Technical Review by

Demetri Giakoumatos

CEO since 1998

Demetri Giakoumatos is CEO of American Custom Contractors and has more than 25 years of experience in the exterior remodeling industry. His expertise includes sales leadership, homeowner education, customer experience, and the use of technology and innovative processes to improve the home improvement experience.
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