G.M.D. Construction inc.

Apr 2024

GMB Construction did an awesome job - took my house from a 9 Ci/L all the way down to outside levels (0.4pCi/L). The team also went above and beyond by replacing my sump pump lid assembly and sealing various cracks in the cement. Highly recommend!

Mar 2024

G.M.D is a small family owned business. They did an excellent job installing an active radon system in our house. Part of their job included an independent radon test after the installation to verify the system was working. I highly recommend them.

Mar 2024

Edit. We use Airthings sensors to monitor our home air quality and our radon levels have been almost always below 1 since they installed our system. Our home is safe now.I’m not surprised these guys got so many 5 star reviews. We talked to them twice, 6 months apart and monitored our home’s radon levels in that time. The room just over the location where the sewer line goes out to the septic is where we found the greatest concentrations of radon hitting a high of 40 during our monitoring. We mitigated by keeping all the windows and a sliding door open. Daily rates were usually above 5 or 6. Then they came in and installed the system 3 months ago. Our home has been...read full review