Quality Waterproofing + Insulation

4.9
380 reviews from Google

Water intrusion and poor insulation lead to costly damage and unhealthy living conditions. Quality Waterproofing + Insulation specializes in foundation repair, waterproofing, and insulation for St. Louis homeowners so your home stays dry, efficient, and worry-free for years to come.

Call us! +1 314-455-7434
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Customer's reviews

Quality Waterproofing was nothing short of amazing from our experience, and they did not even have to do work for us as we discovered it was a plumbing issue rather than a foundation issue. But before we discovered the root cause of water in the basement, Matt delivered a dehumidifier and an air moving fan to dry out our basement. The next day, while the plumbers were working on a cracked stack, Eric called and came to our home anyway just to look around and make sure there were no other obvious issues. He did not have to come by since the plumbers were here, but he did so anyway. I would recommend this company without hesitation and I feel oddly guilty that we did not need to employ them for our project. I assure you that if we ever do have a basement issue, we won't call any other company. ~ Jim H
Eric Wulff’s honest assessment of my basement leak was awesome! He saved me potentially thousands of dollars of unnecessary foundation work. I was contemplating spending hundreds or even thousands of dollars and the irony would have been that the “drip” would have still resulted in water in my basement. Eric’s holistic evaluation/approach revealed that an old copper pipe was leaking from ceiling, NOT an issue with my foundation. Two other companies came in and suggested significant repairs, one of which would have even caused me to tear up a recently refinished bathroom. It is so refreshing and appreciated that this company is here for the customer, not just about the companies bottom line! I can assure you that I’ll be referring Eric and Quality Waterproofing any chance I get! ~ Katie H
We got 4 bids for waterproofing our basement after the sump pump couldn’t keep up with the high table water and the basement mildly flooded. Eric visited us in a timely manner to offer a quote. He is very friendly, extremely knowledgeable, and gave us a great education about what was going on. One company we contacted for a bid did not even bother to return one after their visit! Others tried to do more work than what was needed. Although we have some downspout issues to take care of and needed a new sump pump before proceeding, Eric offered a quote that was specific to our needs. He also provided great follow up to see how things were going! If we need to proceed with the work, we will definitely use Quality Waterproofing! I highly recommend their services. ~ Jacqueline J
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Blog

Most basement waterproofing decisions go wrong before anyone picks up the phone. The mistake is treating every wet basement the same way. Hydrostati… Posted on: August 14, 2026
Fall is harder on St. Louis foundations than summer — wet or dry. After a dry summer, clay soil pulls away from foundation walls and rehydrates fast… Posted on: August 6, 2026
Most St. Louis homeowners think about insulation in January. That's too late. Spray foam requires ambient temperatures above 50°F to cure correctly.… Posted on: July 28, 2026
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Contact information

Phone +1 314-455-7434
Address
200 S Elam Ave UNIT 200 Valley Park 63088
Sunday Closed
Monday 8:00 AM - 5:00 PM
Tuesday 8:00 AM - 5:00 PM
Wednesday 8:00 AM - 5:00 PM
Thursday 8:00 AM - 5:00 PM
Friday 8:00 AM - 5:00 PM
Saturday Closed

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