Dunsmore Exteriors is a family owned and operated company. With our office located in Marriottsville, MD, we are available to work all over the state. We pride ourselves on our quality work and rely on our trusted crews to help us deliver exceptional results for each of our customers. ​

Scott Dunsmore, owner and founder has been working on the roof since his late teens. Now in his mid-thirties, Scott offers over 15 years of experience and knowledge to his customers. He is married with three children and was raised in Howard County.

Dunsmore Exteriors

Scott prides himself on being honest with his customers; you may not always know exactly what your house needs, but Scott will happily walk you through the process — complete with pictures and samples available for your residential roofing, siding, or other exterior project.

Shortly after starting Dunsmore Exteriors, Scott asked David Janson to join the team. Scott and David have known each other since second grade and have worked side by side on roofs for years. David was born and raised in Howard County and now lives in Carroll County with his wife and three children. ​

David Janson handles the majority of service calls, repairs, and maintenance. He brings a unique set of skills which has proven to be invaluable to our company. While our trusted crews will typically handle the big jobs, David manages the jobs, helps customers with last minute questions, and maintains relationships between our vendors and crews. If you have a question about a job, David will be the one coming out to set your mind at ease. ​

At Dunsmore Exteriors, we strive to offer excellent customer service and maintain relationships with our customers even after our jobs are finished. Follow us on social media to see some of the jobs we’ve completed, and if we’ve done a job for you, leave us a comment or a review letting others know about your experience!


What Our Customers Are Saying

Live in Maryland and need new windows? Dunsmore Exteriors is the company you need to go with. We worked directly with Scott for all pricing and scheduling, then a crew came out and did the install. After it was all said and done you couldn't even tell that there had been workers in and around our house, except for our gorgeous new windows. A++++ rating for Dunsmore Exteriors!

Kelly M.
Gaithersburg, MD
Dunsmore Exteriors installed our sliding door, for our basement, and we love it. Easy to set up an appointment, nice work, and very friendly workers. Thank you Dunsmore Exteriors.

Nancy J.
Ellicott City, MD
Scott and the crew at DE are the best! Legit the best! Scott walked us through the entire roof and even dropped off shingle samples for us to look at on a Sunday afternoon. If you need a new roof you need to use Dunsmore Exteriors!

Karl B.
Westminster, MD
From start to finish Dunsmore Exteriors exceeded our expectations. Scott was on our roof the very first day and took detailed pictures showing exactly where our issues were. He helped us navigate the claim with our insurance company, and a few weeks later we ended up with a gorgeous new roof! Thank you so much Dunsmore Exteriors!!

Karen L.
New Windsor, MD
Scott and his crew at Dunsmore Exteriors did amazing work on our house! We had a brand new roof in a day and all the trash was cleaned up! Never knew I could have such a smooth time with such a huge project. Thanks Dunsmore Exteriors!

David T.
Westminster, MD
What can I say? Dunsmore Exteriors went above and beyond! Our roof looks great and was handled completely professionally and efficiently. We had no idea we could have a new roof this easily. My wife and I are ecstatic!

Frank L.
Columbia, MD
We needed new gutters but we kept putting it off because there was always some other project that needed to be done first. Until we started noticing damage from our gutters not draining properly. Along comes Scott to our rescue! He showed us the problems, explained how they would fix it, and before our next thunderstorm our gutters were right as rain! Thanks Dunsmore Exteriors!

William S.
Sykesville, MD
Scott and Dunsmore Exteriors did an excellent job on our roof. Scott showed us shingle colors and explained the warranties that went along with each option. In the end we felt confident that we made the best choice for our home and now we have a gorgeous roof.

Cynthia R.
Columbia, MD
prev next