10/07/2026
With the basement walls protected from constantly damp soil, it’s time to move on to drainage. Water that could make its way to the bottom of the basement wall needs to be relieved and carried away from the “cold joint” between the concrete footing and wall pours. From there, it can either be drained to daylight or collected and pumped out. I believe it’s important to use rigid piping here because of its ability to resist crushing. On this build, we used SDR35 PVC with holes drilled in it. Filter fabric and plenty of crushed stone are used around the pipe to keep out debris.