This Old House

Plumbing and heating expert Richard Trethewey heads to Cleveland, Ohio to help a homeowner replace a bathtub drain trap; Tom helps a homeowner repair a cracked drywall ceiling.

Ask TOH | Bathtub Drain, Ceiling Repair

General contractor Tom Silva shows host Kevin O'Connor a few different types of squares used for general carpentry; What Is It?; Roger helps a homeowner build a new patio using concrete paving bricks.

Ask TOH | Carpentry Squares, Brick Patio

Plumbing and heating expert Richard Trethewey helps a homeowner replace a broken cast-iron closet flange for a toilet; Tom helps a homeowner repair a cracked plaster wall using a new type of adhesive system; tip on digging holes sent in by a viewer.

Ask TOH | Replacing a Toilet Flange and Plaster Repair

Richard shows Kevin a few devices for preventing plumbing floods; Roger helps a pair of homeowners replace some overgrown shrubs with appropriate foundation plantings; Tom shows Kevin how to repair a rotted windowsill using a two-part epoxy.

Ask TOH | Flood Prevention, Foundation Plants, Epoxy Repairs

Richard Trethewey helps homeowners with a jammed kitchen garbage disposer; Kevin learns from a painting expert how to remove exterior paint from cedar siding; Tom and Richard show Kevin the do's and don'ts of cutting holes and notches in joists.

Ask TOH | Disposers, Exterior Paint Stripping, Cutting Joists

Helping a homeowner remove an old tree that threatens to fall on her house; What is it?; Tom helps a homeowner bring some character into a room by installing wood trim around a plain doorway.

Ask TOH | Tree Removal, Door Trim

Ways to save energy; Tom helps a homeowner select and install energy-efficient windows; Richard shares some tips to reduce energy needed for heating water; Kevin and an energy auditor discuss how to improve a heating and air conditioning system.

Ask TOH | Home Energy Savings

Roger Cook helps transform a muddy backyard into a low-maintenance play area; Richard shows Kevin several types of portable space heaters; Roger, Kevin and Richard are joined by Tom for What is it?; Tom helps with a bathroom fan that drips water.

Ask TOH | Play Area, Space Heaters, Bath Fan

Landscaping contractor Roger Cook sets out to pick the perfect Christmas tree at a local tree farm; Roger shares tips for keeping Christmas trees healthy for the season; Tom heads to Florida to show a homeowner the proper way to caulk a leaky window.

Ask TOH | Christmas Trees, Caulking a Window

An innovative way to handle stormwater runoff from the roof; What Is It?; Tom shows a homeowner how to refinish her hardwood floors.

Ask TOH | Roof Runoff, Refinishing Hardwood Floors

Landscaping contractor Roger Cook replaces the cracked flagstone on a set of front steps with bluestone; What Is It?; Richard visits a serious cook and helps her replace her old electric stove with a new gas range.

Ask TOH | Cracked Flagstone, Replacing an Electric Range

Roger Cook shows Kevin O'Connor several different ways to determine the grade, or pitch, of a landscape; Tom and Richard show Kevin different ways to see what's inside a wall; Richard helps a homeowner repair a bathtub that won't hold water.

Ask TOH | Grading, Inside Walls, Bathtub Stopper

Landscaping contractor Roger Cook helps a homeowner install a new vinyl fence; Kevin O'Connor heads to Omaha, Nebraska, where he helps install a protective epoxy coating on a homeowner's garage floor.

Ask TOH | Vinyl Fence, Garage Floor Epoxy

Helping a homeowner control the temperature of her radiators, which are overheating the rooms upstairs; helping a homeowner squeeze a new refrigerator into an opening that's just a little too small; how to tame a tangle of bungee cords.

Ask TOH | Radiator Control Valves, Refrigerator Install

Plumbing and heating expert Richard Trethewey helps a homeowner with a smelly dishwasher; Roger heads to Iowa to help a homeowner transplant a rose bush; up in the loft, Tom shows Kevin the proper way to change a circular saw blade.

Ask TOH | Dishwasher Smells, Rose Bush, Saw Blade

Tom Silva helps replace a skylight that is leaking water down into the kitchen below; Tom, Kevin O'Connor, Richard Trethewey, and Roger Cook ask "What is it?"; Peg Preble shows Kevin how to troubleshoot and repair a faulty three-way light switch.

Ask TOH | Skylight, 3-Way Light Switch

Landscaping contractor Roger Cook heads to Oregon to help a homeowner improve her lawn, starting with a simple soil test; Richard and Kevin visit a local homecenter to identify several different types of water supply pipes.

Ask TOH | Soil Test, Water Supply Pipes

Richard Trethewey heads to Phoenix, Arizona to help a pair of homeowners install a new water softening system; Tom Silva shows a homeowner how to install fiber-cement shingles on his new backyard shed.

Ask TOH | Water Softening, Fiber-Cement Siding

How to save energy and money by increasing attic insulation; making a dark walkway safer by adding low-voltage landscape lighting; plumbing and heating expert Richard Trethewey helps a homeowner replace her old kitchen faucet.

