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    C & M Waterproofing

    5.0 (1 review)
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    Keller Waterproofing did great job sealing my foundation in Dec. This week they returned to the…read more necessary update and complete the job. They show great attention to detail. I would recommend them highly.

    After meeting with three different basement waterproofing companies to compare plans and pricing,…read morewe ultimately chose Keller Waterproofing. While they were the most expensive option, they worked with us on the price, and their proposal was by far the most comprehensive--clearly reflecting the value behind the cost. Keller was the only company to address not just the interior drainage system and sump pump, but also the exterior downspouts and full-house drainage. They also recommended installing a vapor barrier from floor to ceiling, which no other company suggested. This thoughtful addition was aimed at eliminating odors and helping redirect water from any future cracking--an extra layer of protection we appreciated. Their warranty is advertised as a "lifetime" warranty, though it's technically a 15-year transferable warranty. Still, it's reassuring to know it can be passed along to future homeowners. Once the project began, they uncovered an unexpected issue with our foundation (not surprising given the quirks of our house). The remediation added a significant cost, but after discussing our financial situation, Keller generously reduced the additional charge by nearly 40%. Impressively, even with the added work, they finished the project three days ahead of schedule. Throughout the process, their team was professional and respectful of our space--covering all belongings to protect them from concrete dust. They even went above and beyond by repairing our front sidewalk after running drainage underneath it, leaving it in better condition than when they arrived. As for performance, we haven't had enough rain to truly test the system yet (and hopefully won't anytime soon), but based on garden hose testing, the sump and drainage systems are functioning as designed. The basement already feels noticeably less damp and musty.

    Rescon Basement Solutions - Duct tape coming off after they came to fix the moisture barrier

    Rescon Basement Solutions

    (19 reviews)

    Rescon never called me back on 11/4/24 as they promised to look into what the heck is happening…read morewith my service or lack thereof. So I used my lunch break to call them back again. They redid the moisture barrier and left it in a unworkmanlike manner. They refused to come back and fix it. Why? They cancelled a job for which I paid a down payment without letting me know. Why? I was told we don't work on things we didn't install. Poppycock. Why give the estimate in the first place? And they HAVE worked on the bulkhead before, which they did NOT install! I called to ask why my work was cancelled and why they never came back to finish the job. I asked proactively if they were cancelling my sub pump maintenance appointment for next year, which they did, and never told me. They said they will no longer do business with me and nothing more. After I paid them %1,000s, being a customer since 2019. They installed 2 dehumidifiers, sub pump, back up battery, bulkhead moisture barrier and basement wall moisture barrier. John from the Hooksett office gave me a quote for work, see my earlier review, which they later took back. Huh? What the heck is going on with this company? They just keep repeating we don't do business with you anymore. If this is how they treat loyal customers, I wouldn't use them. Would you?

    RESCON came for the annual maintenance of my sump pumps (regular and backup). Mike P. was the…read moretechnician and he was great! He did the job and alerted me to the fact that there was something that should be repaired and also mentioned that the original sump pump which was something like 15 years old was in need of replacement at some point sooner than later. I don't like surprises so I asked Mike to get everything in order, including the new sump pump. He did what was needed. There was never any pressure to buy anything. He took the time to do the job well and I am appreciative of that.

    C & M Waterproofing - waterproofing - Updated September 2026

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