The Premium Composite Window Maryland Homeowners Trust.

Experience the warmth of real wood and the durability of advanced engineering—without the premium brand-name markup. Background Visual: High-resolution, modern lifestyle image of an upscale home interior featuring the windows.

0% Financing Available | Lifetime Warranty

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Rich Burgan profile picture
Rich Burgan
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Installation was done in one day. Windows work great. No complaints.
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David T. profile picture
David T.
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We received numerous quotes to replace over 30 windows. All of the companies were comparably priced; however, we have decided to proceed with WeatherMaster for our project. Dealing with Kenny has exceeded our expectations. We have asked a lot of him throughout the process and he has been prompt with each response. We are still waiting to get the final measurements and install done, but we don't anticipate any issues given our initial experience. As of now, we are beyond satisfied with the service and look forward to the final product being installed!
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Laura Warner profile picture
Laura Warner
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Had a visit from Tim and he spent a long time with me explaining that my leak was coming from the roof and not the window. While this wasn’t good news, it was incredibly helpful to finally understand what was causing the problem and what I needed to do next. I really appreciated that he took the time to thoroughly inspect everything and explain it to me, even though the issue ultimately wasn’t something WeatherMaster needed to repair. Great customer service and a very honest, helpful experience.
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Joyce Bias profile picture
Joyce Bias
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Very professional and Informative. Awesome work!
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Timothy Durning profile picture
Timothy Durning
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Straightforward and clear from start to completion. They even accounted for one particular window frame which had been damaged. Cold this winter, but you wouldn't have noticed standing near the new windows. In June 2026, had a sliding door put in. Just for kicks, I obtained an estimate from a big, well-known company. Got a good laugh out of it - they wanted twice as much as Weather Master, and it was necessary to sign a contract (cancellable) to actually get the estimate. Not so with Kenny Leutner from WM. Came by, checked out the old door, explained the process, gave me an estimate. The actual door installation was outstanding. The tech, David, was very deliberate at every step of the process, and I was impressed by his attention to all details regarding the new door - really took his time and got it right. Highly recommend these guys - you won't be disappointed.
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Daniel Lawall profile picture
Daniel Lawall
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From the sit down with Jonmark to ordering to install were fantastic! Jonmark walked us through all the options to best suit our need. His expertise was evident. They stayed in contact through the wait for the windows and got in to install in a few days! Install crew worked fast, efficient and clean! They walked me through the window features and made sure I had no other questions. Will have them do the rest of our windows when needed. April 2026: Worked with Jonmark again to replace the rest of our windows. They were very patient with us due to having to work through the tenants to get the work done. Couldn't be happier!!!! June 2026: called in service to have locks replaced on sliding doors and fix a couple of screens. Work was scheduled and completed quickly. Can't recommend them enough!
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Eric Wiest profile picture
Eric Wiest
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Kenny our sales person is great we really appreciate you taking care of us. Now all we need it to set up an install date. The price is amazing just wish we did this a few years ago
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Kevin Matejka profile picture
Kevin Matejka
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Kenny was professional and friendly. He provided a competitive and hassle free price. Install was efficient and high quality. Definitely would recommend
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Kevin Davey profile picture
Kevin Davey
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Definitely recommend WeatherMaster. Had a good experience start to finish. No high pressure tactics, great price and the final product was installed and looks great. This was for the Slocomb sliding glass doors.
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Christopher Riley profile picture
Christopher Riley
Google star 1Google star 2Google star 3Google star 4Google star 5
I bought custom windows in 2011 . They are wonderful. Recently , a small misalignment occurred in my master bedroom window. The technician cam and repaired it immediately. No charge. I’m impressed in this day and age. Thank you again

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Why Pay Just for a Name?

You want the best for your home. But choosing top-tier windows shouldn’t mean paying a massive premium just to cover a national brand’s advertising budget.

Feature Interstate CompositWood National Brands

 

Solid-Core Strength

 

Real Wood Veneer Options

 

SuperCap™ Finish

 

Price-to-Value
Exceptional
High / Premium

Interstate CompositWood meets or exceeds the architectural standards of the biggest names in the industry, delivering unmatched value to Maryland homeowners.

Engineered for the Mid-Atlantic Climate

Weather Defiance

Exclusive SuperCap™ exterior finish resists fading, chalking, and discoloration from brutal summers and freezing winters.

Energy Efficiency

ENERGY STAR® qualified with Low-E coatings and Argon gas. 

Note: Ensure any linked backend quoting tools reflect that these standard line items should not be marked for tempered glass unless specifically required by local code.

Zero Maintenance

Solid-core engineered composite resists rot, warping, and peeling. Never paint a window again.

Authentic Wood Look, Custom Finished for Your Home

Frequently Asked Questions

What exactly is an Interstate CompositWood window made of?

Unlike standard hollow vinyl windows, Interstate CompositWood windows are built using a solid-core engineered composite frame. This structural material is crafted from a proprietary blend of specialty polymer and acrylic resins. The result is a premium replacement window that looks and feels like authentic wood, but boasts architectural strength that is 400% more durable than hollow vinyl and over 500% more durable than fiberglass.

Andersen and Pella manufacture excellent products, but homeowners often pay a heavy premium for their national advertising budgets. For example, Andersen’s composite line uses a material called Fibrex, which is a blend of 40% reclaimed wood fiber and 60% polymer. Pella relies heavily on fiberglass or traditional wood cladding.
Interstate CompositWood competes directly with these premium lines by using its advanced polymer and acrylic resin core, offering a more rigid frame structure and a higher-end architectural appearance. With Interstate, you secure the top-tier structural performance, real pine veneer interior options, and energy efficiency of a luxury window—all at a significantly better price point for the local Maryland market.

No. Maryland’s severe humidity, temperature swings, and heavy rain can cause traditional wood windows to rot, swell, and peel over time. Interstate CompositWood windows are specifically engineered to resist moisture damage, warping, and weather-related deterioration. Additionally, they feature an exclusive SuperCap™ exterior finish technology that protects the window from fading, chalking, and discoloration caused by harsh UV exposure.

Yes. Energy efficiency is one of the primary reasons we recommend this product line. Interstate CompositWood windows are incredibly energy efficient and available with ENERGY STAR® qualifying glass packages. These packages feature advanced Low-E glass coatings, high-performance thermal spacer systems, and argon gas-filled insulated glass. These features aggressively reduce heat transfer, keeping your home cooler during humid Maryland summers and warmer during freezing winters, which ultimately lowers your heating and cooling costs.

No. One of the greatest advantages of Interstate CompositWood is that it delivers the beautiful, authentic look of traditional wood without the grueling upkeep. Because the material resists cracking, peeling, and rotting, you will never need to scrape, sand, or paint the exterior of your windows. They provide high-end curb appeal with virtually zero maintenance.

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