Molecular Systems, Inc. is a construction firm which provides a modern approach in producing efficient strategies to servicing our clients' needs. From business owners, to government agencies, we provide the following services; Roofing, Waterproofing and a regional supplier of Construction Supplies.
Molecular Systems, Inc. is a construction firm which provides a modern approach in producing efficient strategies to servicing our clients' needs. From business owners, to government agencies, we provide the following services; Roofing, Waterproofing and a regional supplier of Construction Supplies.
Looking for top-notch roofing, windows, and siding services in Maryland? Look no further than CHESAPEAKE ROOFING WINDOWS & SIDING. With our MHIC LICENSE #126792, we deliver exceptional craftsmanship and customer satisfaction. Contact us today for all your home improvement needs!
"David and his window installation team are incredibly hard working and professional. They have a strong commitment to excellence and work diligently to ensure everything is done well. David answers questions and explains options thoroughly. We would definitely do business with Chesapeake Roofing in the future based on our experience."
Nancy M on April 2023
Looking for top-notch roofing, windows, and siding services in Maryland? Look no further than CHESAPEAKE ROOFING WINDOWS & SIDING. With our MHIC LICENSE #126792, we deliver exceptional craftsmanship and customer satisfaction. Contact us today for all your home improvement needs!
"David and his window installation team are incredibly hard working and professional. They have a strong commitment to excellence and work diligently to ensure everything is done well. David answers questions and explains options thoroughly. We would definitely do business with Chesapeake Roofing in the future based on our experience."
Nancy M on April 2023
Since 1992, Roofing Pups, Roofing & Siding - MD has provided homeowners and business owners with top quality, factory-direct products, professionally installed by licensed, bonded installers with over 25 years of home improvement experience. Our experience sales representative will assist you with the windows and/or doors that suit you best. Roofing Pups Roofing & Siding takes pride in building relationships with not only our consumers but with our manufacturers as well. We have maintained a reputable business relationship with both of our leading manufactures, American Jewel and Home Guard, for 15 years. Being a locally owned and operated company, Roofing Pups is able to provide you with top quality products with a bottom line price! Come see for yourself how Air Tite Windows & Doors, Inc. can make your home look stunning and more energy efficient.
"Great.good job"
linwood c on May 2025
Since 1992, Roofing Pups, Roofing & Siding - MD has provided homeowners and business owners with top quality, factory-direct products, professionally installed by licensed, bonded installers with over 25 years of home improvement experience. Our experience sales representative will assist you with the windows and/or doors that suit you best. Roofing Pups Roofing & Siding takes pride in building relationships with not only our consumers but with our manufacturers as well. We have maintained a reputable business relationship with both of our leading manufactures, American Jewel and Home Guard, for 15 years. Being a locally owned and operated company, Roofing Pups is able to provide you with top quality products with a bottom line price! Come see for yourself how Air Tite Windows & Doors, Inc. can make your home look stunning and more energy efficient.
"Great.good job"
linwood c on May 2025
Keith Roofing has been serving residential, commercial, and industrial customers since 1960. We've built our reputation on providing a high-quality finished product that will last for years! Count on our team for honesty and integrity when it comes to serving the needs of home and business owners in the DC area. Because each roof provides different challenges, such as the pitch of the roof, type of shingles, the gutter system, and number of valleys, Keith Roofing offers thorough on-site inspections and true estimates of your roofing repair needs. WE are based in and only service Washington,DC- SO we specialize on working on these Beautiful Historic Homes we have here in the District.
"They couldn't have been more responsive or helpful. Customer satisfaction was clearly their top priority. It was literally some of the best customer service I have ever experienced! I could not recommend them more!"
Brent L on October 2020
Keith Roofing has been serving residential, commercial, and industrial customers since 1960. We've built our reputation on providing a high-quality finished product that will last for years! Count on our team for honesty and integrity when it comes to serving the needs of home and business owners in the DC area. Because each roof provides different challenges, such as the pitch of the roof, type of shingles, the gutter system, and number of valleys, Keith Roofing offers thorough on-site inspections and true estimates of your roofing repair needs. WE are based in and only service Washington,DC- SO we specialize on working on these Beautiful Historic Homes we have here in the District.
