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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.

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How to Select a Bathroom Vanity

From ornate to out-of-the-box, Richard Trethewey explains some DIY Smarts on what to consider when shopping for a new bathroom vanity.

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How to Clean Tile Grout With Homemade Cleaner

In this edition of DIY Smarts, Ask This Old House general contractor Tom Silva offers cleaning tips on how to get rid of dirty tile grout using only household supplies.

Toilet with a nearby plunger
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How to Unclog a Toilet

A clogged toilet is one of the most common and stressful problems people have to deal with in their homes. If not cleared swiftly and properly, it can become a big mess, possibly spilling onto the bathroom floor and leaking through to the rooms below. In this video, This Old House plumbing and heating contractor Richard Trethewey explains how to unclog a toilet.

Richard Trethewey installs a new waterproof shower floor
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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.

S20 E20, Richard Trethewey talks about bidets
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Understanding Bidets

Host Kevin O’Connor, meets with plumbing and heating expert Richard Trethewey to discuss the various benefits of installing a bidet in your bathroom.

Joe Ferrante sets tile in Ask This Old House
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How to Set Tile

In this video, a TOH pro explains how to set ceramic tile in a subway pattern

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The Story Behind Antique Bath Fixtures

Ask This Old House plumbing expert Richard Trethewey gives a history lesson on bath fixtures and piping

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 Snake a Clogged Drain

Ask This Old House plumbing and heating expert Richard Trethewey shows how to clear a stopped bathtub or shower drain

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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

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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 Replace Pedestal Sink Parts

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner replace all the plumbing components in his pedestal sink.

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How to Install a Pedestal Sink

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

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How to Replace a Bathroom Faucet

Need to update your bathroom sink faucet? Watch this DIY Smarts as Ask This Old House plumbing and heating expert Richard Trethewey demonstrates how to replace a bathroom faucet.

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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.

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.

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How to Choose a Bathroom Exhaust Fan

Ask This Old House master electrician Heath Eastman discusses new technology for bathroom vent fans.

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How to Install a Pressure-Balance Shower Valve

Maintaining safe shower water temperatures with This Old House plumbing and heating expert Richard Trethewey

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How to Caulk Around a Bathtub

Ask This Old House general contractor Tom Silva demonstrates the correct materials and techniques required for re-caulking a bathtub

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How to Paint a Mold-Resistant Bathroom

Ask This Old House painter Mauro Henrique paints a bathroom using a mold-resistant paint, in this edition of DIY Smarts.

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How to Replace a Shower Cartridge

Ask This Old House plumbing and heating expert Richard Trethewey travels to Seattle to help a homeowner whose shower runs cold whenever there’s a demand for hot water elsewhere in the house.

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Future House Extras | Space Bathroom

In this web exclusive extra, Ask This Old House home technology expert Ross Trethewey travels to NASA Johnson Space Center to meet with Mike Berrill and see how astronauts use the bathroom in space

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How to Drain and Vent a Bathroom Sink

Ask This Old House plumbing and heating expert Richard Trethewey helps add ventilation to a bathroom sink that is unvented.

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How to Rotate a Toilet

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner rotate a toilet to a more sensible orientation.

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How to Rebuild a Shutoff Valve

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner replace the shutoff valve underneath her kitchen sink

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TOH Know-How: All About Shower Installation

Tom Silva shows us how to get a shower tile-ready using waterproof building panels from Schluter