Connecticut’s Best

Window Installation Service

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Experience Mainville Windows & Doors

Mainville Windows and Doors specializes in both residential and commercial window replacement, door replacement and installation services. We sell and install vinyl windows, aluminum windows and fiberglass windows. We are experienced installers of the best windows on the market today including Andersen, Marvin, Pella, and Harvey. In addition to that we sell and install sliding glass patio doors, entry doors, storm doors and security doors. As a Connecticut window and door company, servicing CT, we pride ourselves on the long-lasting installation of quality products that will change your day to day life while adding curb appeal and value to your home and property.

Reputation for Excellence

Our team of experts knows that windows and doors play a critical role in the overall look, feel, and function of your home. We use only the best materials ensuring a durable, energy-efficient, and aesthetically pleasing result. With over 40 years of experience in the industry, you can trust our team of experts to exceed your expectations and enhance your home’s value and comfort.

Expert Installers

Our expert installers are knowledgeable in all window and door types, work efficiently and respectfully to minimize disruptions, and ensure every installation is perfect. Trust us for optimal energy efficiency and a home left in pristine condition.

A Few of Our 5-Star Customer Ratings

Beautiful Windows to Add Light and Value

Add beauty, natural light, energy efficiency, and value to your home with our range of durable and stylish windows. Our experts will guide you to choose the right windows from our selection of modern to traditional styles, materials, and sizes.

Sliding Glass Patio Doors to Connect to Your Outdoor Living Space

We have a range of stylish sliding glass patio doors to suit your needs. Bring the outside in, connect your living space with your outdoor oasis, and enjoy natural light and stunning views. Browse different styles and sizes for a perfect fit.

Entry Doors to Create Welcoming Curb Appeal

Enhance your home’s curb appeal with our selection of entry doors, available in various styles, materials, and colors. Available in various styles, materials, and colors, our high-quality doors provide security, energy efficiency, and durability, while creating a warm and welcoming atmosphere for your guests. Trust us to enhance your home’s entrance with premium entry doors.

Storm Doors to Let the Light and Keep the Weather Out

Keep the elements at bay and let natural light flow into your home with our storm doors. Our selection includes durable and energy-efficient options that offer both protection and illumination. Count on us to provide you with storm doors that keep your home safe, comfortable, and stylish.