Casement Windows For a Residential Mansion in Seattle, WA

Mansion by the Water, Seattle, WA

On the picturesque Bainbridge Island, a residential mansion stands tall and proud, boasting its three floors and breathtaking views of Pudget Sound. It's a stunning piece of architecture that blends harmoniously with the surrounding nature, offering an oasis of peace and serenity.


The mansion's proximity to the water offers unparalleled views of the sound and the Seattle skyline in the distance. Our casement windows on every floor of the house provide a seamless connection between the interior and exterior, allowing the homeowner to enjoy the stunning scenery from the comfort of his home. 

As the exclusive provider of windows and entry doors for this magnificent mansion, Doorwin takes pride in contributing to its beauty and functionality. Our push-out casement windows perfectly complement the house's elegant design, adding a touch of sophistication and luxury to every room.


To ensure the longevity of the entry door, especially considering its proximity to the water, we implemented additional measures to protect the wood materials from corrosion and moisture. Our team employed advanced techniques and treatments to enhance the door's resistance to the elements, extending its service life and maintaining its beauty for years to come.

The solid wood used for this entry door is carefully selected for its durability and natural beauty. Each piece is handcrafted by skilled artisans who bring out the unique character and grain patterns of the wood, resulting in a door that is not only functional but also a stunning focal point of the mansion's entrance.

What we did

Whether it's the seamless integration of the windows or the striking presence of the solid wood entry door, Doorwin's contributions to this residential mansion have transformed it into a true architectural marvel. The combination of our high-quality materials, skilled craftsmanship, and dedication to excellence has resulted in a home that not only captures the beauty of its surroundings but also stands as a testament to timeless elegance and exceptional quality.

The local environment and weather conditions were taken into account during the design and manufacturing process. Our team of experts ensured that the windows and doors are energy-efficient and able to withstand the harsh winters and mild summers of the Pacific Northwest. The windows and doors provide excellent insulation, keeping the house warm in winter and cool in summer, while also allowing plenty of natural light to fill the rooms.


To address the demanding weather conditions, our team designed and manufactured windows with an impressive U-value of 0.19, exceeding industry standards for energy efficiency. This low U-value signifies the windows' ability to minimize heat transfer, keeping the interior spaces comfortably insulated and reducing energy consumption for heating and cooling.


In addition, the solid wood entry door we provided boasts a U-value of 0.28, demonstrating its excellent thermal insulation properties. This ensures that the door effectively blocks unwanted heat loss or gain, maintaining a comfortable indoor environment throughout the year. 

Throughout the project, our collaboration with the homeowners was marked by continuous communication and a shared commitment to achieving the best possible outcomes. By leveraging our expertise and understanding of the local climate, we were able to provide fenestration solutions that not only meet the functional and aesthetic requirements but also exceed performance expectations.


When the client received the goods, they were thrilled with the quality of our products and expressed their satisfaction in glowing terms. At Doorwin, we're committed to delivering the best possible products and services to our clients, and it's always a joy to hear that our efforts have been appreciated. We take pride in our work, and we're honored to have contributed to this magnificent project.

If you have other design ideas or want to see other complementary products, please click on the link below if you are interested. Doorwin offer various lines of windows and doors to meet all your home or commercial improvement needs

Products Used in the Project

French Windows (Push-Out Casement Windows)

One of the standout fenestration elements in this residential mansion project is our exquisite French windows, specifically the push-out casement windows. These windows not only enhance the architectural aesthetics but also offer exceptional functionality and performance.

To elevate the property’s performance and security, we incorporated German-imported hardware that meets the highest industry standards. These premium-quality hinges, locks, and handles ensure smooth operation, enhance security, and add a touch of sophistication to the overall design.

High-Performance Materials

To ensure long-lasting durability and exceptional performance, these windows are constructed with a combination of premium materials. The frames are meticulously crafted from oak wood, known for its natural beauty and strength. The wood is carefully selected and treated to withstand the challenges posed by the coastal environment, including moisture, corrosion, and temperature fluctuations.


The thickness of the aluminum cladding plays a crucial role in enhancing the structural integrity and longevity of the windows. With a thickness of 1.8mm, the aluminum cladding offers exceptional strength, ensuring that the windows can withstand strong winds, heavy rain, and other external forces that may be encountered in coastal areas. 

Technoform Bautec™’s Sealing Strip

The sealing strip is a vital component that plays a crucial role in ensuring optimal thermal insulation and weather sealing. It is strategically placed between the sash and the frame of the window, creating an airtight seal that prevents drafts, heat loss, and moisture infiltration.

By integrating Technoform Bautec's high-performance sealing strip into our French windows, we are able to minimize heat transfer and maintain a more stable indoor temperature. This means that during colder months, the windows help to retain heat inside, reducing the need for excessive heating and resulting in energy savings. Similarly, during warmer months, the sealing strip prevents unwanted heat gain from outside, keeping the interior cool and comfortable.