"They couldn't have been more responsive or helpful. Customer satisfaction was clearly their top priority. It was literally some of the best customer service I have ever experienced! I could not recommend them more!"
Brent L on October 2020
Cox Roofing is a division of BLC Construction Enterprises, Inc. A full-service, certified roofing contractor with over 30 years experience serving the residential and commercial roofing needs to the residents and businesses of the state of Maryland. We pride ourselves on our personalized service which transforms your property into the residence or business of your dreams. Our attention to detail and outstanding customer service is what separates us from our competition. We fully stand behind our work and pride ourselves on your overall satisfaction.
"Professional. Got the job done right and in one day."
Calvin S on June 2024
Cox Roofing is a division of BLC Construction Enterprises, Inc. A full-service, certified roofing contractor with over 30 years experience serving the residential and commercial roofing needs to the residents and businesses of the state of Maryland. We pride ourselves on our personalized service which transforms your property into the residence or business of your dreams. Our attention to detail and outstanding customer service is what separates us from our competition. We fully stand behind our work and pride ourselves on your overall satisfaction.
"Professional. Got the job done right and in one day."
Calvin S on June 2024
Elevate your home with Home Genius Exteriors, setting the standard in Maryland and Washington DC by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!
"The company was timely professional and courteous. They were responsive to any small issues that arose during the project which was appreciated."
Jeff B on July 2025
Elevate your home with Home Genius Exteriors, setting the standard in Maryland and Washington DC by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!
"The company was timely professional and courteous. They were responsive to any small issues that arose during the project which was appreciated."
Jeff B on July 2025
Exterior Medics is a premier home remodeling company, specializing in exterior replacement and repairs for both commercial and residential properties. When it comes to service and execution, we are unmatched. We've earned the Angie's List Super Service Award for 8 consecutive years, and are among just 2% of contractors nationwide to earn the GAF Master Elite status. Our team handles every project with utmost care and a laser-focused attention to detail. We consider every home we touch to be a reflection of our high standards, and treat every homeowner like a beloved member of our own family. Bonded and well insured. Licensed in both Maryland and Virginia.
"Spent ~$50,000 on a new roof with them. Thought everything went well. Years later discovered that they had not sealed the cricket on the chimney well enough. Discovered water coming in and eventually rotting the wallboard, studs, etc. Had to replace entire wall. Called them about the issue, they sent a rep. He said it was the chimney's fault, it was leaking. Not so, opened the wall and ceiling and had another roofer come spray water on the chimney, nothing, no leak. Then sprayed water on the cricket, water came in. Exterior Medics would not admit any fault. Had it repaired, no leak, no problem since then. Had recommended to a friend, never gain, he also had a bad experience. DO NOT USE IF YOU WANT QUALITY WORK AND A COMPANY HAT STANDS BEHIND THEIR WORK."
Peter K on January 2025
Exterior Medics is a premier home remodeling company, specializing in exterior replacement and repairs for both commercial and residential properties. When it comes to service and execution, we are unmatched. We've earned the Angie's List Super Service Award for 8 consecutive years, and are among just 2% of contractors nationwide to earn the GAF Master Elite status. Our team handles every project with utmost care and a laser-focused attention to detail. We consider every home we touch to be a reflection of our high standards, and treat every homeowner like a beloved member of our own family. Bonded and well insured. Licensed in both Maryland and Virginia.
"Spent ~$50,000 on a new roof with them. Thought everything went well. Years later discovered that they had not sealed the cricket on the chimney well enough. Discovered water coming in and eventually rotting the wallboard, studs, etc. Had to replace entire wall. Called them about the issue, they sent a rep. He said it was the chimney's fault, it was leaking. Not so, opened the wall and ceiling and had another roofer come spray water on the chimney, nothing, no leak. Then sprayed water on the cricket, water came in. Exterior Medics would not admit any fault. Had it repaired, no leak, no problem since then. Had recommended to a friend, never gain, he also had a bad experience. DO NOT USE IF YOU WANT QUALITY WORK AND A COMPANY HAT STANDS BEHIND THEIR WORK."
