How do I know if I need a new roof or siding?

Common signs include missing or curling shingles, leaks, mold, cracked siding, or visibly aged materials.

How long does a roof or siding replacement take?

In our experience, most of our residential roofer jobs are completed in 1-3 days, while siding projects typically take 3-7 days, depending on the size and complexity of the home.

What types of roofing materials do you use?

We work with a wide range of materials, including asphalt shingles, metal roofing, cedar shake, and flat roofing systems like TPO and EPDM.

Flat Roofing

Your Trusted Partner in Flat Roofing Solutions

American Group Construction Inc. is the trusted name for all your flat roofing needs in Northern Virginia. Our quality workmanship and fair pricing have made us a leader in the roofing industry. Whether you need a new flat roof installation or repairs for your existing one, American Group Construction Inc. is your smart choice to solve any flat roofing issues. Call us today at 571-200-9317 for a consultation—we’re happy to assist with your flat roofing needs.

Advantages of Flat Roofing:

Flat roofing offers exceptional durability, with our installations providing a lifespan of 20 to 30 years.
It’s a low-maintenance solution that eliminates the need for frequent coatings, sealants, complicated installations, or rusting drains.
Flat roofs are both strong and adaptable, making them suitable for a wide range of applications, including sheds, rooftop decks, homes, garages, and large industrial and commercial buildings.

Thermoplastic Polyolefin (TPO) Roofing

TPO is a single-ply roofing membrane rapidly gaining popularity in the roofing market. This system consists of a single layer of synthetic material reinforced with scrim, designed specifically for flat roofs.

TPO membranes are available in sheets that are 10, 12, or 20 feet wide and are rolled up for transport. The National Roofing Contractors Association (NRCA) reports that TPO now holds about 40% of the commercial roofing market share, attributed to its various advantages: Key benefits of TPO roofing include

Strength and Durability: TPO roofs are recognized for their resilience against chemicals, fire, and wind.
Energy Efficiency: The reflective surface of TPO effectively reflects UV rays, lowering cooling costs and enhancing energy efficiency.
Low Maintenance: TPO roofs require minimal upkeep, ensuring long-term performance.
Environmentally Friendly: Fully recyclable, TPO offers a sustainable roofing solution.
Thermal Stability: TPO can expand and contract with temperature fluctuations without compromising its performance, making it ideal for diverse climates.

Ethylene propylene diene terpolymer (EPDM) Roofing

EPDM (ethylene propylene diene terpolymer) is a durable synthetic rubber roofing membrane commonly used on low-slope buildings throughout the United States and around the world. Made from ethylene and propylene sourced from oil and natural gas, EPDM comes in black or white and is available in widths ranging from 7.5 to 50 feet, with thicknesses of 45 and 60 mils. It can be installed through full adherence, mechanical attachment, or ballast, with seams sealed using liquid adhesives or specially designed tape. The key benefits of EPDM roofing include:

Leak-Proof Design: EPDM roofs are engineered to prevent leaks, keeping your building dry and protected.
Enhanced Insulation: The excellent seal provided by EPDM improves insulation, helping reduce energy costs.
Weather Resistance: Our EPDM installations are built to withstand harsh weather conditions, ensuring a long lifespan.
Environmentally Friendly: Made from recyclable rubber, EPDM is a sustainable roofing option.
Low Maintenance: EPDM roofs require minimal upkeep, offering a hassle-free solution for your commercial property.

At American Group Construction, we specialize in providing top-quality flat roofing services to both residential and commercial clients. With a combined 25 years of experience in the industry, our team of certified professionals is dedicated to ensuring your property is equipped with a durable, weather-resistant, and aesthetically pleasing flat roof.

Whether you’re looking to install a new flat roof or upgrade an existing one, our team is here to guide you through the roofing process, ensuring a seamless experience from start to finish.

Installing a flat roof brings countless benefits to your property, including time and labor savings due to its efficient setup. A well-installed flat roof not only increases longevity but also prevents future issues, ensuring peace of mind. We are committed to providing the highest level of service, leaving no detail overlooked in delivering a smooth and streamlined process that guarantees complete customer satisfaction.

For expert flat roof installation or repair, trust the professionals at American Group Construction Inc. Call us today at 571.200.9317 for your free roof estimate!

They replaced the roof on several rental properties and provide great service at a reasonable price. I highly recommend them.

Roofing Gallery

High-Performance Service

Explore what our roofing materials look like on these beautiful homes.

An Unmatched Reputation

See What Our Clients Are Saying

    
 
 
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   Richard Trombly 
 
 
 
 Trustindex verifies that the original source of the review is Google. American Group's installation crew did a great job installing my gutter helmet.  I'm sold on this roofing company.
  
