Your Trusted Asphalt Maintenance Experts

Detailed view of road maintenance with asphalt and worker tools in daytime.
DM Sealcoating LLC

Quality Asphalt Services for Every Need

An empty curvy road with yellow lines through a lush green park on a cloudy day.

DM Asphalt Sealcoat offers unparalleled asphalt maintenance services in Swanzey, NH, ensuring lasting protection for your asphalt surfaces.

Our experienced team has successfully served countless homeowners and businesses, providing exceptional results in sealcoating, crack filling, and pothole repair. With a commitment to quality and customer satisfaction, we help you maintain and extend the life of your asphalt, ensuring it looks great and performs well for years to come.

Learn More About Our Services

We take pride in delivering reliable asphalt solutions that enhance the appearance and durability of driveways and parking lots across Swanzey and beyond.

Our Journey in Asphalt Maintenance


Founded in Swanzey, New Hampshire, DM Asphalt Sealcoat is owned and operated by Dennis Mapes of DM Sealcoating LLC. With over 10 years of experience, Dennis has built a reputation for delivering reliable, high-quality asphalt maintenance services with a commitment to exceptional workmanship and customer satisfaction

DM Sealcoating LLC

A Legacy of Quality Asphalt Services

Since its establishment, the company has evolved to meet the growing needs of its clients. Ongoing investment in training, equipment, and modern techniques ensures the delivery of high-quality sealcoating, crack filling, pothole repair, and line striping services, helping protect asphalt surfaces and extend their lifespan.

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