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Renewal by Andersen® Window Replacement & Patio Door Installation in New Castle, DE

At Renewal by Andersen, we provide New Castle residents with top-notch window replacement and door installation services in the Wilmington area. Our dedication to enhancing your home is matched only by our commitment to delivering quality and durable products.

Renewal by Andersen® Signature Service

Superior product.

Our Fibrex® material, consisting of 40% recycled wood, showcases unmatched strength, outperforming standard vinyl windows in terms of durability and sustainability.

Hassle free process.

Engage with our team of professionals who will guide you through your entire window and door replacement journey. Our industry-leading approach is designed to provide you with a stress-free experience.

Unrivaled beauty.

Create a distinctive look for your home with the help of Renewal by Andersen designers. Choose from our extensive range of window and door styles and customization options, ensuring the perfect fit for your New Castle residence.

Long term value.

Trust the enduring quality of Renewal by Andersen windows, capable of withstanding the extreme weather conditions of Delaware for over two decades. Our comprehensive warranty covers glass, Fibrex® material, and labor costs, giving you peace of mind.

4-Step Process

Design Consultation

Get started with your project with a free design consultation. Our experts are excited to collaborate with you to design your replacement window, bringing your unique vision to life.

Project Planning

Our project managers, known for their attention to detail, ensure a flawless fit through precise measurements. Our master builders craft your windows to meet your exact specifications, maintaining the highest standards before delivery to New Castle.


Enjoy the tranquility that comes with our Renewal by Andersen Certified Master Installers. Our team is committed to protecting your home during the installation process, ensuring a smooth and respectful operation.

Customer Care

Our dedicated customer care team is on standby to offer comprehensive support throughout your installation journey. From maintenance advice to warranty information, we’re here to assist with all your post-installation needs.

Our Products

Replacement Windows

New Castle residents recognize Renewal by Andersen for our all-encompassing window installation services. Customize your residence with our made-to-order replacement windows, offered in a variety of styles and extensive customization options. Choose from an array of colors, hardware, and grille designs, ensuring your windows perfectly accentuate your home’s aesthetics. Begin your home’s transformation by scheduling a free design consultation with Renewal by Andersen today.

Awning Windows

These charming windows, with a top hinge and spacious opening, are perfect for promoting airflow while shielding your interior from the elements. The easy-to-use crank handle allows for simple operation, making them ideal for hard-to-reach areas like above kitchen sinks.

Bay & Bow Windows

Add dimension and space to your rooms with our bay and bow windows. Bay windows project outward in sharp angles, creating a unique nook, while bow windows form a gentle, curved appearance. Both styles flood your space with natural light and provide panoramic views.

Casement Windows

Experience the blend of functionality and energy efficiency. These windows, hinged at the sides, open outward fully, allowing for maximum ventilation. The tight seal when closed enhances energy savings, making them a smart choice for your home.

Sliding Windows

Ideal for spaces where opening room is limited, our sliding windows offer a practical solution. They open horizontally along a track, providing excellent ventilation and easy operation, all while saving space.

Double Hung Windows

Discover the classic appeal and adaptability of our double hung windows. Both the upper and lower sashes open, providing flexible ventilation options. The tilt-in feature for easy cleaning and robust locking system ensures security and efficiency.

Picture Windows

Frame the beautiful views of your surroundings with our picture windows. These large, stationary windows offer an unobstructed view, flooding your room with natural light and enhancing the overall energy efficiency of your home.

Specialty Windows

Let your creativity shine with our specialty windows. Available in a range of unique shapes and sizes, these windows allow for a distinctive architectural statement, tailored to your specific design vision.

Patio Doors in New Castle

Elevate your living space with our sophisticated range of patio doors. Featuring an array of styles, from sleek sliding doors to elegant French doors, each is customizable to reflect the unique style of your New Castle home. For inspiration or expert advice, visit our galleries or consult with our professional designers.

Sliding Glass Patio Door

Perfect for modern homes, these doors offer a sleek design that maximizes your view and living space. The smooth operation and minimalist aesthetic create a seamless blend of indoor comfort and outdoor beauty.

French Sliding Patio Door

Combine elegance with practicality with our French sliding patio doors. These doors provide the classic look of French doors with the added convenience of a sliding operation, optimizing space without sacrificing style.

French Hinged Patio Door

Introduce timeless elegance into your home with our French hinged patio doors. Adjustable hinges and customizable swing configurations allow these doors to complement the classic design of your home, adding sophistication and charm.

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Entry Doors

Renewal by Andersen offers expert installation services for ProVia entry doors, ensuring seamless integration with your home’s aesthetic and structural integrity. Our skilled team takes meticulous care during the installation process, guaranteeing precision and attention to every detail. We understand the importance of a secure and beautiful entryway, which is why we partner with ProVia. From the initial consultation to the final installation, Renewal by Andersen demonstrates our commitment to excellence, providing New Castle homeowners with an entry door solution that exceeds industry standards.

Legacy Steel

For unmatched security and weather resistance, Legacy™ Steel entry doors are the premier choice. Constructed with robust steel, these doors provide superior protection. The inclusion of thermal barrier technology and custom bottom sweeps adds an extra layer of energy efficiency, ensuring your home is secure and comfortable year-round.

Renewal by Andersen Storm Doors

Add a layer of protection for your custom front entry door with a storm door. Renewal by Andersen conducts comprehensive storm door installation, and ProVia offers durable, protective storm doors.

New Castle homeowners choose aluminum storm doors to reinforce the durability of their steel or fiberglass entry doors. ProVia storms doors are the best glass screen doors on the market. With 20% thicker aluminum walls, these doors surpass industry-standard storm doors. Customize the best height, style, glass inserts, and self-storing screens.

Learn more about our storm door installation service when you call Renewal by Andersen in Delaware today!


The people, product, and installation surpassed all my expectations. Home is noticeably quieter, cooler in the daytime, and each window has a beautiful view as compared to the old aluminum frame.

John H.

I love my new windows, made a HUGE difference in the drafts, keeping wind noise out, and keeping heat in. I also choose a different style and the view is much nicer, easier to open and close

Tonya B.

We are extremely pleased with our large dining room window. The old window was not efficient; letting cold air into the house in the winter as well letting heat from the furnace outside! The installer was very professional, efficient and cleaned everything up nicely. The entire experience from sales to installers through follow-up was a pleasure.

Seth Y.

Proudly Serving New Castle and the Surrounding Areas

Homeowners in New Castle and the surrounding Wilmington region can trust Renewal by Andersen for full-service window replacements and patio door installations. Our profound understanding of our products, coupled with sophisticated installation methods, positions us as your premier choice for home improvements. Schedule your free, in-home design consultation and take the first step towards realizing your dream home.

Renewal by Andersen Signature Fibrex® Material

Fibrex® material sets a new industry benchmark with its superior strength and durability, ensuring your windows are built to last.
The robust composition of Fibrex® material allows for slimmer window frames, enabling larger glass areas for a more expansive view.
Appreciate the convenience of Fibrex® material, which resists cracking, pitting, corrosion, and rotting, and removes the necessity for repainting.
Our windows have been rigorously tested for over two decades, affirming their enduring durability, especially in New Castle’s distinct climate.

Get in Touch with Us

Call Renewal by Andersen in Delaware to schedule your in-home consultation today. Our professionals are committed to simplifying every step of the process, so you can enjoy your new home improvement sooner than you think. Contact us to learn more about our hassle-free, 4-step process.

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