Window Installation

Window Replacement
Rockville Maryland

We’re committed to helping homeowners improve their home’s comfort, energy efficiency, and good looks!

We Are Replacement Window Installer In Rockville, MD

Penwin Roofing is a Maryland-based window installer the serves the mid-Atlantic region for replacement doors & windows. Replacing your old, drafty windows is the quickest way to update the look of your home and instantly make it more energy efficient. We Install Windows In Rockville, MD!

Our replacement window options are deep! We offer vinyl, aluminum, metal, and wood frame options plus all sorts of sliders, crank windows and fixed glass options. Your window choices are insane with Penwin Roofing & Windows.

Your Trusted Partner for Window Replacement in Rockville, MD and Beyond

Are you looking to enhance the beauty, comfort, and energy efficiency of your home in Rockville, MD? Look no further than Penwin Roofing & Windows – your dedicated local partner for exceptional window replacement solutions. With a commitment to quality, craftsmanship, and customer satisfaction, we bring a fresh perspective to window replacement, ensuring your home receives the transformation it deserves.

Why Choose Penwin for Window Replacement?

At Penwin Roofing & Windows, we understand that your home is your haven – a place where memories are created, and dreams come to life. That’s why we take pride in offering top-tier window replacement services that go beyond mere aesthetics.

Rockville Roofing Installer

Discover how our expertly installed windows seamlessly blend with your home’s architecture, adding a touch of timeless elegance to every corner.

Rockville Roof Repair

Experience the joy of sunlight and fresh air as our thoughtfully designed windows effortlessly connect your interior spaces to the beauty of the outdoors.

Roof Leak Detection

Witness the transformation of your home’s energy efficiency with our advanced window replacements, designed to save you money while keeping you comfortable year-round.

Experience Outstanding Window Replacement and Exceptional Customer Service

At Penwin Roofing & Windows, we pride ourselves on delivering more than just new windows – we provide an experience that encompasses great customer service, high-quality materials, and outstanding results. Whether you’re embarking on a window replacement project or looking to enhance your home with entry doors, our locally owned and operated company is your top-rated choice.

What are the Benefits of Window Replacement?

When it comes to window replacement, we understand that you’re not just seeking new windows; you’re looking for a solution that combines functionality, aesthetics, and energy efficiency. Our team of experts is here to guide you through all the options available, ensuring you make an informed decision that suits your unique needs. From window repair to full replacements, we handle every aspect of your project with precision and care.

Decrease in Energy Costs

There are several benefits of replacing old windows. First, window replacements help decrease energy bills, which is our customers’ most significant benefit.

No More Drafts

Our customers who replace their windows find enhanced comfort. Comfort increases because their windows are no longer drafty. Elimination of drafts helps to keep the interior home’s temperature at a comfortable level.

Protection from Ultraviolet Rays

New windows increase the life of carpeting, flooring, and furniture.

Increases the Home’s Value

Upgrading windows increase your home’s value and offer a more attractive curb appeal. In addition, new buyers know that this is one expense they do not have to cover.

Enhances Safety and Security

Our windows are less likely to shatter and cause injury if they should break. In addition, these windows offer enhanced safety because they have locks and sensors, making it more difficult for intruders to break into the home. At the same time, these windows are easier to operate when opening and offer a quick escape during an emergency.

In addition, external blinds have cords that can injure a little child. Therefore, our internal blinds do away with external cords.

Reduces Noise from Outside

Our windows have double and triple panes with argon gas between the glass layers. This design cuts down on outside noises and moisture. As a result, your home becomes a quiet oasis.

Maintenance Free

Technology has made new windows easier to clean from the inside, and there is no maintenance or upkeep to the window frames. Some windows have built-in blinds or shades for added security and privacy. You will never have to rewash the blinds since they are built into the window.

Decrease in Outside Allergens

Windows with built-in shades eliminate the external blinds and curtains that accumulate dust and allergens.

When is it Time to Replace Windows On Your Rockville Home?

When is it Time to Replace Windows?
You know you need new windows when you feel drafts from your old windows. Likewise, if any of your windows are cracked and warped, they need replacing. If you have noticed your energy bills increasing, it is not always the economy, but the condition of your old windows.

Older windows tend to build up condensation inside the window. As a result, windows may fog up and become moist. If you have old double-pane windows and condensation builds up between the panes, the seal is no longer doing the job it should, and the window needs replacing.

Many older homes still have single-pane windows. If this is your case, your windows need replacing as soon as possible. Single-pane windows have little to no benefit. In addition, these windows are a safety hazard. If it is difficult to open your windows, it is time for replacements.

We Offer A Full Range of Roofing & Window Services In Rockville, Maryland


Not Sure About Your Renovation or Roofing Needs Around Rockville, Get In Touch With Us!

How Can We Help?
  • Roofing Installation
  • Replacement Windows
  • Roof Repair
  • Replacement Doors
  • Roof Maintenance
  • Kitchen Remodeling
  • Siding & Trim Installation
  • Metal Roofing
  • Gutter Installation
  • Emergency Roof Repair
  • Bathroom Remodeling

How Do I Know What Kind of Windows I Need?

