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Roof sealant application pros in Bethesda
Quality is our Goal, we are a locally owned and operated company that values honesty and integrity and stands behind our work. We specialize in repairing and installing all styles of roofs and gutters as well of Tuckpointing and waterproofing. And Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!
"After I submitted the project, George called me within a few hours. He scheduled an appointment — an actual time, not a range — the next day and arrived on time. He reviewed the proposed work with me, pointing out various aspects of it that aligned with another proposed contractor. He then gave me an official written quote on the spot. It was lower than quotes, and it was for a definite amount, again, not a range. The foreman came by the next day to get the specifics so he could buy the necessary materials, and work commenced that afternoon. The project took three days, slightly under what they anticipated. The team arrived and left on time, and the areas were tidied up each time. They were also professional and friendly. Unfortunately, they discovered something that had not been done during the home’s original renovation, which George and Jim discussed with me. It was beyond what I wanted to do at the time, but we were able to settle on something that they thought would get the job done and I could agree to. They were excellent at explaining various aspects of the job like this, and I felt comfortable with their recommendations. They also accomplished additional two small tasks, one of which I mentioned I needed to do at a future date, and one that they observed. Both were done under the original agreement, which I appreciated. I definitely plan to use Louise August (a family business) for any projects that arise within their areas of expertise because it was a very good experience."
Troy H on November 2024
Quality is our Goal, we are a locally owned and operated company that values honesty and integrity and stands behind our work. We specialize in repairing and installing all styles of roofs and gutters as well of Tuckpointing and waterproofing. And Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!
"After I submitted the project, George called me within a few hours. He scheduled an appointment — an actual time, not a range — the next day and arrived on time. He reviewed the proposed work with me, pointing out various aspects of it that aligned with another proposed contractor. He then gave me an official written quote on the spot. It was lower than quotes, and it was for a definite amount, again, not a range. The foreman came by the next day to get the specifics so he could buy the necessary materials, and work commenced that afternoon. The project took three days, slightly under what they anticipated. The team arrived and left on time, and the areas were tidied up each time. They were also professional and friendly. Unfortunately, they discovered something that had not been done during the home’s original renovation, which George and Jim discussed with me. It was beyond what I wanted to do at the time, but we were able to settle on something that they thought would get the job done and I could agree to. They were excellent at explaining various aspects of the job like this, and I felt comfortable with their recommendations. They also accomplished additional two small tasks, one of which I mentioned I needed to do at a future date, and one that they observed. Both were done under the original agreement, which I appreciated. I definitely plan to use Louise August (a family business) for any projects that arise within their areas of expertise because it was a very good experience."
Troy H on November 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
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
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
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
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
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
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
As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.
"Pasadena, MD Punched 14 windows, house trim & 6in. gutters and completely satisfied with timelyness, materials, labor, efficient, neat and professional 😀"
Steve R on April 2025
As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.
"Pasadena, MD Punched 14 windows, house trim & 6in. gutters and completely satisfied with timelyness, materials, labor, efficient, neat and professional 😀"
Steve R on April 2025
Transform your space with Washingtonian Companies, your interior/exterior design-build team. Whether it's roofing, windows, siding, decks, kitchens, bathrooms, or additions, we are your trusted partner to bring your vision to life and help personalize your surroundings.
"We were 100% satisfied with Washingtonian and with their work building our addition and deck. Not only was the workmanship and quality of the construction outstanding, but they operated with honesty and integrity. Their goal was our satisfaction and building a quality addition and deck. They accomplished all three and were reliable, dependable and conscientious. At no time did we believe that they had over-committed or were unable to deliver on what they had promised. They never cut corners to rush to another job nor did I ever feel that they were not spending the necessary time to ensure that the work on our job was thorough and complete. Travis, Kris and their crew were 100% professional, communicative and transparent. We will be using Washingtonian again, without hesitation. Our experience was excellent and they did an awesome job."
