How-To & Care · Installation
How to Install a Bathroom Faucet: Single-Hole and Widespread, Step by Step
Swapping a bathroom faucet is one of the most satisfying weekend jobs in the house — here is the whole thing, from the shutoff valve to the final leak check.
The short answer
Installing a single-hole bathroom faucet takes most people about 45 to 60 minutes with basic hand tools. Shut off the water, disconnect and lift out the old faucet, seat the new one on its gasket, connect the hot and cold supply lines, then flush the aerator and check every joint for leaks. A widespread (3-hole) faucet follows the same logic with a few more connections underneath. If your shutoff valves are corroded, seized, or missing, stop and call a plumber.
How long does installing a bathroom faucet take?
Less time than you would guess. A like-for-like swap — new faucet into the holes the old one already used — is a genuine beginner project: no soldering, no cutting, and nothing a shutoff valve will not save you from. The clock mostly comes down to how stubborn the old mounting nuts are. Budget an hour, keep a towel handy, and you will likely finish early.
| Detail | At a glance |
|---|---|
| Time | 45–60 min (single-hole); 60–90 min (widespread) |
| Skill level | Beginner-friendly — no soldering, no cutting |
| Cost, DIY | Just the faucet — from about $115 for a VIGO single-hole |
| Best for | Like-for-like swaps into existing deck holes |
| Call a pro if | Valves are seized, leaking, or absent |
What will you need before you start?
Almost everything here lives in a standard toolbox. Lay it all out before you shut the water off so you are not hunting for a wrench with a puddle forming.
- An adjustable (basin) wrench — the long reach makes the nuts behind the sink far easier.
- A regular adjustable wrench for the supply-line nuts.
- A bucket and old towels — the trapped water in the old lines has to go somewhere.
- Plumber's tape (PTFE thread tape) for the threaded supply connections.
- A flashlight or headlamp — the back of a vanity is a dark place.
- Silicone caulk or plumber's putty, only if your faucet does not include a base gasket. Most VIGO faucets do.
- Your new faucet and its supply lines. Check the box: many kits include the lines, the gasket, and the mounting hardware.
How do you install a single-hole faucet, step by step?
This is the whole job. Work in order, hand-tighten first, and reserve the wrench for the final snug — overtightening is the single most common way people crack a fitting.
Turn off the water and relieve the pressure
Close both shutoff valves under the sink — the small oval or football-shaped handles on the hot and cold lines. Turn them clockwise until they stop. Then open the old faucet all the way to drain the trapped water and release pressure. No shutoffs down there? Close the main valve for the house instead.
Disconnect and remove the old faucet
Slide your bucket underneath. Loosen the supply-line nuts where they meet the valves and let the last of the water drain. Then reach up behind the basin and back off the mounting nuts holding the faucet down. Lift the old faucet out from above and set it aside.
Clean and inspect the deck
Scrape away any old putty, gasket residue, or mineral crust around the mounting hole until the surface is smooth and dry. Give the shutoff valves a look while you are here — if they weep or will not turn freely, this is the moment to replace them or call a plumber.
Set the gasket and drop in the new faucet
Seat the rubber or foam base gasket that came with the faucet over the hole (or run a thin ring of plumber's putty if no gasket is included). Feed the faucet's supply lines and threaded shank down through the hole, and settle the base flat and centered on the deck.
Secure it from below
From under the sink, thread the mounting nut or bracket onto the shank. Nudge the faucet straight from above, then tighten by hand and finish with a gentle turn of the basin wrench. It should feel solid and not spin — snug, not gorilla-tight.
Connect the hot and cold supply lines
Wrap a few turns of plumber's tape on the valve threads, then attach the flexible supply lines — hot to the left valve, cold to the right. Hand-tighten, then add about a quarter turn with a wrench. Do not force it; the seal comes from the washer, not from muscle.
Turn the water back on and flush the lines
Unscrew the aerator at the tip of the spout and set it aside. Open both shutoff valves slowly. Run hot and cold for 15–30 seconds to blow out any debris loosened during the swap, then thread the aerator back on.
Check for leaks — and seal the base
Dry every connection with a paper towel, then run the water and watch each joint for a full minute. A drip almost always means a nut needs another small turn. When everything is dry, wipe down the base; if you skipped the gasket, run a tidy bead of silicone caulk around the bottom to keep water off the counter.
