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Find Roof sealant application pros in Gaithersburg

Avatar for Home Genius Exteriors

Home Genius Exteriors

8201 Corporate Drive, Suite G10
4.94(
352
)
Approved Pro

Home Genius Exteriors

8201 Corporate Drive, Suite G10
4.94(
352
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
21 years of experience

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!

"Everyone was amazing, workers and crew were efficient, cleanliness was great and we recommend them for all projects. Thank you Ty, AJ and Bryan for an great experience!"

charles n on December 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!

"Everyone was amazing, workers and crew were efficient, cleanliness was great and we recommend them for all projects. Thank you Ty, AJ and Bryan for an great experience!"

charles n on December 2024


Avatar for Home Genius Exteriors

Home Genius Exteriors

8201 Corporate Drive Suite G10
4.97(
706
)
Approved Pro

Home Genius Exteriors

8201 Corporate Drive Suite G10
4.97(
706
)
Approved Pro
Super Service Award
Customers say: True professional
2615 local quotes requested
21 years of experience

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!

"They did an amazing job with the roof and solar reinstall. Leo and Dylan were excellent and we'd highly recommend them"

Rosalyn C on October 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!

"They did an amazing job with the roof and solar reinstall. Leo and Dylan were excellent and we'd highly recommend them"

Rosalyn C on October 2025


Avatar for H Forrest Contracting

H Forrest Contracting

9314 Baltimore National Pike, Suite 137
4.80(
306
)
Approved Pro

H Forrest Contracting

9314 Baltimore National Pike, Suite 137
4.80(
306
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
84 local quotes requested

At H. Forrest we specialize in all roof repairs vinyl siding repairs and masonry work if they are minor or a whole new project we offer fast effective service and we treat your home like are own. We are a family owned and operated business with over 40 yrs experience we offer 24hr service year round and we give warrantys that we back 100% on every job we are general contractors Lic,bonded,and ins. So we can fix any problem you have on your home

"Henry, Henry Jr., Sadiel and his crew were courteous, professional and just plain good. I’ll use them again! Excellent tuck-pointing and chimney rebuilding."

Frank R on September 2025

At H. Forrest we specialize in all roof repairs vinyl siding repairs and masonry work if they are minor or a whole new project we offer fast effective service and we treat your home like are own. We are a family owned and operated business with over 40 yrs experience we offer 24hr service year round and we give warrantys that we back 100% on every job we are general contractors Lic,bonded,and ins. So we can fix any problem you have on your home

"Henry, Henry Jr., Sadiel and his crew were courteous, professional and just plain good. I’ll use them again! Excellent tuck-pointing and chimney rebuilding."

Frank R on September 2025


Avatar for Moses Williamson

Moses Williamson

8630 M Guilford Road
4.92(
42
)
Approved Pro

Moses Williamson

8630 M Guilford Road
4.92(
42
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
40 local quotes requested

Moses & son is a 2nd generation family owned, and operated home improvement business recognized by homeowners for quality roofing and gutter work on a 4-season basis. We provide a freedom consultation to customers requesting new and repair work on a variety of building materials including flat roofs , metal, copper, pvc gutters, asphalt shingle, and tile roofs. Slate roofs . complete customer satisfaction. Give Moses Williamson a call today for your free estimate! BBB Rated A+ since 2005!

"The Job was done quickly, efficiently and on time. The price was reasonable. I certainly would recommend Moses Williamson for similar jobs. Jack"

J. v on December 2024

Moses & son is a 2nd generation family owned, and operated home improvement business recognized by homeowners for quality roofing and gutter work on a 4-season basis. We provide a freedom consultation to customers requesting new and repair work on a variety of building materials including flat roofs , metal, copper, pvc gutters, asphalt shingle, and tile roofs. Slate roofs . complete customer satisfaction. Give Moses Williamson a call today for your free estimate! BBB Rated A+ since 2005!

"The Job was done quickly, efficiently and on time. The price was reasonable. I certainly would recommend Moses Williamson for similar jobs. Jack"

J. v on December 2024


Avatar for E R Roofing Co

E R Roofing Co

6325 Quinn Rd
4.69(
341
)
Approved Pro

E R Roofing Co

6325 Quinn Rd
4.69(
341
)
Approved Pro
Customers say: Super punctual
139 local quotes requested
18 years of experience

CALL E.R. ROOFING COMPANY FOR ALL YOUR ROOFING, SIDING AND GUTTER NEEDS. ASK ABOUT OUR UPCOMING FALL SPECIALS! We strive to provide excellent customer service and quality craftsmanship at affordable prices We specialize in: • Roof replacements • Roof repairs • Vinyl, Wood and Hardie plank siding replacements and repairs • Gutters • Window and Door replacements • Exterior trim repairs and replacements

"E.R. Roofing installed hardiboard siding on my house and new windows throughout the house. They were careful and professional in every way. The quality of the work is second to none. The pricing was very fair. And the after-the-job customer service has been nothing but over-the-top. Elliott is responsive and cares about his customers, which is why he will be the one to install the next roof on my house when it is time to do so. I can't say enough good things about E.R. Roofing."

