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Founded 2010 • With Angi since July 2011


(2) Verified Reviews


Claim Specialists, Free and Fair Storm Damage Inspections, Lifetime Warranty on Roof Replacement, Seamless Gutters and Gutter Covers...

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Cornerstone Home Improvement has earned the reputation of being trustworthy, honest and fair to its customers. A local, family owned business-three generations strong serving the Kansas City area for over 38 years, Cornerstone is a proud member of the Better Business Bureau and NARI. We understand that our business is dependent upon our customers. Therefore, our number one goal at Cornerstone is to provide each customer with uncompromising quality products and dedicated personal service. In fact, over 60% of our business is from a repeat satisfied customer or referral almost unheard of in this industry. You receive a premium product at an affordable price and you pay nothing until all work is completed and you are completely satisfied. Most all of the products we carry come with a life time, transferable manufacturer’s warranty. In addition, we are one of the very few home improvement companies that actually give a separate written lifetime installation warranty. Also serving Stilwell, Parkville, Shawnee, Mission, Stanley, Plaza, Prairie Village, Leawood, Brookside, Waldo & Raytown, Mo.  

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There’s never been a better time to transform you home with Champion of Kansas City! Think of us as a one-stop shop for everything you need to beautify your home’s exterior: windows, sunrooms, siding, roofing and doors. Only Champion offers the superior energy efficiency of Comfort 365 Windows, industry-leading limited lifetime guarantee, and award winning products made in the USA. For over 60 years, Champion has been manufacturing and installing quality windows, doors and sunrooms while creating a seamless experience for our customers. More than 9 out of 10 customers recommend Champion. Not only do Champion products enhance your curb appeal, but can also lower your energy bills, improve the comfort level of your home and reward you with a high return on your investment. Experience the difference Champion products can make for your home today! ENERGY STAR®, NSA, AAMA, Installation Experts, VSI, BBB, NFRC  

Our company offers a UNIQUE service of window replacement, glass replacement, repair rotten windows and doors and other window accessories. We specialize in replacing the old, damaged wood with new high-quality wood and PVC, custom made to accommodate each window style, thus delivering a brand new look to a window! As well we are CERTIFIED WINDOW INSTALLERS. We replace all types of glass, in windows, patio doors and skylights. Also we do defogging when there is moisture in glass units.Caulking services. Window mechanisms replacement and all types of window repair. If other companies will only your replace your foggy glass, with the moisture inside..... We will not only replace it, we will find and fix the reason why it gets foggy... So it will never happen again! With over 7 years of experience under our belt, we are your first choice for excellent customer satisfaction. We are locally owned and operated, and our professionals are always prompt, clean, and friendly every step of the way. Call us today 816-760-2089 for a free estimate!  

Verified Reviews

A few reviews for this pro...


I just had a new roof put on our house yesterday by Triad Roofing. We had significant hail damage from some of the spring storms last year. I was impressed with the clear and timely communication and friendliness of our sales rep, John Tracy. He made the process simple and stress-free. He even met with the insurance adjuster. 2020 has been stressful but at least getting our new roof was not. It wa...

Description of Work
Branson Mo

Category gutter repair,roofing,replacement windows




Description of Work
We rated Triad as a D, this company was hired for installation of a new roof, replacement of damaged gutters, and replacement of damaged siding. Triad hired subcontractors from the area. The crew hired for the roof and gutters did a nice job on our home. The crew hired for the siding was just the beginning of our nightmare! The day the crew was to begin tear down on our home two men showed up, I went out to visit with the one in charge and asked is it only you two? He said, "" yes, the others had too much to drink last night"" laughing. He then went to sit in his truck while the one guy starting tearing off the siding. The next morning we had 20-30 mile per hour wind, no crew showed up and we had siding and styrofoam flying through the neighborhood! They had a full trailer with a tarp not fulling covering the debris, they left siding, styrofoam laying all over the yard! It took us two hours to clean the area! The full crew then showed up in the next couple of days, they began applying the new siding not applying styrofoam with installation! I checked your website to see how siding was to be properly installed then we approached the head of the crew. He agreed maybe the should apply styrofoam! We contacted Triad with our concerns, they felt we should continue to talk to the man in charge. We came home each night to the continued nightmare, tools, debris, siding all over the yard! The siding looked terrible, then another crew member misunderstood direction and began tearing off siding from the part of the home that did not have hail damage, he botched the siding on the front of house while denting the new gutters also! We contacted Triad now sending many pictures of the botched work! They finally sent two new subcontractors to review the terrible work done and try to figure how they were going to fix it! The next subcontractor did a great job repairing and replacing the siding on the two sides if our damage done! We still have the front of the home that was botched and Triad sent an invoice but, will not return any email responses pertaining to the front of the home! The last email I sent, I let them know I could be available for their insurance adjuster so they would be able to file a claim with their general liability insurance! I would not recommend this company at this time!

Category gutter repair

    Services Offered

    Roofing, Windows, Siding & Guttering.

    Services Not Offered

    We can service any of your home repair needs.

    General Information
    Free Estimates
    Payment Options
    Check, Visa, MasterCard, Financing Available, Discover, PayPal
    Senior Discount
    Emergency Service