What changes for a widespread (3-hole) faucet?
A widespread faucet is three separate pieces — a spout in the center and two handles on either side — set into holes that are usually 6 to 16 inches apart, most commonly on 8-inch centers. The steps are the same in spirit: shut off water, mount each piece, connect, test. The extra work is underneath, where a T-connector or a pair of hoses ties the two handles into the spout before you reach the supply valves. Plan for a little more time and a little more patience in the cabinet.
If you are still deciding between the two styles, our guide to 3-hole faucets and when to choose one walks through spacing and layout in detail. On the product side, the Jewel Widespread starts from $179.90 and the Cass Widespread from $184.90 — both use the same beginner-friendly connections, just more of them. One rule holds for every faucet: measure your hole spacing before you buy, because a single-hole faucet will not cover three holes without a deck plate.
Faucet in, but something is off? Quick fixes
Most first-install hiccups are small and fixable in a minute or two. Work through the likely cause before you undo anything major.
| Problem | Fix |
|---|---|
| Drip at a supply connection | Snug the nut a quarter turn; re-tape or add a washer if it persists |
| Weak or sputtering flow | Unscrew and rinse the aerator — trapped debris is the usual cause |
| Faucet rocks or spins | Re-tighten the mounting nut from below; reseat the base gasket |
| Water pools at the base | Reseat the gasket or run a fresh bead of silicone caulk |
| Hot and cold reversed | Confirm hot to the left valve, cold to the right, and swap if needed |
For anything beyond a first-day tweak — a worn cartridge, a stiff handle a year in, or a finish question — the owner's guide to faucet parts, care, and support covers replacement parts and everyday upkeep, all backed by VIGO's Limited Lifetime Warranty.
When should you call a plumber?
DIY covers the vast majority of faucet swaps, but a few situations are worth a professional. Call one if your shutoff valves are corroded, leaking, or missing; if the old faucet is seized to the deck; or if the job involves moving or adding supply lines rather than reusing the existing ones. Hiring out adds a labor charge on top of the faucet — our 2026 replacement-cost breakdown shows how DIY and pro pricing compare. There is no shame in the call; a good faucet outlasts the install either way.
Easy-install VIGO single-hole faucets to start with
Noma Single-Hole Faucet
From $114.90
Davidson Single-Hole Faucet
From $129.90
Meridian Dunn Single-Hole Faucet
From $134.90
Shop these categories
Frequently asked questions
How long does it take to install a bathroom faucet?
A like-for-like single-hole swap takes most people about 45 to 60 minutes with basic tools. First-timers may need a little longer, and a widespread (3-hole) faucet usually runs 60 to 90 minutes because there are more connections underneath.
Do I need a plumber to install a bathroom faucet?
Usually no. Reusing the existing holes and supply lines is a beginner project with no soldering or cutting. Call a plumber if the shutoff valves are corroded or missing, the old faucet is seized to the deck, or the job means moving supply lines.
What tools do I need to install a faucet?
A basin wrench, a regular adjustable wrench, a bucket and towels, and plumber's tape cover almost every install. A flashlight helps in the dark cabinet, and you only need silicone caulk or putty if your faucet lacks a base gasket.
Will a single-hole faucet fit my sink?
Only if your sink or countertop has a single mounting hole. If it has three holes spaced apart, you need a widespread faucet or a single-hole faucet paired with a deck plate to cover the extra holes. Always measure your hole spacing before buying.
Do I need plumber's putty or silicone caulk?
Most VIGO faucets include a rubber or foam base gasket, which makes putty optional. If your faucet has no gasket, seat it on plumber's putty or run a bead of silicone caulk around the base after install to keep water off the counter.
How much does it cost to have someone install it?
Doing it yourself costs only the faucet — from about $115 for a VIGO single-hole. Hiring a plumber adds a labor charge on top; our 2026 bathroom faucet replacement-cost guide compares DIY and professional pricing in detail.
Ready to make the swap?
Pick a faucet that fits your sink's hole count, set aside an hour, and keep a towel close. VIGO faucets ship with the gasket and mounting hardware you need — and a Limited Lifetime Warranty behind them.
Shop Bathroom Faucets