Neal B B on May 2022

CALL E.R. ROOFING COMPANY FOR ALL YOUR ROOFING, SIDING AND GUTTER NEEDS. ASK ABOUT OUR UPCOMING FALL SPECIALS! We strive to provide excellent customer service and quality craftsmanship at affordable prices We specialize in: • Roof replacements • Roof repairs • Vinyl, Wood and Hardie plank siding replacements and repairs • Gutters • Window and Door replacements • Exterior trim repairs and replacements

"E.R. Roofing installed hardiboard siding on my house and new windows throughout the house. They were careful and professional in every way. The quality of the work is second to none. The pricing was very fair. And the after-the-job customer service has been nothing but over-the-top. Elliott is responsive and cares about his customers, which is why he will be the one to install the next roof on my house when it is time to do so. I can't say enough good things about E.R. Roofing."

Neal B B on May 2022


Daniel Parks

672 Old Mill Rd., Ste. 240
4.65(
143
)
Approved Pro

Daniel Parks

672 Old Mill Rd., Ste. 240
4.65(
143
)
Approved Pro
Customers say: Quick response
59 years of experience
Free onsite estimate

Family owned and operated, 40 years experiece in roofing and gutters. We only use premium quality materials, highly qualified and BBB member.

"Reasonably priced and responsive. His team provided next day service to complete roof repairs."

David G on May 2025

Family owned and operated, 40 years experiece in roofing and gutters. We only use premium quality materials, highly qualified and BBB member.

"Reasonably priced and responsive. His team provided next day service to complete roof repairs."

David G on May 2025


Keith Roofing

611 Pennsylvania Ave SE Suite 248
4.87(
313
)
Approved Pro

Keith Roofing

611 Pennsylvania Ave SE Suite 248
4.87(
313
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
47 local quotes requested

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


Avatar for W E Griffin Roofing

W E Griffin Roofing

7910 Woodmont Ave
4.97(
64
)
Approved Pro

W E Griffin Roofing

7910 Woodmont Ave
4.97(
64
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
22 local quotes requested

W. E. Griffin Roofing is Maryland’s premiere roofing company. Incorporated in 1931, we have been servicing the D.C. and Maryland areas as a family owned and operated company by putting our customers first. Our quality roofing services focus on our most important friends; home owners and home builders. We look forward to building a lasting friendship with you in order to service all of your roofing needs.

"new flat copper roof and flashing"

Sabrina Z on January 2021

W. E. Griffin Roofing is Maryland’s premiere roofing company. Incorporated in 1931, we have been servicing the D.C. and Maryland areas as a family owned and operated company by putting our customers first. Our quality roofing services focus on our most important friends; home owners and home builders. We look forward to building a lasting friendship with you in order to service all of your roofing needs.

"new flat copper roof and flashing"

Sabrina Z on January 2021


"I would not hesitate to recommend - responsive, great communication, reasonable pricing. We had a disastrous roof flooding experience from a flat roofed dormer and needed it fixed quickly. As Roberto worked on the dormers he found significant water damage below the shingles, documenting it with photos for us. Although it cost more than the original estimate to replace the flat plywood sheaths and wood fascia, it was still reasonable and the work done was thorough and looks great. "

Jane S on June 2025

xx

"I would not hesitate to recommend - responsive, great communication, reasonable pricing. We had a disastrous roof flooding experience from a flat roofed dormer and needed it fixed quickly. As Roberto worked on the dormers he found significant water damage below the shingles, documenting it with photos for us. Although it cost more than the original estimate to replace the flat plywood sheaths and wood fascia, it was still reasonable and the work done was thorough and looks great. "

Jane S on June 2025


Avatar for John Krause Construction

John Krause Construction

11519 HG Truman Rd
4.67(
127
)
Approved Pro

John Krause Construction

11519 HG Truman Rd
4.67(
127
)
Approved Pro
Customers say: Quality work
181 local quotes requested
27 years of experience

John Krause Construction, Inc. is an unparalleled team of professionals dedicated to the mission of custom home design and building. Together the John Krause team creates a superlative custom home building and home improvement experience tailored to the needs, wants and dreams of each client. We are passionate about our client relationships and this is reflected in all that we do. From the in-house design process, interior and exterior customization and artisanal craftsmanship to the professional management and accurate fixed pricing, our aim is your total satisfaction with your new home, architectural restoration or home remodeling project. 

