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Winter Sale

Get a free estimate today!

Now for a limited time

Buy 2 Windows Get 2 Windows with special financing

Take advantage of our Winter Sale with incredible savings across your next home project! Buy 2 windows and get 2 free (product only) with special financing available, including 0% interest and no payments for a limited time. Enjoy:

  • 40% off all siding projects
  • 30% off all roofing projects

Disclaimer: Windows are product only and does not include installation. Siding and roofing offers excludes any insurance work. Offer applies to roofing, siding, and windows only. Promotion ends 3/3/26. Cannot be combined with other promotional offers.

Energy-efficient siding technology
St. Louis home siding services
Weather-resistant siding for homes
Customizable house siding designs
High-performance windows
Modern entry door designs

Features & Benefits

Dalco is committed to enhancing curb appeal, increasing energy efficiency, and elevating your quality of life.

Where Quality Meets Confidence

Why Choose Dalco?

Doing the job right, listening to the customer, and offering a fair price and service after the sale is the formula for our success for over 45 years. Over 60% of Dalco’s business comes from repeat customers and referrals. As in the case of Donnie, many of our customers are remodeling their second and even third homes with us. We ask you to give us a chance to earn your business.

Experience You Can Trust

Dalco's decades-long experience in installing thousands of windows ensures unmatched expertise. This guarantees exceptional quality and service for every customer.

Energy Efficiency

Utilizing Cardinal Low E & Argon technology, our windows block sunlight, preventing valuable carpets and furniture from fading. Our insulated windows also reduce heat transfer, lowering your bills year-round.

Quality, Colors, and Styles

With Dalco, you can trust that your home is protected by top-of-the-line materials that not only look great but also offer superior performance and durability. Choose from our selection of options to find the perfect fit for your home’s aesthetic and budget.

Custom-Built Excellence

 Choose from unlimited paint finishes to find the perfect color to complement your home's exterior.

Beauty and Curb Appeal

Whether you're looking to refresh the look of your home or completely overhaul its exterior, our expert team will work with you to select the perfect options that complements your style and enhances your home's aesthetic appeal.

Experts In Installation

As a preferred installer, we ensure that your products are installed to the highest standards, providing you with peace of mind and confidence in your investment.

Protect Your Investment

Your home is one of your most significant investments, and the item that make up a home play a crucial role in protecting it. Don't underestimate the importance of durable and reliable doors, windows, roofing, and siding.

Dream Big, Plan Smart

Estimate Your Dream Project

Free Estimate

BBB Posted Reviews

I recently had all of my windows replaced by Dalco and I couldn’t be happier. I had several bids from other companies and I found their pricing to be comparable to the others with the quality of the windows being very high. I went into the process just thinking I would be replacing my windows with the exact same style. However my salesman, ***** provided some options for different layouts that really were a huge improvement. The crew installed everything in one day as promised and were very conscientious in how they worked and in the cleanup. Overall it was all a great experience and I am enjoying the efficiency of my new windows.

Jeffrey

Submitted 04/03/2018

In December 2001 we hired Dalco to install siding and windows at our house. The professionalism of the salesman along with the expertise of the installers made this major project a pleasant experience. I fully expected that at some point I would have to battle for satisfaction however to my surprise that was not the case. Not only was the job completed to our satisfaction, the product has held up for 16 years. I recently found one of the windows had a piece of weather strip that had come loose. I called Dalco and they sent someone out to assess the situation and ultimately replace the weather strip at no cost. WOW that’s service and money well spent!

Patricia28

Submitted 02/07/2018

We are very happy with the products and installation completed by DALCO. We appreciate all of the professional and personal guidance you gave us in making our home look great. Your guidance was very much appreciated.

Roger

Submitted 01/31/2018