How-To
Step-by-step plumbing guides: how to fix, install, unclog, and maintain the plumbing in your home, and when a job calls for a licensed plumber.

How to Install a Kitchen Sink (Drop-In and Undermount)
Sink installation guide: tools, drop-in vs undermount mounting, drain and supply hookup, plumber's putty vs silicone, cure times,…

How a Toilet Works (with a Toilet Plumbing Diagram)
A toilet plumbing diagram, explained: every tank and bowl part, what each one does, what goes wrong, and…

Plumbing Vent Diagram: Types, Sizing, and How Venting Works
A plumbing vent diagram, explained: how venting works, every vent type, real trap-arm distances, vent sizes, and when…

Kitchen Sink Plumbing: How the Under-Sink Assembly Connects
Kitchen sink plumbing explained: how the tailpiece, P-trap, trap arm, disposal, and dishwasher line connect under the sink,…

Bathroom Plumbing Rough-In: Dimensions, Pipe Sizes, and Layout
Bathroom plumbing rough-in dimensions, pipe sizes, and fixture spacing in one table, plus the install order and code…

Toilet Leaking at the Base? Diagnose It by Cause
Toilet leaking at the base? Rule out condensation first, then find the cause: loose bolts, failed wax ring,…

Outdoor Faucet Leaking? How to Fix a Hose Bib by Where It Leaks
Outdoor faucet leaking? Diagnose it by where it drips (handle, spout, or vacuum breaker), fix a hose bib…

How to Unclog a Shower Drain
Unclog a shower drain fast: pull the hair clog by hand or hair tool, flush, snake, or clean…

How to Shut Off Water to Your House (Main and Fixtures)
Find your main water shutoff valve by home type, tell a gate from a ball valve, and shut…

How to Replace a Kitchen Faucet
Replace a kitchen faucet in about an hour: shut off water, loosen mounting nuts with a basin wrench,…