Serving St. Louis, MO and Surrounding Area
Contact our St. Louis location for your next sunroom, screen room or porch enclosure project or simply fill out our online form to schedule your free in-home design consultation. A design consultant will provide you with ideas, help make recommendations and quote you an accurate price for your specific project. We proudly serve St. Louis, MO and surrounding counties including Clinton County to Warren County and Jersey County to Jefferson County, and everything in between.
Great Day Improvements
Location coming soon!
Toll free: 800-230-8301
For Service or Warranty
Hours of Operation
Greater St. Louis Location Overview
Great Day Improvements specializes in custom sunrooms, screen rooms, solariums and porch enclosures. Whether you are looking to enclose an existing patio, porch or deck, or add on a brand new space, our team of experienced professionals can help!
Our staff has over 100 years of combined of combined experience and knowledge in the sunroom design and installation providing superior service to homeowners like you. Let one of our experienced design consultants help you with your project. Our in-home estimate is free and non-obligatory. Trust your project to Great Day Improvements.
Certifications & Associations
- Qualified Remodeler’s Top 500 of 2021 (#11)
- Remodeling 550 of 2020 (#10)
- Qualified Remodeler’s Top 500 of 2020 (#18)
- HIP 200 of 2020 (#16)
- Remodeling 550 of 2019 (#14)
- Qualified Remodeler’s Top 500 of 2019 (#21)
- HIP 200 of 2019 (#18)
- EPA Lead-Safe Certified Firm
- Licensed, Bonded, Insured
Products & Services
Great Day Improvements is proud to exclusively manufacture great brands like Patio Enclosures sunrooms, screen rooms and solariums as well as Stanek Windows and patio doors.
But we're so much more than just a manufacturer. We custom design, make and install our products to improve not only your home, but your life as well. Trust Great Day Improvements for your next window, door or enclosure project.
Expand your living space with one of the products in the Patio Enclosures line. Protect yourself from the elements while taking full advantage of the outdoor views.
Increase the energy efficiency of your home and reduce energy bills with the highest quality replacement windows and doors.
Improve and expand your outdoor space. Add shade, beauty and practical solutions that enhance the beauty of your backyard.
Specials & Financing
Great Day Improvements is dedicated to providing our customers with affordable products and services. Our offers and specials vary throughout the year, so be sure to check back often!
Local Project Photos
A photograph is worth a thousand words! Check out some of our local projects in your area. Or view hundreds of gorgeous photos from our main photo gallery.