I get the waterproofing concerns, but honestly, sometimes sealing old stone walls can cause more headaches than it solves. Our historic home had similar issues, and when we sealed everything tight, moisture got trapped behind the barrier and caused mold problems instead. Ended up having to install a proper drainage system outside to redirect water away from the foundation. Not saying sealing isn't helpful, just that it's not always the best first step...especially with older homes that need to breathe a bit.
Totally agree with you on this. I've flipped a few older homes, and sealing stone walls can definitely backfire if you're not careful. Had one project where we sealed everything up tight, thinking we were doing the right thing...ended up with moisture trapped inside and a moldy mess. Learned the hard way that drainage and airflow are usually the smarter first steps. Glad you figured it out before things got worse—sounds like you're on the right track now.
Had a similar experience with a client's basement reno a couple years back:
- Client insisted on sealing the stone foundation walls to prevent water seepage.
- Within months, moisture started building up behind the sealant layer—walls felt damp, air smelled musty.
- Ended up removing the sealant and installing proper drainage channels plus a dehumidifier.
- Lesson learned: sometimes letting walls "breathe" is more effective than sealing them tight.
Glad your storm shelter passed inspection...sounds like you've got the right balance figured out.
Had something similar happen when we first moved into our place. We sealed up everything super tight thinking it would keep moisture out... ended up with a weird musty smell and damp patches. Learned the hard way that airflow matters more than sealing every crack. Glad yours worked out better!
"Learned the hard way that airflow matters more than sealing every crack."
This is so true and something I often have to remind clients about. When I first renovated my own basement, I was determined to make it completely airtight, thinking it would keep out moisture and pests. But after a few weeks, I noticed the same musty smell you mentioned and even spotted some mold forming in corners. It was a bit frustrating after all that effort.
After consulting with a contractor friend, I realized the importance of proper ventilation and airflow. We installed some discreet vents and a small dehumidifier, and within days the air felt fresher and the mold disappeared completely. It's amazing how much difference just a little airflow can make.
Glad your storm shelter passed inspection smoothly—it's always reassuring when these things turn out well.