Some customers believe that windows are windows, and there is little difference. However, you may be surprised that there are many variances in windows, such as styles and materials. We help guide you to new windows matching your budget and taste, from the style of the windows to the quality of materials put into each window. The Penwin Company is here to help guide you to the best window for your home or business and work around your budget. Our window options include vinyl, aluminum, and wood.

We Have Been Serving Rockville, Maryland Since 2004!

Professionally Installed Windows are Essential Year Round

Our team of professional window installers is certified and trained. We are licensed, bonded, and insured. Penwin accepts nothing but the best quality work from our skilled technicians. Our window replacement company works with several focuses. We embrace our years of experience, quality of artistry and materials, energy savings, interior comfort, curb appeal, the value of the home or business, tax deductibles, and affordability for each client’s unique needs.

Our professional representatives meet with you to determine what windows will work for you and your budget. This consultation is free, and we welcome meeting you to discuss window options. Quality windows are essential all year, especially during the blistering cold winter months, where windows help keep the valuable warmth inside. In addition, quality windows satisfy homeowners in the summertime to keep out the blistering heat and keep your home cool.

We Install More Than Just Windows In Rockville!

In addition to our energy-efficient and tax-deductable window replacements, we offer the following quality services.

  • Roof Installation
  • Roof Repairs
  • Detection of leaks, increasing energy costs
  • Bathroom and Kitchen Remodeling
  • Siding

Unparalleled Quality, Competitive Pricing, and Timely Service

We believe that home improvements should never compromise on quality or break the bank. That’s why we offer high-quality materials and craftsmanship without the exorbitant price tag. Our competitive pricing ensures you get the best value for your investment, allowing you to save money while enjoying the benefits of top-notch window replacements and entry doors.

Our commitment to a timely manner sets us apart – we understand that your time is valuable, and we work diligently to complete your project within the agreed-upon timeframe. Whether it’s window replacement or other home improvement projects, we believe in delivering excellence on schedule.

Years of Experience Installing Windows In Rockville, MD Equals Quality and Customer Satisfaction

The Penwin Roofing & Window Company has years of experience in the industry of professionally installed window replacements. Our owner, Horace Pennix, started his family-owned and operated window contracting business in 2004; we have always done right by our clients.
As a result, our prices are always fair, affordable, and competitive. We are sensitive to the needs and budgets of our customers and work tirelessly to remain within their budget needs.

When you choose Penwin Roofing & Windows, you’re choosing a company that has earned its reputation for excellence. Our customers have highly recommended us for our great experience, exceptional customer service, and excellent job execution. We take pride in using high-quality materials to ensure the longevity and performance of your windows and doors.

Our partnership with Window Nation, a recognized leader in the industry, enables us to offer you a wide range of top-rated window options. From window replacement to window repair, we cover all your needs under one roof.


As a result, our customers in Rockville, MD, and surrounding mid-Atlantic regions consider us leaders in the window replacement industry. We are increasing property values, increasing comfort, decreasing energy bills, and adding fantastic curb appeal to homes and businesses in the communities we serve.
Our experience with vinyl, wood, metal, and fiber replacement windows is unparalleled anywhere, as we go above and beyond quality in materials and service.


We are partnered with over five manufacturers to give you a more comprehensive range of quality window choices.
So please call today at 301-296-8444 and speak to one of our esteemed and knowledgeable associates about your new window replacement. This consultation is free.

Windows Are Necessary Essentials of Any Home or Business In The Rockville Area Of Maryland

Once you make one of your most significant investments, your home or business structure, know that it requires specific maintenance and upkeep to protect your investment. However, repairs and replacements can also be costly, which is why we do the job right first by inspecting problematic areas, planning our next move, and installing quality materials.

The three most prominent focal points in any home or business are your foundation, windows, and roof. If you do not keep these three things in excellent condition, they will do costly damage to the structure. We have your roof and windows covered for quality replacement or repair with over 18 years of trusted service to the communities we serve.

Contact Us For A Free Quote

View Services Contact Us

Common Questions About replacing Your Windows In Rockville, Maryland

  1. Rockville, MD is located in Montgomery County and is the county seat.
  2. Replacement windows in Rockville, MD are available in a variety of styles, materials, and sizes.
  3. The most popular replacement window materials in Rockville, MD are vinyl, wood, and fiberglass.
  4. Replacement windows in Rockville, MD can be customized with a variety of features such as double-paned glass, low-e coatings, and energy-efficient frames.
  5. The average cost of replacement windows in Rockville, MD is between $400 and $1,000 per window.
  6. Professional installation of replacement windows in Rockville, MD typically costs between $100 and $200 per window.
  7. Replacement windows in Rockville, MD can help reduce energy costs by up to 30%.
  8. Replacement windows in Rockville, MD can help reduce noise from outside and improve the overall comfort of the home.

