I live in a 110-year-old house in Southern California with a narrow walk-out basement. Only one side of the basement is below grade, and the walls are made of 16-18 inch thick poured concrete. I've noticed a small area of efflorescence near the bottom of the wall, which has caused some of the outer layer to flake off and reveal the aggregate behind it, resembling small river rocks. This issue seems to have been around for decades, but since it's in a utility room that I rarely check, I didn't notice it until recently. I cleaned up the area about 3-4 years ago, and there's only a tiny amount of dust now, suggesting it's not getting any worse quickly. The wall is backed by dirt and clay soil, with a brick walkway above that only gets wet during rare rainy days. However, my neighbor irrigates their lawn every few days, and I'm wondering if that could be causing moisture to reach my wall. Should I be worried about this, and what can I do to fix it?
2 Answers
Yeah, it sounds like your neighbors' irrigation could be playing a part, but if there’s no visible runoff hitting your wall, it might not be the main issue. Since it’s only at the bottom of the wall, it’s possible groundwater could be the culprit too. It’s great you rarely access that area, but if you want to be proactive, consider sealing that part of your wall to keep moisture from getting through. Checking the drainage around your home could also be helpful!
Honestly, living in SoCal where it's typically dry, you might not need to panic too much. The efflorescence could likely be due to your neighbor's sprinklers. I’d suggest creating a barrier, like adding some decorative metal or shrubs, to redirect any water away from your brick wall. It's definitely worth talking to your neighbor about their sprinkling habits since they might be able to adjust their setup to help you out. You really don’t want any water getting too close to your foundation!
That makes sense! Talking to them could lead to a simple fix without much hassle. Plus, it’s smart to keep an eye on any water sources near your house.
Good idea on sealing! That might really help. And looking at drainage is definitely off the beaten path but so important!