Cornerstone Home Improvements - Window and Door Installation services in Kansas City

Window and Door Installation

Cornerstone Home Improvements

At Cornerstone, We’re in Your Corner

4.8 (142)

Our Story

Cornerstone Home Improvements is a family-owned business since 1970, specializing in windows, doors, and siding for home improvement. They educate customers with unbiased opinions on various brands to help choose the best products for home and budget, avoiding marketing ploys like low-price specials. Their windows feature Super Spacer® technology for superior energy efficiency, reducing heating and cooling costs. They provide professional installations by experienced crews and offer a lifetime warranty on products and installation.

Our Specialties

Window InstallationDoor InstallationSiding Installation

Services

What we bring to every project

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Service Area

Based in Kansas City, MO

Serves within 30 minutes drive from Kansas City

Client Reviews

4.8 from 142 reviews on Google

Everyone at Cornerstone was a pleasure to work with. Dennis was patient as he answered all my questions through the decision-making process. The installers took great care as they removed the 30+ year old windows and replaced them with new ones. The cleanup was amazing as you would never had known they were there except by looking at the beautiful new windows. The office staff was friendly and went above and beyond with the way they handled things. I will be using them again and highly recommend them for a local, family-owned business who takes pride in their work, are reliable and care about the customer. I was highly impressed with the whole experience. Thank you Cornerstone for a job well done!

Sally McDaniel 2 months ago

The crew was so great to work with and they did a wonderful job installing our windows. Each installer introduced himself and assisted us with our blinds during window installation which we so appreciated. Love our new windows and highly recommend them. We will definitely use them for future projects.

Sheryl Ford 2 months ago

We moved into our house last year. The basement French doors had gaps so big you could see outside. With the winters here, the space was unusable. We knew we needed to replace them before another winter. I reviewed multiple companies and decided on Cornerstone. The process from sale to install was easy, professional and quick. The installers took their time to ensure the fit was perfect. These doors are beautiful and now my basement is one of the warmest parts of the house. I will definitely be using them again!

Melissa Picard 5 months ago
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Common Questions

Cornerstone Home Improvements serves Kansas City, MO, and surrounding areas for professional window, door, and siding installations. Our local expertise ensures we understand the specific climate needs, such as energy-efficient glazing to handle Midwest weather variations. Contact us at 816-737-0601 or 913-244-6046 for a free estimate tailored to your location.
As a family-owned business since 1970, Cornerstone Home Improvements has over 50 years of experience in window, door, and siding installations in the Kansas City area. Our long-standing presence allows us to offer unbiased advice on brands and products, helping homeowners avoid common pitfalls like the 'win"duh" factor' in low-ball marketing. We prioritize education to ensure informed decisions for lasting home improvements.
Our windows feature Super Spacer® technology, a 100% polymer foam, no-metal warm edge spacer that blocks heat escape and reduces condensation, contributing to up to 25% less heating and cooling loss. This superior insulating glass unit outperforms traditional metal spacers, saving on energy bills in Kansas City's variable climate. We only source windows with this technology when offered by manufacturers to maximize your investment.
We specialize in entry doors, storm doors, and vinyl sliding doors from trusted brands like Provia, ensuring high-quality materials with excellent security and aesthetic options. Our installations include professional fitting to industry standards, enhancing your home's curb appeal and functionality. Homeowners appreciate our variety of styles, colors, and materials to match Kansas City architectural preferences.
Our process begins with a free estimate where we assess your home's needs and recommend premium siding options like Alside or Colscapes for durability in Kansas City's weather. Our experienced crews, many with over 10-20 years on our team, handle the full installation to AAMA industry standards, minimizing disruption and ensuring a seamless finish. We stand behind every project with our lifetime warranty on both products and workmanship.
Cornerstone offers a lifetime warranty on our premium windows, doors, and siding products, as well as our installations, backed by manufacturer guarantees and our commitment to quality materials. This coverage protects against defects and performance issues, providing peace of mind for Kansas City homeowners investing in energy-efficient upgrades. Our trained installers ensure every job meets rigorous standards to honor this warranty.
We educate customers on multiple brands and options without pushing a single product, avoiding the 'win"duh" factor' of biased sales tactics common in the industry. Through our free quotes and blog resources, we cover factors like style, color, material, and energy savings tailored to local needs. This informed approach helps you compare insulating glass packages and spacers for the best value on your home improvement investment.

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Kansas City, MO

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