Peter K on January 2025
GoodGood Roofing & Siding is your trusted roofing expert in Washington D.C. With our top-notch craftsmanship and attention to detail, we deliver exceptional results that stand the test of time. Whether you need a new roof installation or repairs, our team is here to exceed your expectations. Contact us today for a reliable and professional roofing service you can count on.
"We started working with Jorden to re-slope some gutters to divert storm water. As our low slope shingle roof needed to be replaced, we asked him to provide a proposal to replace the existing roof with a modified bitumen roof system with an additional 3" rigid foam insulation. Kevin helped to provide me with the standard roof flashing and edge details for this type of residential roof system, which they were not familiar with. Kevin and Jorden discussed it with the roof installers and the product manufacturer, and provided whatever was needed, responding promptly throughout the process. They let us know when the material prices were expected to go up so that we could order the materials. During the time that I was not available, they worked with us to revise the schedule, which was much appreciated! The work was planned and executed without any issues, and we are very happy with our new roof. Thank you Kevin and Jorden!"
Suzanne H on September 2022
GoodGood Roofing & Siding is your trusted roofing expert in Washington D.C. With our top-notch craftsmanship and attention to detail, we deliver exceptional results that stand the test of time. Whether you need a new roof installation or repairs, our team is here to exceed your expectations. Contact us today for a reliable and professional roofing service you can count on.
"We started working with Jorden to re-slope some gutters to divert storm water. As our low slope shingle roof needed to be replaced, we asked him to provide a proposal to replace the existing roof with a modified bitumen roof system with an additional 3" rigid foam insulation. Kevin helped to provide me with the standard roof flashing and edge details for this type of residential roof system, which they were not familiar with. Kevin and Jorden discussed it with the roof installers and the product manufacturer, and provided whatever was needed, responding promptly throughout the process. They let us know when the material prices were expected to go up so that we could order the materials. During the time that I was not available, they worked with us to revise the schedule, which was much appreciated! The work was planned and executed without any issues, and we are very happy with our new roof. Thank you Kevin and Jorden!"
Suzanne H on September 2022
Paramount Builders takes pride in being your local home improvement contractor. Since 1991, we have served our local community by providing the very best products, warranties, installation techniques, service, and most importantly; your experience from start to finish. Our exclusive product lines give us the benefit of being able to extend our top-of-the-line products to you, our neighbors, with certainty and affordability. We hand-picked our exclusive products with you, your family, and your home's aesthetic and longevity in mind. All of our products were created to keep your home energy efficient and protected in every way. Our commitment to excellence does not waiver. We understand what it means to own a home, and we understand as professionals what you and your home deserve. We live each day by our mission statement; "Improving the Community, One Home at a Time," and thank you for continuing to trust us!
"Awesome Amazing job"
Karen H on May 2025
Paramount Builders takes pride in being your local home improvement contractor. Since 1991, we have served our local community by providing the very best products, warranties, installation techniques, service, and most importantly; your experience from start to finish. Our exclusive product lines give us the benefit of being able to extend our top-of-the-line products to you, our neighbors, with certainty and affordability. We hand-picked our exclusive products with you, your family, and your home's aesthetic and longevity in mind. All of our products were created to keep your home energy efficient and protected in every way. Our commitment to excellence does not waiver. We understand what it means to own a home, and we understand as professionals what you and your home deserve. We live each day by our mission statement; "Improving the Community, One Home at a Time," and thank you for continuing to trust us!
"Awesome Amazing job"
Karen H on May 2025
We specialize in roofing and siding inspection, repair and replacement as well as gutter repair and replacement. We have the experience and dedication to bring your dreams to reality! We pride ourselves on the quality work we provide, while delivering great customer service. Call or click to schedule a free inspection and estimate today!
"It went well."
Christopher E on August 2021
We specialize in roofing and siding inspection, repair and replacement as well as gutter repair and replacement. We have the experience and dedication to bring your dreams to reality! We pride ourselves on the quality work we provide, while delivering great customer service. Call or click to schedule a free inspection and estimate today!
"It went well."
Christopher E on August 2021