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John K Geringer Construction

Founded 1974 • With Angi since January 2016



We have a crew of 6 experienced team of skilled workers with knowledge of many different trades, we can handle any size project....

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I provide excellence and integrity in all of my work. I provide with every roof installation a detailed walk-through video of all of my work. I show my customers why Eye Witness Roofing is the best! We do not ask you to trust us, WE SHOW YOU CAN TRUST US!  

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Award 2020

We are proud to be a trusted Ally with Spire Energy of Missouri ! St Louis Insulation is a full service home maintenance , energy efficiency, insulation and soundproofing contractor that specializes in "Everything Attics, Basements, Crawl - Spaces" and various additional specialty applications ( existing residential buildings). If you dont know who to call, call us! We are a family owned and operated company that takes pride in the services that we provide and loves providing results for our customers. If you are looking for an honest and reliable contractor look no further than St. Louis Insulation! St Louis Insulation offers a unique understanding of building types, methods and construction techniques used during various periods of residential construction. St Louis Insulation provides in depth knowledge of the challenging and fluctuating weather that we face each year in the Midwest and the techniques best used to address and correct the problem while maintaining the integrity of the building. St Louis Insulation offers exceptional service , competitive pricing, and a 100% customer satisfaction guarantee. Our in depth knowledge and continual training of the latest techniques in building science maintains our edge over the competition and provides our customers with unparalleled expertise in a unique industry. St Louis Insulation offers customers common sense strategies and state of the art materials to maximize your investment while providing solid results. St Louis Insulation uses materials and techniques that are effective and commonly last 30 + years. If you're going to do it, do it once and be done! Call or Email Us today or visit and use our self scheduling tool to arrange a consultation.  

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!  

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Services Offered

We can handle any size job from small repairs and remodeling projects, all the way up to a whole new roof or a whole new house.

Services Not Offered

We do not do plumbing

General Information
Free Estimates
Payment Options
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Senior Discount
Emergency Service