"I am writing to formally express my deep dissatisfaction with the recent retaining wall replacement project completed by John Krause Construction (JKC) at my property. After reading positive reviews and receiving an estimate that, although over my budget, seemed reasonable for the work involved, I made the decision to hire JKC. Unfortunately, this has proven to be a significant mistake, and I am left extremely disappointed with both the quality of work and the overall experience. Here are the main issues I encountered: 1. Unprofessional Behavior: The crew exhibited unacceptable behavior while working on my property. Not only did I witness them disposing of bodily fluids on-site, but they were also disrespectful and dismissive. when I raised concerns no response was received. I now smell urine when entering and exiting my garage. 2. Unresponsive Ownership: I have attempted to reach out to the owner multiple times to address these concerns and resolve the issues, but my messages have been met with silence. This lack of communication is incredibly frustrating and has only added to my disappointment. The owner refused to speak on the phone since the owner was made aware of the call being recorded. 3. Property Damage: During the construction process, my property was left damaged in multiple areas. This included e.g., landscaping destruction, equipment damage. Personal crew members vehicles being driven through my yard leaving deep tire marks damage. 4. Subpar Quality of Work: Despite the high cost of the project, the final result does not meet the standards outlined in the estimate or contract. No proper grading was completed. Every time it rains pools of water sits in front and behind the wall. The response received was. “we have passed all inspections.  There will be some water pooling while it is settling still. Plus the fact of the hard rain today, it will happen.” The wall has been completed for 2 months. Given the extensive problems, stress and anxiety I have faced. I do not recommend John Krause Construction."

B F on April 2025

John Krause Construction, Inc. is an unparalleled team of professionals dedicated to the mission of custom home design and building. Together the John Krause team creates a superlative custom home building and home improvement experience tailored to the needs, wants and dreams of each client. We are passionate about our client relationships and this is reflected in all that we do. From the in-house design process, interior and exterior customization and artisanal craftsmanship to the professional management and accurate fixed pricing, our aim is your total satisfaction with your new home, architectural restoration or home remodeling project. 

"I am writing to formally express my deep dissatisfaction with the recent retaining wall replacement project completed by John Krause Construction (JKC) at my property. After reading positive reviews and receiving an estimate that, although over my budget, seemed reasonable for the work involved, I made the decision to hire JKC. Unfortunately, this has proven to be a significant mistake, and I am left extremely disappointed with both the quality of work and the overall experience. Here are the main issues I encountered: 1. Unprofessional Behavior: The crew exhibited unacceptable behavior while working on my property. Not only did I witness them disposing of bodily fluids on-site, but they were also disrespectful and dismissive. when I raised concerns no response was received. I now smell urine when entering and exiting my garage. 2. Unresponsive Ownership: I have attempted to reach out to the owner multiple times to address these concerns and resolve the issues, but my messages have been met with silence. This lack of communication is incredibly frustrating and has only added to my disappointment. The owner refused to speak on the phone since the owner was made aware of the call being recorded. 3. Property Damage: During the construction process, my property was left damaged in multiple areas. This included e.g., landscaping destruction, equipment damage. Personal crew members vehicles being driven through my yard leaving deep tire marks damage. 4. Subpar Quality of Work: Despite the high cost of the project, the final result does not meet the standards outlined in the estimate or contract. No proper grading was completed. Every time it rains pools of water sits in front and behind the wall. The response received was. “we have passed all inspections.  There will be some water pooling while it is settling still. Plus the fact of the hard rain today, it will happen.” The wall has been completed for 2 months. Given the extensive problems, stress and anxiety I have faced. I do not recommend John Krause Construction."

B F on April 2025

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FAQs for roof sealant application projects in Gaithersburg, MD

A roof coating system lasts between 10 and 20 years. With a premium coating and regular maintenance—like inspections and touch-ups—your roof will stay protected against weather damage and water intrusion. This enhances its durability and preserves its structural integrity throughout its lifespan. Make sure to keep in contact with a roof coating pro so that you don’t miss regulating resealing. 

You should recoat or reseal your roof every four to six years. Maintaining a consistent recoating schedule preserves the integrity of the protective seal and prevents moisture penetration and material degradation. High-quality, built-up roof systems require this interval, and if an EPDM roof begins to leak, replacing the coating becomes necessary to restore full protection.

A roof coating can seal small cracks and stop minor water infiltration, helping to prevent roof leaks. While the coating enhances the roof’s durability and prevents early signs of leakage, it does not replace the need for full-scale repairs when substantial structural damage exists. Professional evaluation and repair are required to resolve significant water intrusion and ensure your roof retains long-lasting protection.

The Gaithersburg, MD homeowners’ guide to roof sealant applications

From average costs to expert advice, get all the answers you need to get your job done.

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