Business Details
42 Years
experience
Your Trusted Home Improvement Partner in Maryland
On Top Home Improvements has been a trusted Maryland home improvement contractor since 1984, founded by Dan Cox after years of observing the industry's shortcomings. We specialize in roofing, siding, windows, gutters, skylights, and ventilation, prioritizing honesty, quality, and customer satisfaction. Our team brings decades of combined experience, offering a 100% Lifetime Roofing Labor Warranty and free detailed estimates. We serve Montgomery, Prince Georges, Frederick, and Howard Counties, focusing on energy-efficient solutions and meticulous craftsmanship. Our family-owned business values transparency, requiring no deposit unless jobs exceed $6,000, with balances due only after client approval.We hold certifications like CertainTeed Certified Shingle Master and maintain comprehensive insurance and state licenses. Our commitment to community involvement and customer-centric service has earned us over 6,000 satisfied clients. We handle projects from initial consultation to cleanup, ensuring minimal disruption to your property. Our team includes Dan, Kim, and Nick Cox, who bring expertise in roofing, project management, and customer service. We pride ourselves on exceeding expectations through personalized attention and durable installations.
Services
Roofing
Siding
Windows
Gutters
Skylights
Ventilation
Details
- Year established: 1984
Highlights and features
- Over 30 years of experience in Maryland home improvement projects.
- Free, detailed estimates with no deposit required unless jobs exceed $6,000.
- 100% Lifetime Roofing Labor Warranty on all roof replacements.
- Fully insured and licensed with comprehensive liability and workers' compensation coverage.
- Family-owned business committed to community involvement and customer satisfaction.
Associations and certifications
- CertainTeed Shinglemaster
What people say
Great job and great service
Professional and on time
Excellent work done quickly
Energy-efficient solutions
Lifelong customer satisfaction
Services
Roofing
Our roofing services include repairs, replacements, and installations using durable CertainTeed shingles. We address leaks, ice dams, and damaged shingles with a focus on long-term protection against Maryland's weather. Our team offers a 100% Lifetime Labor Warranty, ensuring quality craftsmanship and customer satisfaction for homeowners in Montgomery and surrounding counties.
Siding
We install high-quality vinyl siding that enhances curb appeal and energy efficiency. Our solutions include CertainTeed products designed to withstand extreme weather, resist fading, and require minimal maintenance. With a 5-year labor warranty, we ensure precise installation and customer satisfaction for homes in Frederick, Silver Spring, and Columbia.
Windows
Our vinyl replacement windows improve energy efficiency and reduce noise with Simonton's low-E argon glass. We offer double-hung, casement, and bay windows tailored to Maryland homes, backed by a 5-year labor warranty. Our installations ensure airtight seals and easy maintenance for enhanced comfort and value.
Gutters
We install seamless aluminum gutters and Valor gutter guards to prevent leaks and clogs. Our systems protect foundations, landscaping, and siding from water damage, featuring reinforced hangers and a 5-year labor warranty. Services include gutter replacement and downspout installation in Howard and Prince Georges Counties.
Skylights
We install energy-efficient skylights from Wasco and Velux to brighten interiors and reduce energy costs. Our solutions include remote-controlled and insulated models with leak-proof flashing, backed by a 5-year labor warranty. Ideal for enhancing natural light in Montgomery County homes while maintaining aesthetic appeal.
People
Dan Cox
Owner
Dan founded On Top Home Improvements in 1984 after working as a roofer since age 18. He prioritizes honesty and customer care, earning certifications like CertainTeed Certified Shingle Master. Dan leads with over 30 years of industry experience and community involvement.
Kim Cox
Office Manager
Kim joined the business in 1991, managing administrative operations and customer relations. Known as the 'Chief Hot Shit,' she ensures smooth business processes and holds the team accountable. Kim balances work with homeschooling their three children.
Nick Cox
Project Manager
Nick, Dan's son, oversees project management and customer service. A licensed Maryland contractor, he brings expertise in roofing and home improvements. Nick continues the family legacy with a focus on quality and client satisfaction.
Questions
What areas do you serve?
We serve Montgomery, Prince Georges, Frederick, and Howard Counties in Maryland, including Frederick, Silver Spring, Columbia, and surrounding communities.
Do you offer warranties on your services?
Yes! We provide a 100% Lifetime Labor Warranty on roof replacements and 5-year labor warranties on siding, windows, gutters, and skylights.
How can I schedule a free estimate?
Call us at (301) 368-3551 or email us to schedule a free, no-obligation estimate for your home improvement project.
What payment methods do you accept?
We accept major credit cards, checks, and offer financing options for qualified customers.
Are your contractors licensed and insured?
Yes, we hold all necessary Maryland licenses and carry comprehensive liability and workers' compensation insurance.
Videos
Reviews (4)
L. T.
Jul 10, 2021
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Dan did our roof 11 years ago, and after a storm destroyed parts of our siding, we called him to have it repaired. It was pretty much beyond repairable and Dan took samples to the insurance agent, talked to the adjuster numerous times, and showed other issues with our siding after the storm during the adjusters on site visit and we were able to get our house completely rewrapped with his expertise. I highly recommend them.
Joe M.
Mar 22, 2020
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I had my roof replaced by On Top 25 years ago (Yes - in September 1995!) and have never had a problem with it. When it was time for a new roof (and after 25 years it certainly was) I had no hesitation in going back to On Top. Don has since been joined by his son Nick and it was a pure pleasure dealing with them (AND Jose - who had worked on my roof 25 years ago.) Bottom Line: their price was more than competitive with the other bids I got, they started promptly and finished up in one day, and did a THOROUGH clean-up afterwards. (After carefully searching around the house the next day I found exactly ONE nail in the driveway.) If a relative, friend, or neighbor asks me for a roofing recommendation I would tell them to call On Top FIRST!
Greg K.
May 01, 2018
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Had a new roof installed by On Top recently. Super good service from Dan and Nick. Great communication. They did exactly what they said the would at the price quoted. Nice to have a good roofer.
Lynn R.
May 04, 2016
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Superior service, quality craftsmanship, and added value to our home! On Top replaced our roof and installed an attic fan. These improvements have increased the value of our property and the roof looks beautiful! The attic fan has made the entire second floor of the house much cooler on hot summer days and nights, lowering our electric bills and saving us money. I have highly recommended On Top to my neighbors and friends.
