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How to Plunge a Toilet  

With so many plungers in the market, which one is right for your toilet? Learn how to pick out the best plunger and use it properly when disaster strikes in the bathroom.

S20 E30, Richard Trethewey with toilet seats
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How to Replace a Toilet Seat

This Old House plumbing and heating expert Richard Trethewey shows us how to replace a toilet seat, explaining the standard shapes of seats and the potential problems a DIYer might encounter.

S20 E25, Richard Trethewey fixes a wobbly toilet and a stuck faucet handle
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Common Plumbing Issues: How to Fix a Wobbly Toilet and Stuck Faucet Handle

This Old House plumbing and heating expert Richard Trethewey helps a homeowner handle two very common plumbing issues.

S2 E12, Richard Trethewey in a bathtub
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How to Repair a Shower Valve in a Tile Wall

This Old House plumbing and heating expert Richard Trethewey and tile expert Joe Ferrante team up to repair a leaky shower valve installation

Richard Trethewey shows how to refinish an old cast-iron, claw-foot tub
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How to Refinish a Claw-Foot Tub

This Old House plumbing and heating expert Richard Trethewey shows how to save an old, but elegant, cast-iron bathtub.

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How to Choose a New Toilet Seat

Ask This Old House plumbing and heating expert Richard Trethewey discusses DIY Smarts on the basics of choosing and installing toilet seats.

S20 E12, Richard Trethewey replaces a tub drain
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How to Replace a Tub Drain

In this edition of DIY Smarts, plumbing and heating expert Richard Trethewey helps a homeowner with an old 1950s bathtub replace the tub drain assembly when the current one stops plugging the tub.

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How to Clear a Clogged Bathtub Drain

This Old House plumbing and heating expert Richard Trethewey shows how to fix a slow draining tub

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How to Tile a Bathroom Floor

Installing bathroom floor tiles isn’t a job for beginners. Watch what it takes as contractor Angelo McRae installs a new mosaic-tile floor.

Ask S5 E7 segment, Richard Trethewey changes a toilet seat
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How to Change a Toilet Seat

This Old House plumbing and heating expert Richard Trethewey and host Kevin O'Connor share tips for removing rusted, stubborn toilet seats

old Ask episode, replace a wall tile
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How to Replace a Wall Tile

In this how-to video, This Old House tile contractor Joe Ferrante replaces cracked ceramic tile

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How to Install a Tub Grab Bar

In this how-to video, create a safer bath with This Old House general contractor Tom Silva

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How to Install a Pedestal Sink

Plumbing expert Richard Trethewey makes a challenging bathroom renovation task look easy

How to Install a Bidet in Your Bathroom

Installing a bidet takes just a little bit of work and adds something extra to a master bath. Read on for tips on how to install one in your bathroom.

How To Drill Through Ceramic Tile With Ease

With the right tile drill bit, you’ll be able to drill into ceramic without cracking it. Read our guide to learn how.

Bathtub Tile Surround: Installation in 7 Steps

Learn the time and costs required to tile around a tub shower, including step-by-step instructions on pro installation.

How to Fix a Leaking Toilet

Here’s why your toilet might be leaking at the base and how to fix it to prevent costly structural damage.

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How to Replace a Shower Pan

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey installs a new waterproof shower floor.

How to Caulk a Bathtub

Bathtub caulking doesn’t have to be difficult. Read to learn which is the best caulk for a bathtub, and how to give your tub a fresh new seal.

Glass Block Window Installation for the Bathroom

Read this step-by-step guide on installing glass block in your bathroom.

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Ceramic Tile Flooring in 9 Steps

Here are simple installation tips on bathroom flooring and floor tile that’ll keep what’s underneath your feet solid and long lasting.

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How to Repair a 3 Handle Shower Faucet

Ask This Old House plumbing and heating expert Richard Trethewey repairs and replaces a leaky shower valve.

How to Turn a Dresser into a Bathroom Vanity

Taking a cue from reader remodels, we decided to retrofit a charming vintage dresser for a whole new purpose.

Bathroom Remodel Ideas on a Budget

Looking for a DIY bathroom remodel that won’t break the bank? See how a little bit of creativity and four gallons of paint kept costs way down and transformed this makeshift space.

Plumbing expert demonstrating how to unclog a bathroom sink.
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How to Unclog a Bathroom Sink

Ask This Old House plumbing and heating expert Richard Trethewey reveals the best ways to unclog a slow draining bathroom sink.

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How to Fix a Shower Faucet

Learn how to replace an old shower valve with a single handle with This Old House plumbing and heating expert Richard Trethewey.

How to Fix a Leaking Toilet

Identify parts and problems with this handy guide.

How to Install a Toilet

This Old House plumbing expert Richard Trethewey's method for putting in a new toilet—or replacing an old one.

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How to Clean a Clogged Shower Cartridge

Ask This Old House plumbing and heating expert Richard Trethewey travels to New York City to teach a homeowner how to clean her shower cartridge when it gets clogged.

How to Add the Perfect Half Bath

Tips and guidelines for squeezing a powder room into an existing floorplan.

All About Tile Grout and How to Clean It

Explore the basics of grout — the difference between cement-based and epoxy grout, sealers, colors and cleaning.

Bathtub Liner or Refinishing: Which Is Worth It?

Bathtub liners and spray refinishing both give you a new-looking tub without the cost and mess of ripping out the old one.