Water seeping through stained concrete in slab foundation - during heavy rain only
You may want to take a look at your roof vents (stacks). There's a plastic boot around the vent that cracks over time. Rain water can leak through &amp; travel down the pipe to the slab. If this seems likely, there's something called a Perma-boot (Home Depot, Lowes, etc.) that you can install yourself. It fits over the existing roof vent boot. Good luck!