PROFILE: Cornerstone Home Improvement is a family owned, local company, three generations strong, serving Kansas City (and the surrounding Missouri and Kansas areas) for over 35 years. At Cornerstone, it's not just about the product, nor is it just about the installation. We believe it's about the entire home renovation process— uncompromising quality products, expert installation, dedicated personal service, knowledgeable and respected people, solid warranties, affordable and reasonable pricing, and above all...TRUST.