Providing customized solutions for door and window replacements for your Northern California home or business.

Our team of experts is here to walk you through every step of the way to ensure cost-effective replacements and streamlined service.

We guarantee customer satisfaction in all our products, and through your window and door installation process.

Who we are

YOUR LOCAL WindowS & DOORS replacement company in Lathrop, CA

Window replacement in Lathrop can be an overwhelming task. But it doesn’t have to be.

What we offer
Types of product

Different Types of Windows and doors for Your Home in Lathrop, CA

At Green Technology Windows and Doors in Lathrop, our expert team is on board to take you from start to finish, from proposal to installation to completion, and we’re dedicated to providing you with top-notch windows replacement and retrofit installation. We’re here to assist you with any questions you might have, whether you want single or double hung windows, and if you’re interested in Low-E, dual or triple pane glass.




We understand that shopping online for window replacement and vinyl retrofit options is a tempting offer, but the team at our Lathrop location knows the ins and outs of the climate in the East Bay, which gives them a sharp insight on the most effective window options for your home or business. Before your consultation, find the windows you’re looking to replace and measure them. If your windows are older, check them for signs of rot or air leaks, and if your windows are single-paned and are lined with older vinyl casings, window replacement is the best option for your home or business. It’s also a good idea to measure the amount of sun that seeps into your home from the window glass and keep that in consideration when working with our Lathrop specialists and mapping out your budget for installation.


Green Technology Windows and Doors has been the best window and door replacement company serving Lathrop, CA for more than 10 years. Our team of craftsmen are experienced in using retrofit installation or new construction to ensure your new vinyl windows and patio doors are built and fit to perfection, and we work a number of premier brands, including Milgard Windows & Doors, Ply Gem, and Simonton Windows. We offer the best prices for our patio doors and replacement windows, and we offer a wide variety of styles and colors to choose from.

• Milgard Windows & Doors
Tuscany Series, Trinsic Series or Style Line and more.

• Simonton Windows Windows & Doors
Asure Series, Reflection Series, Madiera or DaylightMax Series and more.

• Ply Gem Windows Windows & Doors
Premium and Pro Series, 2000 Series, 5100 Series and more

From selection to installation, our talented and trustworthy team at Green Technology Windows and Doors will walk you through every step of your venture into windows replacement and outline the long-term benefits of each window type. Our reputable professionals know the ins and outs of the climates in Lathrop, CA, and can assure you a more personalized and trustworthy experience. You won’t find a better choice for window replacement, so schedule a complimentary consultation with us and we’ll get the ball rolling! There’s no better time to consider windows replacement than now! Give us a call or fill out our online form to schedule your free in-home estimate to get started with your replacement windows and doors.