Replacement Windo Stats For Rockville, Maryland

  1. The average cost of replacement windows in Rockville, MD is $650 – $1,000 per window.
  2. The average cost of labor for installation of replacement windows in Rockville, MD is $100 – $200 per window.
  3. The average cost of materials for replacement windows in Rockville, MD is $450 – $800 per window.
  4. The average lifespan of replacement windows in Rockville, MD is 20 – 25 years.
  5. The average energy savings of replacement windows in Rockville, MD is 7 – 15%.
  6. The average noise reduction of replacement windows in Rockville, MD is 30 – 50%.
  7. The average return on investment of replacement windows in Rockville, MD is 70 – 80%.
  8. The average cost of window treatments for replacement windows in Rockville, MD is $50 – $200 per window.

FAQ’s About Rockville, Maryland

Rockville is a Maryland city near Washington, D.C. Restaurants and shops are clustered around Rockville Town Square, with its lawn and seasonal ice-skating rink. The grounds of the early-1800s Beall-Dawson House include the Stonestreet Museum of 19th-Century Medicine. Civic Center Park has gardens and trails. Northeast, in Rock Creek Regional Park, Meadowside Nature Center has nature and culture exhibits. ― From Google

Elevation: 451′
Population: 67,139 (2021)
Mayor: Bridget Newton
Area code: Area code 240

Is Rockville MD a nice place to live? Rockville is in Montgomery County and is one of the best places to live in Maryland. Living in Rockville offers residents an urban suburban mix feel and most residents own their homes. In Rockville there are a lot of restaurants, coffee shops, and parks.

What is Rockville MD famous for? Rockville is one of Maryland’s oldest towns, with its origins dating back to Colonial America. During Revolutionary times Rockville was known as Hungerford’s Tavern, the name of its most familiar business and landmark.

Who lives in Rockville MD? The racial demographics in Rockville are as follows: 49% White, 20.5% Asian, and 15.4% Hispanic or Latino. 82% of people in Rockville are citizens. Rockville is located in Montgomery County. The zip codes in Rockville are 20847, 20848, 20849, 20850, 20851, 20852, 20853, 20854, 20857, and 20877.Feb 29, 2020

Rockville, MD is a great place to visit! Rockville’s close proximity to Washington D.C. means visitors have access to all the culture, history, and entertainment they could ever ask for. Rockville itself has plenty of attractions as well—from historic buildings and parks, to art galleries and shopping destinations, Rockville has something for everyone. And if you can’t find what you’re looking for in Rockville proper, nearby Bethesda offers even more options. In short: Rockville is the perfect destination for anyone looking for a little bit of everything! Whether it’s exploring the area’s rich tapestry of history or enjoying some retail therapy at one Rockville’s many shops, Rockville provides visitors with a lot of options from outdoorsy things to a fun nightlife.

Top sights in Rockville

Croydon Creek Nature Center

Movement Rockville

Ready to take the next step in your home improvement journey? Call us today to schedule your free estimate. Our team will walk you through the process, discuss all the options available, and provide expert advice tailored to your project. Experience the Penwin Roofing & Windows difference – your gateway to exceptional window replacement, great customer service, and an enhanced living environment.


Your Trusted Partner for Comprehensive Home Improvements

At Penwin Roofing & Windows, we’re your one-stop solution for all the windows and exterior home improvements you need. As an authorized partner of Window Nation, a renowned name in the industry, we bring you a vast array of high-quality American windows to transform your living space.

Unmatched Quality Service and Expertise

With a track record of delivering quality service to past customers, we take pride in our ability to exceed expectations. From window replacements to glass repairs, our skilled professionals are dedicated to ensuring your satisfaction every step of the way. Our commitment to excellence extends to offering free estimates, enabling you to make informed decisions about your home improvement projects.

Affordable Excellence with Competitive Prices

We understand the importance of competitive pricing in today’s market. That’s why we offer you the best of both worlds – top-notch products and services at a competitive price. Say goodbye to compromising on quality or breaking the bank. We accept major credit cards for your convenience, making the payment process hassle-free.

Experience the Beauty of Vinyl Siding

Beyond windows, we specialize in enhancing your home’s exterior through vinyl siding installation. Our team can help you choose from a variety of colors and styles, ensuring your home’s curb appeal matches your unique vision.

Trusted by Government Agencies

Our reputation for great service extends to government agencies as well. We have proudly worked with various government projects, demonstrating our commitment to quality, reliability, and efficiency.

Save Money and Energy with Energy-Efficient Solutions

Home improvements shouldn’t just enhance aesthetics – they should also help you save money and contribute to energy efficiency. Our range of American windows and exterior solutions are designed to do just that. By partnering with us, you’re making an investment in your home’s comfort and your wallet’s well-being.

Secure Your Free Estimate Today

Ready to explore the possibilities? Contact us today to secure your free estimate. Let us guide you through the world of all the windows, vinyl siding options, and other exterior home improvements. Discover how Penwin Roofing & Windows can enhance your home, your comfort, and your savings. Your journey to a more beautiful and energy-efficient home starts here.