Ask TOH | Attic Insulation, Landscape Lighting, Kitchen Faucet

Projects for kids; how to build a soccer goal using PVC plumbing pipes; demonstrating how to build a pair of stilts; showing a family how to build a sandbox and make replicas of fossils.

Ask TOH | The Kids Show: Soccer Goal, Stilts, Sandbox

Tom demonstrates how to install an old mortised lockset on a new door; Richard helps a homeowner install a pellet stove to provide supplemental heat; Roger shows Kevin several different types of lawn mowers that do not require gasoline.

Ask TOH | Mortise Lockset, Pellet Stove, Gas-Free Lawn Mowers

Contractor Roger Cook replaces a set of rotten wooden stairs with new steps made of granite; the latest technology for deadbolt locks; Richard travels to Raleigh, N.C., to help a homeowner replace the leaky polybutylene pipes throughout his house.

Ask TOH | Granite Steps, Deadbolt Locks, Pipe Repair

How to improve a lawn using a "slice seeder"; how to drive a nail in a tight spot; tips on preparing a home for sale; Richard visits a homeowner to help fix a water leak in her living room ceiling.

Ask TOH | Lawn Over-Seeding, Home Sale, Ceiling Leak

The life and work of tile expert Joe Ferrante; helping a homeowner replace a broken bathroom tile with a matching new tile; different ways to cut ceramic and stone tile using both hand and power tools; installing a backsplash using glass tile.

Ask TOH | Life and Work of Tile Expert Joe Ferrante

Helping a homeowner with very high water pressure by installing a pressure-reducing valve; types of grass that are appropriate for certain climates; Tom helps a homeowner who ran into a problem while installing crown molding on his kitchen cabinets.

Ask TOH | Pressure Reducing Valve, Grass, Cabinet Crown Molding

Richard shows Kevin how to replace all the parts inside a toilet tank; Roger and Kevin look at different types of above-ground sprinklers; basic tips on watering a lawn; Tom shows Kevin how to build a simple bookcase using plywood and power tools.

Ask TOH | Toilet Tank, Watering a Lawn, Bookcase

In Arizona, Richard visits the Grand Canyon, then he helps a homeowner with hard water install a new type of water softener; Ross demonstrates a home organization app; Tom builds a shadow box using wood from an old, salvaged door.

Ask TOH | Water Softener, App, Shadow Box

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

Ask TOH | Tool Box, Smoke Detector, Valve

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

Ask TOH | Backsplash, Rainwater Feature

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

Ask TOH | Patch Lawn, Toilet, Off-Grid

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.

Ask TOH | Radiator Swap, Brick Repointing

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

Ask TOH | Tree Removal, 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.

Ask TOH | Happy Holidays from AskTOH!

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 from thin air.

Ask TOH | Window Gap, Solar 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.

Walkway Reset, Chipped Floor | Ask TOH

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 known for his online how-to videos.

Ask TOH | Jimmy Diresta, Wobbly Toilet

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.

Ask TOH | Tankless Heater, Retaining Wall

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.

Ask TOH | Dutch Door, Landscape Checkers

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 seven years ago; Tom shows closet storage options.

Ask TOH | Rain Chain, Vanity Install

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.

Ask TOH | Lawn Care, Futuristic Workshop

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

Ask TOH | Spitting Faucet, Painting 101

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.

Ask TOH | Houston After Harvey

Mark installs a metal railing using anchoring cement; Richard weighs the pros and cons of steam heat; Tom demonstrates the correct way to replace a cracked kitchen floor tile; Roger, Jenn and Kevin try out a tool that easily splits kindling.

Metal Railing, Tile Replacement | Ask TOH

Richard demonstrates solutions 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.

Jimmy DiResta, Trough Planter | Ask TOH

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

Stair Railing, Smart Show House | Ask TOH

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.

Shower Valve, Chain Saw, Bucket Stool | Ask TOH

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.

Paint Door, Wood Joints | Ask TOH

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

Gutterless Gutters, Desert Plan | Ask TOH

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 ice maker.

Paint Stripping, Fridge Hookup | Ask TOH

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.

Reface Fireplace, Kitchen Faucet | Ask TOH

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.

Drafty Door, Clean Paintbrushes | Ask TOH

In Austin, Ross visits a community that plans to have all net zero energy housing; Richard demonstrates the uses of less common wrenches; Tom and Kevin build a console table using a maple slab with a live edge on it.

Net Zero Community, Live Edge | Ask TOH

Jenn installs a plunge pool in a small backyard; Tom gives some basic tips about insulating an attic; Richard travels to Florida to help a homeowner select and install the right electric water heater.

Plunge Pool, Heat Pump | Ask TOH

Mark explains how to make concrete; Tom replaces a broken pane in a basement window; Ross travels to NASA Johnson Space Center to learn about technology used on the International Space Station.

Window Repair, Space House Tour | Ask TOH

Mark installs a front walkway using natural stone; Mauro explains the uses and techniques for different types of painter's tape; Tom and Kevin build a headboard using rustic barnboard.

Stone Walkway, Rustic Headboard | Ask TOH

Richard installs a garage heater; Tom teaches the basics of sanding; Ross installs a DIY security system; Mark investigates a strange issue with foundations in the Northeast.

