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Service Areas


Sterling Roofing

At Milcon Design and Build, we pride ourselves on being a top-tier sterling roofing company, dedicated to serving Northern VA and the DMV area. Our commitment to quality and customer satisfaction sets us apart from the competition, making us the go-to choice for all your roofing needs.

Residential Roofing in Sterling VA

Milcon Design & Build provides top-quality residential roof replacement using GAF Lifetime Roofing Systems. These roofs are designed to protect your home for many years and come with a Lifetime Warranty on materials and installation. We offer up to 30% lower prices than national companies by keeping costs down and using efficient practices.


Our service starts with your first call and includes a detailed inspection, precise measurements, and a no-pressure estimate. Expert professionals handle the installation, ensuring high standards.

Signs You Need Roof Replacement:

  • Missing, curled, or buckled shingles
  • Shingles with moss, algae, or tar streaks
  • Shingle granule buildup in gutters
  • Water stains, mold, or rot in the attic

Commercial Roofing in Sterling

At Milcon Design & Build, we offer top-quality commercial roofing services for businesses in Northern Virginia and Maryland. We use trusted materials from brands like GAF and GACO. Our certified experts provide excellent installation and service. GAF’s TPO roofing is durable, UV-resistant, and energy-efficient. GACO’s roof coatings add protection against leaks and weather damage.


We value honesty and transparency, avoiding pushy sales tactics. Our prices are fair, and we deliver high-quality work. As a locally-owned business, we are deeply connected to the community and provide personalized service.


If you see signs that your commercial roof might need replacement—like missing or damaged shingles, moss or algae growth, granule buildup in gutters, or water damage in the attic—contact us. We also offer flexible financing options to make the process more affordable.


GAF Commercial Roofing Systems

GAF is a trusted name in the commercial roofing industry with over 130 years of experience. Their roofing systems are built to withstand tough weather conditions, providing excellent protection for your property. Here are some key GAF roofing solutions we offer at Milcon Design & Build:


GAF TPO (Thermoplastic Olefin) Roofing:

This roofing system is strong and resists UV light and chemicals. It reflects sunlight, helping to keep your building cool and lower energy costs. It’s a sustainable and cost-effective choice.

GAF EverGuard® PVC Roofing:

This system provides great protection against chemicals and fire, making it ideal for many commercial buildings. It also reflects sunlight, improving energy efficiency.

GAF Roof Coatings:

Our roof coatings extend the life of your roof and protect it from leaks and severe weather.



Roof Repair in Gainesville

At Milcon Design & Build, we know how important your roof is in protecting your home. Sometimes, a roof repair is all you need to extend its life and avoid the cost of a full replacement.

Our Roof Repair Process:

  1. Free Inspection: We start with a free, detailed inspection to find any issues with your roof.
  2. Diagnosis & Plan: We identify the problem and decide on the needed repairs. If a replacement is needed, we provide a detailed quote and deduct the inspection fee from the replacement cost.
  3. Quick Repairs: If repairs are needed, we quickly fix issues like:
    • Replacing missing or damaged shingles
    • Sealing skylights
    • Caulking roof penetrations
    • Refitting pipe collars
    • Securing lifting shingles

    These repairs can make your roof last much longer!

Other Services We Offer in Gainesville Virgina

At Milcon Design & Build, we provide don’t just do roofing, we offer home improvement services to make your home better.

Replacement Windows:

High-quality, energy-efficient replacement windows tailored to the Northern VA and MD climate, with competitive pricing, customizable options, and a professional installation process backed by a lifetime warranty

Entry Doors:

Top-quality ProVia entry doors that combine security, energy efficiency, and customizable options with a professional installation process, backed by a comprehensive lifetime warranty.

Vinyl Siding:

We offer CertainTeed vinyl siding that is easy to maintain, long-lasting, and available in many styles and colors

James Hardie Siding:

Long-lasting, low-maintenance siding that withstands harsh weather conditions and maintains its fresh looks.


Why Choose Milcon Design and Build?


Personalized Treatment:

You deal directly with me, the owner, for a personalized and hassle-free experience.

Top-Quality Materials:

We use the best materials like GAF asphalt shingles, known for their durability and long-lasting performance.

Expert Roofing Contractors:

Our team comprises certified professionals with decades of experience in the roofing industry.

