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Roof sealant application pros in Potomac

Avatar for William MacKay
William MacKay
1519 Fair Oak Drive
4.89(
208
)
Approved Pro
William MacKay
1519 Fair Oak Drive
4.89(
208
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
15 local quotes requested

Deal with a contractor, not a salesman! William Mackay Roofing has been providing roofing, gutter, and general contracting services in the D.C and surrounding areas for over three generations with a fourth on its way. As a family owned and operated company we specialize in all forms of roofing, tuck pointing, gutter work, and new siding projects. We operate and are licensed/insured for D.C, Virginia, and Maryland. William Mackay is proud to be A+ rated with the BBB and we take pride in our customer service and quality of work. Should you choose to work with us, your satisfaction will be our top priority! If you are in need of an estimate our family will be more than happy to help you out so please don't hesitate to contact us. We hope to hear from you soon!

"Did a great job and cleaned up all debris."

Joe V on August 2024

Deal with a contractor, not a salesman! William Mackay Roofing has been providing roofing, gutter, and general contracting services in the D.C and surrounding areas for over three generations with a fourth on its way. As a family owned and operated company we specialize in all forms of roofing, tuck pointing, gutter work, and new siding projects. We operate and are licensed/insured for D.C, Virginia, and Maryland. William Mackay is proud to be A+ rated with the BBB and we take pride in our customer service and quality of work. Should you choose to work with us, your satisfaction will be our top priority! If you are in need of an estimate our family will be more than happy to help you out so please don't hesitate to contact us. We hope to hear from you soon!

"Did a great job and cleaned up all debris."

Joe V on August 2024


Avatar for Daniel Parks
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


Avatar for James McMillan Contracting
James McMillan Contracting
10100 Twin Rivers Road Unit 415
4.73(
54
)
Approved Pro
James McMillan Contracting
10100 Twin Rivers Road Unit 415
4.73(
54
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
25 years of experience

James McMillan Contracting is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"James and his crew are amazing! They are honest, trustworthy, and fair. I got ripped off by another company that had extremely poor workmanship. I called Jim and explained the issue and he sent his crew to fix it the next day. I want to thank him from the bottom of my heart for his help with this issue. I feel so much better now that the hole in my roof has been repaired the right way."

Patrice G on July 2024

James McMillan Contracting is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"James and his crew are amazing! They are honest, trustworthy, and fair. I got ripped off by another company that had extremely poor workmanship. I called Jim and explained the issue and he sent his crew to fix it the next day. I want to thank him from the bottom of my heart for his help with this issue. I feel so much better now that the hole in my roof has been repaired the right way."

Patrice G on July 2024


Avatar for New Castle Constructs, LLC
New Castle Constructs, LLC
27 E Randall St
5.00(
27
)
Approved Pro
New Castle Constructs, LLC
27 E Randall St
5.00(
27
)
Approved Pro
Super Service Award
Customers say: True professional
109 local quotes requested
2 years of experience

New Castle Constructs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Yes, New Castle Construction did excellent work today 3/14/25. Joseph was my rep. and was very consistent until I committed. Nadir actually came and did the roof job, and satisfied my expectations fully. I hope the best for this business and it continues to thrive and flourish. Kudos you guys! Satisfied Customer Hana B. Sxxxx"

Hana B on March 2025

New Castle Constructs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Yes, New Castle Construction did excellent work today 3/14/25. Joseph was my rep. and was very consistent until I committed. Nadir actually came and did the roof job, and satisfied my expectations fully. I hope the best for this business and it continues to thrive and flourish. Kudos you guys! Satisfied Customer Hana B. Sxxxx"

Hana B on March 2025


Avatar for D. Fuentes Painting
D. Fuentes Painting
4601 North Fairfax Drive, Suite 1200
4.79(
98
)
Approved Pro
D. Fuentes Painting
4601 North Fairfax Drive, Suite 1200
4.79(
98
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
56 local quotes requested

D. Fuentes painting is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very professional and very high quality."

Teryal T on May 2025

D. Fuentes painting is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very professional and very high quality."

Teryal T on May 2025


Avatar for Champion Home Improvements, LLC
Champion Home Improvements, LLC
4920 Niagara Road
4.26(
201
)
Approved Pro
Champion Home Improvements, LLC
4920 Niagara Road
4.26(
201
)
Approved Pro
Customers say: Quick response
57 local quotes requested
31 years of experience

