Underfloor – Overview

It’s time to install the following underfloor systems:

• Window weep tubes (optional)
• HVAC ducts
• Shower / sink waste pipe
• Toilet waste pipe and vent
• Hose bib (optional)
• Water and data conduit
• Electrical conduit
• Utility closet drain
• Thermostat conduit

Most of these are simple floor penetrations that go straight through, as the utility stub-outs are already in the ideal location.

The shower/sink waste pipe will need to travel within the floor itself to ensure the p-trap is within the conditioned space and protected from freezing.

Window weep tubes are a precaution for potential future window leaks. Direct-set windows with filled corners or monolithic frames are least likely to leak.

The hose bib is optional but ideal for a future outdoor shower.

Expect to spend ~2 weeks doing the work outlined in this chapter.