Core Values:

Milcon Design and Build is built on a foundation of integrity, trustworthiness, and accountability.

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So Why Choose Milcon Design & Build?

Because We’re Northern VA & MD’s “Do Whatever It Takes, Only The Best Will Do” Roofing And Exterior Contractor.

At Milcon Design & Build, we have a simple philosophy: Only the absolute best will do. On every single job. For every single customer. Down to every single detail.

That’s not an empty promise. It’s not lip service.

It’s the etched-in-stone company code we follow day in and day out. Zero exceptions.


My Story

For years, I worked my way up the ranks in a major home remodeling company. And I had it made. I was earning very good money and leading and managing teams of people.


Which, ironically, is why it became not so good for me.


I often thought, “Why do I have to wear a suit and a tie to sell a roof? No one is replacing a roof in a suit. It’s a blue-collar job!”


That and a million other reasons led me to start my own venture rooted in core values I could stand behind. Values like integrity, trustworthiness, and accountability, to name a few. Qualities that will show up on YOUR stunning (and cost-effective) exterior remodel.


So to wrap up what could be a much longer letter, I’ll say this:


It would be an honor for us to bring you a quality, locally-driven, above-and-beyond exterior remodel with heart and genuine care.


And to prove my commitment to you – here’s my PERSONAL cell number, where you can CALL ME DIRECTLY.



Warm regards,

Matt Kavanah
Owner and Founder
Milcon Design & Build


Our Testimonials

See For Yourself How Pleased Our Clients Are

Matthew L.


I was satisfied every step of the way

After searching for a business for months I connected with Mr. Kavannah about a few projects I needed done on my house. Roofing and upgraded windows throughout.

All other businesses I contacted felt like they were hustling me, short with me, and always had “extras” they would constantly shove down my throat. Mr. Kavannah listened intently, provided me options that directly benefitted me more than himself, even went out of his way to make sure I was satisfied every step of the way. Great communication, extremely professional, and superb execution of work.

Loren A.


We will certainly recommend them to others

We had Milcon Design & Build replace our roof and they did a fantastic job. Matt, the owner, was great to work with and extremely responsive. He kept us informed until the project was finished. His workers were very nice, but at the same time professional. Everything was cleaned up by them afterwards.

We will certainly recommend them to others. If you give them a call, you'll be glad you did!

Aja W.


I will definitely use Milcon Design & Build again!

My journey with Milcon Design & Build began in March 2023, when I was looking for estimates to replace my patio door. I selected Milcon Design & Build after receiving two other estimates, because I was impressed with Matt's professionalism, his ability to answer my (many 🙂 ) questions in detail, and his prompt response. In our initial meeting, he was able to provide suggestions based on my requirements and his previous installation experiences. He then promptly followed up with the promised estimate.

The next meeting was with his technician to verify that they were going to be able to provide the larger size door I requested without causing any structural damage.

Once the door arrived, we scheduled an installation date and time (June 2023). The crew arrived on time, was very professional, and did an excellent job! Once they were done, the technician walked me through the features of the door: the active vs passive side, how to verify that it was closed and looked, etc.

Needless to say, I am more than pleased, the door looks great! I will definitely use Milcon Design & Build again!

Meagan F.


I highly recommend them for all services

We are very pleased with the work Milcon performed to install our basement sliding door. They were very professional, prompt and very responsive to any questions we had. I highly recommend them for all services you may need. They were also the most reasonably priced of all companies I reached out to. Highly recommend!!

Peter I.


Will use again for future projects!

Contracted Milcon Design & Build for a new roof. Our roof was 20 years old and needed serious help! Matt walked us through the process and had us a new roof installed within 5 days of our initial meeting. They crew was great. Got it installed in 1 day and when the guys were done, it was as if they were never here. Cleanup was on point. Will use again for future projects!

Sal O.


Matt was very easy to work with

Matt was very easy to work with: to the point and no high pressure sales. Price was better than other local contractors for the same materials and warranty. Highly Recommended.



Get A FREE, 30-Minute Quote (Yep. Just 30 Minutes!)

Ready to “cut the fluff” and get a no-nonsense Northern Virginia exterior remodel starting with a stress-free, 30-minute, no-obligation quote from the owner himself?
Then call us at 703-581-2761 or fill out our hassle-free form to schedule your free quote today!

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