Walter J on January 2024
Transform your space with Washingtonian Companies, your interior/exterior design-build team. Whether it's roofing, windows, siding, decks, kitchens, bathrooms, or additions, we are your trusted partner to bring your vision to life and help personalize your surroundings.
"We were 100% satisfied with Washingtonian and with their work building our addition and deck. Not only was the workmanship and quality of the construction outstanding, but they operated with honesty and integrity. Their goal was our satisfaction and building a quality addition and deck. They accomplished all three and were reliable, dependable and conscientious. At no time did we believe that they had over-committed or were unable to deliver on what they had promised. They never cut corners to rush to another job nor did I ever feel that they were not spending the necessary time to ensure that the work on our job was thorough and complete. Travis, Kris and their crew were 100% professional, communicative and transparent. We will be using Washingtonian again, without hesitation. Our experience was excellent and they did an awesome job."
Walter J on January 2024
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We are the only company in Maryland offering the “Forever Guarantee” - A guarantee of our workmanship for as long as both you AND the next owner own the home. Unlike other companies we don’t just TELL you something will look good - we SHOW you. We provide full color 3-D renderings of all of our products to show what they will look like on your home PRIOR to you making any decisions or signing a contract. We do this for free the first time we come out as part of our free estimate & design consultation. If you decide to move forward, you don’t have to pay a single dollar until the job is complete and you are satisfied. With the Forever Guarantee, full color 3-D designs before you make a decision, and no payments until the job is complete - our goal is COMPLETE peace of mind for all our customers. We then follow this up with top notch communication, customer service, skill, and quality for Maryland’s leading exterior replacement experience.
"We met with Ryan and Pete who were both extremely professional and knowledgeable. They met with my husband and I discuss new windows for the main floor of our single family home. We have a toddler and newborn and Ryan helped keep our toddler occupied and was very understanding and patient as we had to multitask in taking care of our kids while also discussing the window project. We were impressed by their warm, genuine approach which is very different from a typical salesperson trying to get you to go with their product. You could tell they truly believed in the company, the goals and values, and the product/services they provide. Due to personal reasons we weren’t able to invest in the project right now but we will 100% be contacting Ryan in the future and using Peak for all our future window/roofing needs. When you find a good, reliable company like Peak you want to make sure to spread the word and we will be recommending them to our family/friends/neighbors who need any projects done in their homes."
Nicole L on May 2025
We are the only company in Maryland offering the “Forever Guarantee” - A guarantee of our workmanship for as long as both you AND the next owner own the home. Unlike other companies we don’t just TELL you something will look good - we SHOW you. We provide full color 3-D renderings of all of our products to show what they will look like on your home PRIOR to you making any decisions or signing a contract. We do this for free the first time we come out as part of our free estimate & design consultation. If you decide to move forward, you don’t have to pay a single dollar until the job is complete and you are satisfied. With the Forever Guarantee, full color 3-D designs before you make a decision, and no payments until the job is complete - our goal is COMPLETE peace of mind for all our customers. We then follow this up with top notch communication, customer service, skill, and quality for Maryland’s leading exterior replacement experience.
"We met with Ryan and Pete who were both extremely professional and knowledgeable. They met with my husband and I discuss new windows for the main floor of our single family home. We have a toddler and newborn and Ryan helped keep our toddler occupied and was very understanding and patient as we had to multitask in taking care of our kids while also discussing the window project. We were impressed by their warm, genuine approach which is very different from a typical salesperson trying to get you to go with their product. You could tell they truly believed in the company, the goals and values, and the product/services they provide. Due to personal reasons we weren’t able to invest in the project right now but we will 100% be contacting Ryan in the future and using Peak for all our future window/roofing needs. When you find a good, reliable company like Peak you want to make sure to spread the word and we will be recommending them to our family/friends/neighbors who need any projects done in their homes."
Nicole L on May 2025
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.
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- Wood Shake or Composite Roofing - Install or Replace
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