Custom Divided Lights

Divided lights are decorative elements that add charm and elegance to windows. They create the illusion of multiple smaller panes of glass within a larger window, enhancing the visual appeal of the overall design. Our custom divided lights are available in various styles, including GBG (grilles-between-the-glass), simulated divided lights, and authentic divided lights.

GBG, or grilles-between-the-glass, is a popular choice among homeowners looking for a sleek and low-maintenance option. With GBG, the grilles are permanently sealed between the glass panes, providing a seamless and easy-to-clean surface. This design offers the aesthetic appeal of divided lights without the need for frequent maintenance or cleaning.

Simulated divided lights offer a similar visual effect to authentic divided lights but without the individual glass panes. Instead, they feature horizontal and vertical bars applied to the exterior and interior surfaces of the glass, creating the appearance of separate smaller panes. Simulated divided lights provide a classic and timeless look, adding character and charm to your windows.

Solid Wood Entry Door

When it comes to the grand entrance of this beautiful house, our solid wood entry door is the way. Crafted with meticulous attention to detail, this traditional double door exudes elegance and charm. The door is constructed using solid oak wood, known for its exceptional strength, durability, and natural beauty.

Extra Processing to Anti-Moisture

To ensure the longevity of the door and protect it from the effects of moisture and humidity, we apply extra processing techniques to the wood. This includes specialized treatments and finishes that enhance its resistance to moisture, preventing warping, swelling, or rotting over time. Our solid wood entry door is designed to withstand the challenges posed by its proximity to the lake and the high humidity of the area. 

German-Imported Hardware Systems

To complement the classic design of the door, we have carefully chosen german-imported hardware. This includes high-quality hinges, handles, lock cylinders, and other components that guarantee smooth operation, security, and longevity. The german-imported hardware not only adds functionality but also enhances the overall aesthetic appeal of the door.

Custom Design

One of the standout features of our solid wood entry door is the custom-shaped panels. These panels are meticulously designed and crafted to add a touch of uniqueness and sophistication to the door's appearance. Whether you prefer intricate patterns, geometric shapes, or more organic forms, our skilled craftsmen can bring your vision to life. Each custom-shaped panel is carefully integrated into the door's design, enhancing its visual impact and making a statement for your home's entrance. 

Why Doorwin?


We take pride in providing our customers with top-quality windows and doors that meet the highest standards of performance and durability. Our commitment to quality is reflected in our use of the best materials, such as fully tempered glass and high-quality hardware from reputable German brands. We believe that our customers should never have to compromise on quality, and that's why we offer a 10-year warranty on our products‘ hardware parts. In addition, our TPS glazing technology ensures that our insulated glass units are free from air leakage and fogging issues, backed by a 25-year warranty.

Don't just take our word for it - our customers have been thrilled with the quality of our products and service, and we have the testimonials to prove it. We are proud to have built a reputation for excellence in the industry, and more and more contractors and builders are turning to us for top-quality windows and doors at a competitive price.

Factory-Direct Pricing

At Doorwin, we understand that cost is one of the biggest concerns for our customers. That's why we're committed to providing transparent pricing for all of our products. Our pricing is straightforward, and what you see is what you get. There are no hidden fees or additional costs to worry about.  We understand that our customers may compare our prices with local manufacturers. That's why we're confident in the value that we offer. We're proud to say that we can offer top-quality products at a fraction of the price of local merchants in Europe and America. Our products are manufactured in our state-of-the-art facilities in China, where we've invested in cutting-edge technology and streamlined production processes to ensure that we can offer our customers the factory-direct value.

We believe that our commitment to quality and transparency sets us apart from other manufacturers. We want our customers to feel confident in their purchasing decision, knowing that they're getting a high-quality product at a fair price. So whether you're looking for windows, doors, or any other products, you can trust Doorwin to provide you with the best possible value.


Design Assistance Service

In addition to providing top-quality windows and doors at affordable prices, we also offer design assistance services to help clients accurately control their budgets. Our expert team can analyze your overall plan and provide a schematic design that helps determine which products fit within your cost parameters. We understand that cost is often a primary concern, which is why we offer recommendations such as using lower-cost products in inconspicuous locations to reduce the overall budget. For example, if a room is not exposed to long periods of sunlight, we may recommend not using Low-E glass. In unimportant rooms such as toilets or storage rooms, we may suggest using PVC or aluminum windows instead of solid wood windows. Our goal is to ensure that our clients can achieve their design vision while staying within their budget.

Contact Us

Thank you for taking the time to learn more about Doorwin and our commitment to providing top-quality windows and doors at unbeatable prices. We believe that every project is unique, and we are dedicated to working closely with our clients to help them achieve their vision while staying within their budget. If you have any questions about our products or services, please do not hesitate to contact us. Our team of experts is always ready to assist you in finding the perfect windows and doors for your project. Thank you again for considering Doorwin as your trusted partner.