Ask This Old House

Richard travels to the Grand Canyon to help a homeowner with hard water by installing a new type of water softener; in Future House, Ross demonstrates a home organization app; in Build It, Tom builds a shadow box using wood from an old door.

Tom teaches a young fan how to build a tool box; Scott installs smart smoke and carbon monoxide detectors in Charlotte; Richard diagnoses a leaking temperature and pressure relief valve and installs an expansion tank to fix it.

A homeowner has never tiled before, so Tom teaches her how using a simple technique; Richard demonstrates a wireless leak detector that prevents floods; Jenn installs a water feature that collects and reuses rainwater.

Roger helps reseed a dead section of lawn and blend it in with the rest of the yard; Richard shows the basics of changing a toilet; in Future House, Ross sees an off-grid home in South Carolina that’s testing commercial HVAC equipment.

Richard replaces a small radiator with one that’s the correct size; Roger demonstrates the importance of sunscreen on the jobsite; in Milwaukee, Mason Mark McCullough makes his first house call to teach a homeowner how to repoint brick.

Richard breaks down the differences between water filters; Roger removes a tree that’s leaning dangerously towards a house; Tom demonstrates different ways to locate studs in a wall; Scott installs a smart garage door opener.

It’s the holiday season at the AskTOH barn! Tom and Kevin build a toy box for Tom’s grandson; Kevin travels to UL Laboratories in Chicago to learn about preventing fires from holiday decorations; the guys exchange gifts.

Roger teaches how to care for orchids; Tom fixes a window that was not hung properly and is now letting air in; Mark demonstrates how to clean brick with acid; in Future House, Ross finds a solar panel that can generate drinking water.

Roger teaches his apprentice how to not only repair a damaged walkway, but also how to identify what caused the damage so it can be prevented in the future; Tom patches a chipped wood floor using a Dutchman and hand tools.

Mark tests out different tools that collect silica dust more efficiently; Richard shims a wobbly toilet; Kevin heads to the Catskills to build a wooden slice table with Jimmy DiResta, a maker who’s famous online for his how-to videos.

Richard heads to Milwaukee to install an instantaneous water heater; Tom demonstrates some techniques for cutting straight edges with a circular saw; Mark rebuilds a retaining wall that was stacked with the wrong material.

Richard shows Kevin the proper way to ventilate a sink; in Nashville, Tom converts a regular door into a Dutch door; Jenn updates a landscape by moving around, dividing, and pruning the current plants in the yard.

Roger installs a downspout alternative; painter Mauro Henrique explains the differences between various types of paintbrushes; Richard installs a vanity for homeowners who gave up on it 7 years ago; Tom shows closet storage options.

Roger tends to a lawn that was seeded in the summer and is not doing well; Richard goes over low-budget kitchen upgrades; Tom travels to a futuristic workshop in San Francisco to build a stool using computer-based tools.

Richard diagnoses and repairs a water system with air in it; in Open House, Tom analyzes a staircase that is not to code; Mauro makes his first house call to teach a homeowner the basics of painting a room.

In this special episode of AskTOH, the guys head to Texas in the aftermath of Hurricane Harvey to profile nonprofits working to tear down, clean out, and rebuild homes that were destroyed during the storm.

Mark installs a metal railing using anchoring cement; in Open House, Richard weighs the pros and cons of steam heat; Tom demonstrates the correct way to replace a cracked kitchen floor tile.

Richard demonstrates a solution for replacing a water main shutoff; Jenn travels to Tennessee to build a planter out of an animal feeding trough; Mark waterproofs brick; Kevin heads back to Jimmy DiResta’s shop to build a sign.

Richard discusses the possible causes and solutions for a frozen air conditioner; Tom fixes an end cap on a stair railing that is loose; Ross travels to Napa to tour a house that’s testing a variety of interconnected smart home devices.

In Nashville, Richard repairs and replaces a leaking shower valve; Roger explains safety features built into all chainsaws; Kevin makes a bucket stool with Ben Uyeda, a maker best known for his design-based online videos.

Mauro teaches a homeowner how to paint a metal door; Mark explains how to match mortar for repointing jobs; Tom teaches apprentice Austin how to make a variety of different wood joints by building simple utility boxes.

Tom installs an alternative to a gutter when a traditional one does not work; Ross and Richard update Kevin on a Future House technology; Jenn heads to Phoenix to recreate the desert in a homeowner’s front yard.

Mauro travels to Sacramento to show a homeowner the safe way to strip paint; Tom explains basic chiseling techniques; Richard helps a special homeowner hook up her refrigerator with an icemaker.

Mark teaches apprentice Krysten how to reface a granite fireplace; Jenn gives some tips on starting an organic garden; Richard helps a homeowner replace her kitchen faucet when she realizes her shutoff valve is broken.

Tom uses multiple techniques to make a drafty door weathertight; Mauro demonstrates the most effective way to clean a paintbrush; Roger and Jenn test out a variety of battery operated lawn tools.