Garage Heat, DIY Security System | Ask TOH

Tom installs crown molding on cabinets with full overlay doors; Richard discusses toilet seats; Mauro teaches apprentice Mary how to strip wallpaper without using any chemicals.

Crown Molding, Strip Wallpaper | Ask TOH

Tom and Kevin build a modern storage bench out of a single sheet of MDF and Mauro paints it; Richard helps a homeowner whose shower runs cold if there's hot water needed elsewhere in the house.

Storage Bench, Old Shower Valve | Ask TOH

Tools that make good gifts; Jenn helps a homeowner design a tropical backyard landscape; former apprentice Nathan returns to help Tom change the swing of an entry door.

Swap Door Swing, Tropical Yard | Ask TOH

Mark replaces a chipped brick in a fireplace surround and Mauro updates it with a whitewashed look; Richard shares advice on maintaining water heaters; Tom demonstrates the importance of a drip edge.

Fireplace Makeover, Drip Edges | Ask TOH

Tom builds a DIY swing set; Nathan demonstrates how to build saw horses using leftover materials; Ross learns about automated home construction.

Swing Set, Robotic Construction | Ask TOH

Mark replaces a concrete walkway with brick pavers; Richard explains how gas piping is installed in a home; Kevin returns to upstate New York to build a farmhouse table with maker Jimmy DiResta.

Concrete Walkway, Jimmy DiResta | Ask TOH

Kevin learns how to protect homes from earthquakes; Mark stains concrete; Tom explains why and how to change the locks in a new home; Richard travels to Cleveland to reroute a lengthy dryer vent.

Seismic Retrofit, Dryer Vent | Ask TOH

Nathan installs soft-close kitchen cabinets; the team shares some home inspection nightmares; Richard and Kevin discuss how gas regulators work; Jenn cleans up an overgrown garden.

Cabinet Upgrade, Secret Garden | Ask TOH

Tom replaces a bi-fold closet door; Jenn discusses alternatives to flower bouquets for gift giving; Mauro paints a bathroom using a mold resistant paint.

Closet Door, Bathroom Paint | Ask TOH

Jenn installs a vertical garden to maximize space; Tom explains the uses for different drill bits; Richard travels to a plumbing facility to learn about advances in toilet engineering.

Vertical Garden, Toilet Factory | Ask TOH

Mark travels to San Diego to repair a crack in a concrete retaining wall with a stucco finish; Tom explains how air compressors work; Richard helps an expecting couple select and install a gas dryer.

Stucco Repair, Gas Dryer | Ask TOH

Mauro helps clean up and repaint a rusty, metal railing; Richard discusses some innovations that can make clearing a clogged sink easier; Tom and Kevin build a wine rack out of a reclaimed beam.

Paint Metal Railing, Wine Rack | Ask TOH

Jenn learns about different types of prairie grasses and how to care for them; Kevin learns how to make a home more resistant to wildfires; Ross sees a robotic, ground mounted solar array.

Prairie Grasses, Solar Flower | Ask TOH

Jenn upgrades an irrigation system; the team looks at Home Inspection Nightmares; Tom discusses kitchen renovations; Kevin builds an Adirondack-style outdoor chair with Jimmy DiResta.

Smart Irrigation, Jimmy DiResta | Ask TOH

Richard updates a filter on a retro faucet; Mark explains different masonry jointers; Nathan explains when and how to use a Japanese pull saw; Tom demonstrates how to re-caulk a bathtub.

Water Filter, Bathroom Caulking | Ask TOH

Mark repoints a crumbling fieldstone foundation; Tom discusses proper disposal techniques for oily rags; Mauro smooths over a textured ceiling using joint compound.

Fix Foundation, Textured Ceiling | Ask TOH

Tom replaces split-level stair treads in a mid-century modern home; Jenn shares some tips about pruners; Richard shortens a gas pipe for a stove that doesn't fit against the wall.

Stair Treads, Gas Stove Pipe | Ask TOH

Roger and Jenn share tips for killing weeds; Mark restores a damaged historic fireplace; Richard and Ross discuss thermostat improvements; Tom adds structure to a porch to safely hang a swing.

Restore Fireplace, Porch Swing | Ask TOH

Ross tests out a new stud finder; Nathan repairs a wood floor burned by a hot iron; Tom gives techniques for using a table saw safely; Jenn replaces crushed foundation plantings.

Scorched Floor, Hardy Plantings | Ask TOH

Conversations a homeowner and contractor should have before a project; Richard repairs an HVAC system that is creating too much humidity; Mauro demonstrates a paint sprayer; Mark patches a brick wall.

Humidity Mystery, Brick Patch | Ask TOH

Tom demonstrates how to sharpen a knife; Mauro restains a deck; Mark demonstrates the best way to prevent smoke when building a fire; Ross learns about innovations to automatic water shutoff valves.

Deck Staining, Water Monitoring | Ask TOH

Jenn adds curb appeal with plants that match a house's design; the team shares home inspection nightmares; Mauro accurately matches paint color; Tom and Kevin carve wooden serving utensils with pine.

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