Our continuing goal is to provide professional services to our customers on an ongoing basis. Integrity, honesty, quality workmanship, and customer service are our priorities. We always go the extra mile to ensure customer satisfaction. Day or Evening Free Estimates Available* Virtual Estimates available. Take a photo - Measure - Call - We Install - Its that simple. *All homeowners must be present and other conditions apply

"Amazing and quick service and amazing customer service"

Katie D on June 2024

Our continuing goal is to provide professional services to our customers on an ongoing basis. Integrity, honesty, quality workmanship, and customer service are our priorities. We always go the extra mile to ensure customer satisfaction. Day or Evening Free Estimates Available* Virtual Estimates available. Take a photo - Measure - Call - We Install - Its that simple. *All homeowners must be present and other conditions apply

"Amazing and quick service and amazing customer service"

Katie D on June 2024


Avatar for Ashburn Roofing LLC
Ashburn Roofing LLC
252 Airport Road
5.00(
19
)
Approved Pro
Ashburn Roofing LLC
252 Airport Road
5.00(
19
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
833 local quotes requested

Welcome to Ashburn Roofing, your neighborhood roofing specialist. Based in Winchester, Virginia, we serve the entire Triangle Area. We specialize in asphalt roofing, 6" seamless gutters, & gutter guards. As a truly local and family-owned business with our in-house crew and technicians, our #1 priority is to provide homeowners all over the Triangle with top-quality products and workmanship. No shortcuts or cutting corners for us. We also have an amazing office staff dedicated to serving and supporting our customers every day. Call 703-899-2967 for a free inspection or estimate. We look forward to connecting with you soon!

"I had places on my roof where shingles were torn off, nails popped or singles were loose due to a high wind storm that recently occurred. I called Ashburn Roofing and they responded that morning and quickly repaired the damage. Jose did a fantastic job. He assessed the damage, gave me a fair price and quickly got to work. The roof repair was completed in a minimum amount of time. He also responded quickly again when some shingles came loose again in the next storm. I was very impressed with the depth of knowledge Jose has, ability to provide excellent Customer service, accurate and in-depth insight of my roof’s condition and his being ability to provide a very rapid solution to my roofing problem. I would very highly recommend this local company if you need any roofing work done on your home. I also received a military discount."

George D on March 2025

Welcome to Ashburn Roofing, your neighborhood roofing specialist. Based in Winchester, Virginia, we serve the entire Triangle Area. We specialize in asphalt roofing, 6" seamless gutters, & gutter guards. As a truly local and family-owned business with our in-house crew and technicians, our #1 priority is to provide homeowners all over the Triangle with top-quality products and workmanship. No shortcuts or cutting corners for us. We also have an amazing office staff dedicated to serving and supporting our customers every day. Call 703-899-2967 for a free inspection or estimate. We look forward to connecting with you soon!

"I had places on my roof where shingles were torn off, nails popped or singles were loose due to a high wind storm that recently occurred. I called Ashburn Roofing and they responded that morning and quickly repaired the damage. Jose did a fantastic job. He assessed the damage, gave me a fair price and quickly got to work. The roof repair was completed in a minimum amount of time. He also responded quickly again when some shingles came loose again in the next storm. I was very impressed with the depth of knowledge Jose has, ability to provide excellent Customer service, accurate and in-depth insight of my roof’s condition and his being ability to provide a very rapid solution to my roofing problem. I would very highly recommend this local company if you need any roofing work done on your home. I also received a military discount."

George D on March 2025


Avatar for Marshall Roofing Siding and Windows
Marshall Roofing Siding and Windows
7220 Telegraph Square Dr
4.74(
890
)
Approved Pro
Marshall Roofing Siding and Windows
7220 Telegraph Square Dr
4.74(
890
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2534 local quotes requested

Mar­shall Roof­ing, Siding & Windows is a top roofing, sid­ing, win­dows, and gut­ters com­pany based in North­ern Vir­ginia. Throughout the years providing the highest level of cus­tomer ser­vice and 100% home­owner sat­is­fac­tion has been the pin­na­cle principle at Mar­shall Roof­ing Sid­ing & Win­dows. The belief that each and every home­owner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)

