- 7817 Amherst Dr, Manassas, VA 20111
- Industrial Roofing
- Free Estimates
- Licensed & Insured
- Locally Owned & Operated
- Warranties Offered
At AG Window and Siding LLC, we take pride in our versatility and technical expertise, offering a comprehensive range of services that cater to both residential and commercial projects. Based in Manassas, Virginia, we specialize in roof inspections, maintenance, leak repairs, and gutter cleaning, alongside window installation and siding repair. Our organized approach ensures that we manage complex projects from start to finish, delivering durable and high-quality results. Our commitment to attention to detail and reliability sets us apart.
We understand that every project is unique, and we work diligently to transform your vision into reality. Whether enhancing your home’s aesthetics or improving its energy efficiency, our well-coordinated team is dedicated to providing long-term value. We are proud to serve Manassas and the surrounding regions, ensuring that every job is completed thoroughly and to the highest standard.
The majority of customer reviews reflect a highly positive sentiment towards the services provided by the company. Customers consistently praise the quality of workmanship, effective communication, and professionalism of the team. Many highlight the seamless experience from the initial consultation through to the completion of the job, emphasizing satisfaction with both the results and the affordability. The company is noted for its reliability and commitment to customer satisfaction, leading to numerous referrals from satisfied clients.
- Joel and his team provided an amazing service at an affordable price.
- They completely transformed our exterior and worked through several hot days without missing a beat.
- I am highly satisfied with their price, quality of work, effective communication, and hassle-free overall experience.
- They’re a great company and very reliable.
Customers are fully satisfied

Joel and his team provided an amazing service at an affordable price. Joel installed our new windows and repaired part of our siding. We’re very satisfied with the work.

I can not say enough good things about this company. Our home is so beautiful. They completely transformed our exterior. From the moment Joel and Telma came out to measure and show us samples to the quote to them starting the job right away. They worked thru several hot hot days and never missed a beat. Wonderful workmanship. They even hung our new exterior lighting. Family owned business. Professional and polite. A very hard working crew. We are so pleased with the finished product and we continue to get compliments. We have referred them to several other friends as well and will continue to do so. Licensed and insured. Such a blessing to do business with you guys.

I recently used AG Window and Siding LLC for changing all new windows. They have several options and good quality windows. They also offered product guarantee and seven years installation warranty. I am highly satisfied with their price, quality of work, effective communication and hustle free overall experience.
- 7817 Amherst Dr, Manassas, VA 20111
- Industrial Roofing
- Free Estimates
- Licensed & Insured
- Locally Owned & Operated
- Warranties Offered
The average roof replacement cost for a residential home typically ranges from $7,000 to $15,000, depending on factors such as roof size, chosen materials, roof pitch, and labor rates in your area. Premium materials or complex designs may increase the price.
The cost to replace the roof of a commercial building typically ranges from $5 to $12 per square foot, depending on several factors such as roof size, material, labor rates, building type, and local code requirements.
Several factors influence roof repair cost, including the extent of the damage, roof accessibility, material type, labor costs, and whether it’s a general repair or an emergency fix. Minor repairs can start around $150–$400, while major repairs may exceed $1,500.
Roof leak repair cost generally ranges from $300 to $800, depending on the size and location of the leak, the materials required, and labor intensity. Complex leaks involving structural repairs or interior damage will cost more.
Flat roof repair cost for commercial properties usually ranges from $500 to $3,000, depending on the roofing material (TPO, EPDM, PVC), the extent of the damage, and roof accessibility.
Mobile home roof replacement cost typically ranges from $3,000 to $8,000, making it generally more affordable than traditional home roof replacements, due to smaller size and simpler structure.
It's not necessary to stay home during roof replacement. Roofing work is noisy and can cause vibrations inside the house, which might be uncomfortable. Most homeowners choose to leave during major parts of the project, but our team ensures safety and keeps you updated, whether you're home or not.
The timeline for a roof replacement typically ranges from one to three days, depending on the size and complexity of the roof, weather conditions, and material type. Larger or more intricate roofs may take a bit longer, but we always aim for efficient, timely completion.
To hire a roofing contractor, start by researching local companies with good reviews and proper licensing. Request quotes from multiple contractors, verify their insurance and certifications, and ask for references. Always ensure you get a written contract that outlines the scope of work, timeline, and payment terms.
Check if a roofing company is legit by verifying their business license, insurance, and local certifications. Look for memberships in professional associations, read customer reviews, and ask for recent project references. A legitimate company will be transparent and provide all documentation upon request.
When choosing a roofing company, consider their experience, customer reviews, warranty offerings, and quality of materials. Make sure they provide clear communication, detailed estimates, and a solid portfolio of completed projects. Local expertise is also a major advantage for understanding regional roofing needs.
Warning signs that your roofing contractor might be ripping you off include vague contracts, pressure to pay large upfront deposits, lack of proper documentation, and unexplained price increases. Always ask for itemized estimates and written guarantees, and avoid contractors who avoid answering your questions directly.