 
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   Amy Drake 
 
 
 
 Trustindex verifies that the original source of the review is Google. Isai with American Group Construction is just wonderful. I first found Isai about 9 years ago when had a leaky skylight when we first moved in to our home (we bought >100 year old house). I went through about 20 contractors before I found Isai. He was the only one to actually get on the roof to check and found it was the roof, not the skylight, causing problems. His crew replaced the lower roof with new skylights in just a day. He also has a great guarantee on his services. When we thought we had a leak in the roof when it started pouring like a waterfall from the dining room, he came right out the next day to check it out. Turns out, the HVAC left a hole in the side of our house when HVAC guy installed a new unit upstairs (that is a whole other story). But Isai also determined that the upstairs roof had some issues that needed to replaced. Once again, his crew replaced the upper roof in a day and did a great job. He also replaced our garage roof at a later date. We then had a leak through one of the skylights that we replaced. Isai came out the next day. He determined that the skylight was fine but found that an upstairs window was leaking in water (whoever originally fixed up this house just literally put bandaids over everything and now everything was coming off). We saved up the money to fix our whole outside of our house. We needed a general contractor to do the outside porch/deck, mudroom repair, and stone foundation. Isai did all the siding, windows, and doors. Isai has made our house look beautiful - a red farmhouse type. Isai is great to work with, especially as a woman. I have had so many contractors treat me poorly or ignore me because of being a woman. But he treats everyone with respect. He is very detailed, reasonable, and gives many options. He was willing to work with us when we had hiccups and delays with the first general contractor (too bad Isai is not also a general contractor). He will fine tune until you get your vision. I now have my dream home. Trust Isai, Harry, and American Group Construction and you will not be disappointed.
  
 
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   Ann Timbers 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have dealt with several roofers over the years and this company has, by far, been the best. Everyone is courteous, and knowledgeable. They show up promptly and document their work. I can't say enough good things about this company. I would highly recommend them for your roofing and gutter needs.
  
 
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   Toryalai Alami 
 
 
 
 Trustindex verifies that the original source of the review is Google. American Group Construction recently completed my house roof replacement, nice people and very professional. I am very happy with their work and quality.
  
 
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   ST D 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can’t recommend Isai from American Group highly enough—outstanding service, clear and detailed explanations, and very fair pricing. He’s incredibly honest and immediately pointed out that others had misdiagnosed the issue—I didn’t need to replace the entire gable after all. He saved me time, money, and a lot of unnecessary stress!
  
 
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   Mike Tarlton 
 
 
 
 Trustindex verifies that the original source of the review is Google. American Group Construction, Inc. did a fantastic job replacing my roof!  Isai Fonseca, the owner, was very knowledgeable, professional, and easy to work with from start to finish.  The actual work was done quickly and professionally at a very fair and reasonable price.  I would definitely recommend him and I will use again when I need roofing.
  
 
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   Carlos Marquina 
 
 
 
 Trustindex verifies that the original source of the review is Google. We highly recommend American Group Construction.  I found them through Angie’s list, because we needed to replace our roof. I called them on a late Saturday for a quote and they came the next day, on Sunday.  They were the only company who agreed to work on my schedule.  At the beginning, I had in my mind to do repairs only and replacing the roof in a couple of years, because my 3 previous quotes to replace the roof were too expensive for my budget.  When Isai came he took several pictures of my roof, and his quote for replacing the entire roof was very, very, very affordable.  Then, he explained to me the process and we discussed about any hidden damage that he could discover when replacing the roof, so everything was crystal clear. He found 5 damaged plywood, sent me the pictures and proceeded to replace them. After finishing the job, they gave me the certificate of completion for my insurance company, that lowered my annual insurance premium from $2800 to $928.  We are very happy with American Group Construction, a family owned company, they were very professional, reliable, and with the lifetime warranty on my roof, we couldn’t ask for more.  Call them, they will go above and beyond and you’ll end up with an extraordinary result. Thank you!
  
 
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   Rich Dudley 
 
 
 
 Trustindex verifies that the original source of the review is Google. I'm very happy with the work American Group Construction did replacing an outside door, painting other outside doors, solving an issue with my gutters, and caulking my skylights.  Isai Fonseca, President of the company, was personally involved in all aspects of the work and quickly replied to texts as we tried to find a solution for a gutter issue.  American Group Construction replaced my roof several years ago, which was a positive experience and led me to request the recent work.  I've been very happy with the quality of work and the attentiveness of Isai.