Stop 3 of 5 on the walk

Under the house: crawlspace, slab and old pipes

Under the house is the part of a Midlands walk you mostly do from the hatch, with a flashlight, and on a slab from the outside wall. The stops here show what you can see from there: damp, bare pipes and old materials¹^,2.

Updated November 4, 2026, Midlands House Walk

Open panel looking into a low space with dirt ground and pipes along the joists — A crawlspace seen through an open access panel: bare dirt, a white plastic drain with a tee, and wires and pipes along the joists.

Many older houses sit on piers or block with a low space beneath them. Others sit on a slab with nothing to look into. Walk the outside first: vents or a hatch mean a crawlspace, and a bare concrete edge means the slab stop.

You don’t need to crawl for any of this. Start at the hatch, then look at why it stays damp. EPA’s main points are plastic over the dirt, good ventilation, and fixing leaks and seepage². Clemson wants both hot and cold lines insulated before winter¹, which wrapping the pipes covers.

Old materials get their own stops: gray plastic pipe and old galvanized pipe. If there’s standing water or a sewage smell down there, skip the rest and go to water or sewage under the house.