"It was time to replace my roof and I requested several estimates from roofing companies. I selected Marshall Roofing Siding and Windows. It was not the cheapest estimate but the estimate assessment by Mr. Chris Butler, of Marshall Roofing, was the most thorough. Mr. Butler inspected the roof, went into the attic (and found a bathroom vent venting into the attic instead of outside), went into my screened in porch to determine what kind of nails to use so that they would not come through the tongue and groove ceiling and he noticed some old satellite dishes that could be removed. Marshall roofing updated the proposal several times with all of my concerns and additions. This is great customer service! When it came to choosing a shingle color, we struggled to find the right color. Mr. Butler kindly offered to bring out additional shingle samples to us on a Friday afternoon. Again, above and beyond customer service. Mr. Butler also worked with us to find and install an attic fan specifically designed to be quiet when running. The job started promptly on time and was finished in two days. Mr. Butler came out as the job was wrapping up and when the crew finished packing up, on his own, he did a second magnetic sweep around my house to find any nails that may have been missed during the magnetic sweep performed by the crew. Again, great customer service! We are very happy with the workmanship and customer service that we received from Marshall Roofing and would highly recommend their services!!"

David T on April 2023

Mar­shall Roof­ing, Siding & Windows is a top roofing, sid­ing, win­dows, and gut­ters com­pany based in North­ern Vir­ginia. Throughout the years providing the highest level of cus­tomer ser­vice and 100% home­owner sat­is­fac­tion has been the pin­na­cle principle at Mar­shall Roof­ing Sid­ing & Win­dows. The belief that each and every home­owner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)

"It was time to replace my roof and I requested several estimates from roofing companies. I selected Marshall Roofing Siding and Windows. It was not the cheapest estimate but the estimate assessment by Mr. Chris Butler, of Marshall Roofing, was the most thorough. Mr. Butler inspected the roof, went into the attic (and found a bathroom vent venting into the attic instead of outside), went into my screened in porch to determine what kind of nails to use so that they would not come through the tongue and groove ceiling and he noticed some old satellite dishes that could be removed. Marshall roofing updated the proposal several times with all of my concerns and additions. This is great customer service! When it came to choosing a shingle color, we struggled to find the right color. Mr. Butler kindly offered to bring out additional shingle samples to us on a Friday afternoon. Again, above and beyond customer service. Mr. Butler also worked with us to find and install an attic fan specifically designed to be quiet when running. The job started promptly on time and was finished in two days. Mr. Butler came out as the job was wrapping up and when the crew finished packing up, on his own, he did a second magnetic sweep around my house to find any nails that may have been missed during the magnetic sweep performed by the crew. Again, great customer service! We are very happy with the workmanship and customer service that we received from Marshall Roofing and would highly recommend their services!!"

David T on April 2023


Avatar for Apex Construction, LLC
Apex Construction, LLC
3703 Kenway St
5.00(
3
)
Approved Pro
Apex Construction, LLC
3703 Kenway St
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
213 local quotes requested

Apex Construction, LLC is your go-to choice in WASHINGTON D.C. for all your Roofing needs. From installation to repair, our expert team is here to ensure your home is protected. Contact us today!

"We hired Apex Construction for our roofing and were very happy with the experience. We ended up hiring them again for our siding and again to replace the shutters on our home. Mike Fann took the time to answer all questions about each project. All work started on time and was completed as scheduled. We would definitely hire Apex Construction again."

Rhonda F on November 2020

Apex Construction, LLC is your go-to choice in WASHINGTON D.C. for all your Roofing needs. From installation to repair, our expert team is here to ensure your home is protected. Contact us today!

"We hired Apex Construction for our roofing and were very happy with the experience. We ended up hiring them again for our siding and again to replace the shutters on our home. Mike Fann took the time to answer all questions about each project. All work started on time and was completed as scheduled. We would definitely hire Apex Construction again."

Rhonda F on November 2020


Avatar for  GoodGood Roofing & Siding
GoodGood Roofing & Siding
615 S FREDERICK AVE 301
4.89(
9
)
Approved Pro
GoodGood Roofing & Siding
615 S FREDERICK AVE 301
4.89(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
102 local quotes requested

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

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Roof sealant applications FAQs

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 homeowners guide to roof sealant applications
From average costs to expert advice, get all the answers you need to get your job done.
standing seam metal roof on a house
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