Ask This Old House

Tom learns how to create a keepsake box out of island mango wood; Richard Trethewey learns how to add storage to an existing photovoltaic array; Roger helps a family grow an organic garden of raised beds and fruit trees that will grow well in Hawaii.

Jenn plants a rain garden to keep runoff and waste out of marshlands; Scott brightens up a bedroom with new overhead lighting; Tom gives tips on installing cabinet hardware; Richard shows a tool with a red handle and small teeth.

Scott demonstrates how surge protection safeguards a home's appliances and electronics; Tom and Kevin build a deck box planter using western red cedar; Ross Trethewey features a tablet attachment that makes 3D scans of home interiors in Future House.

Painter Mauro Henrique demonstrates a masking primer that leaves clean lines on a window; Richard tracks down the source of a clogged drain using some high-tech equipment; Scott warms up a chilly bathroom by installing an electric convection heater.

Scott visits Alaska to install a portable generator with a manual transfer switch to power hardwired appliances; Richard goes inside a dishwasher to explain each cycle; Tom repairs a piece of wood nosing.

Richard installs a whole house water filtration system; Tom walks Kevin through various types of woods; Ross visits a hotel room that's powered by voice activation; Jenn Nawada installs a bluestone patio with a reclaimed granite fire pit.

The dangers of carbon monoxide and how an operational CO detector could be the difference between life and death; using stock lumber and millwork from a home center to build a home message center that mimics a window; a white orb on a stake.

Richard revisits a homeowner to repair a water heater he thought was fixed four years ago; Tom installs a storm door with a dog in mind; Ross Trethewey looks at voice-activated smart devices.

Tom helps a homeowner install a new door knob passage set on his closet door; Richard gives a history lesson about plumbing and shows off new toilet technology; Jenn uses a historic landscape design as inspiration to revive an overgrown backyard.

Scott helps a homeowner raise and lower a light with a motorized lift; Tom shows Kevin the best uses for a jigsaw and how to choose blades; Roger visits Kentucky to help a homeowner repair his once lush lawn.

Tom and Kevin use scrap wood to create an end grain cutting board in Build It; Scott installs surface-mounted downlights in a living room; What Is It?; Roger discusses the best ways to keep mice out of the house.

Tom is in Cincinnati to create a simulated wainscoting out of base cap molding; NASA astronaut Mike Foreman shows off a few space tools; Richard helps a homeowner get enough hot water for his children's bath time.

Kevin gets a firsthand look at Nick Offerman's woodworking shop; home technology expert Ross Trethewey looks at a new device to track home energy usage in Future House; Richard shows what happens when one uses the wrong soap in the dishwasher.

Landscape designer Jenn Nawada learns about rooftop and small space gardens; Tom explains the best practices to remove stains from plaster and drywall; Scott helps a homeowner power his shed by running electricity underground from his house.

An environmentally safe way to keep walkways safe during the winter; showing how and when to use hand saws; helping a homeowner diagnose a problem with a hot water radiator; installing thin LED lights underneath the overhang of a homeowner's garage.

Roger rips up an old, dangerous walkway to replace it with bluestone; Scott explains the best wire nuts to use for each project; Kevin gets a lesson on making mead.

Tom heads to Chicago to transform a one-car garage into a carpentry workshop; Scott installs a wireless light switch; Richard gives a history lesson on antique bath fixtures.

Kevin helps a contractor install a home elevator for a young man with disabilities; Jenn Nawada investigates how to grow microgreens; Tom explains the best way to match historic moldings; Richard diagnoses a problem with well water.

Richard travels to Seattle to help a couple choose and install laundry appliances; Tom shows Kevin new table saw technology; Scott repairs a three-way switch.

Ross Trethewey helps build a robotic wall that could be the key for tight space; Tom and Kevin use reclaimed pine heart wood to create a bench with a historic theme.

Richard learns about a way to heat and cool a house using a new room-by-room ventilation system; Tom explains the best ways to patch a small hole in the wall using several methods; a nonconductive electrical tool to make working with wires easier.

Tom fixes a front porch by replacing a single deck board in a tight space; Richard receives an email about a shower that has been stained green; Scott brings more power to a bedroom and is able to conceal the wiring with crown molding.

Roger helps plant a home orchard using apple and pear trees; Tom shows Kevin how to use a circular saw and how to find one that fits individual project needs; Richard installs a new tank water heater and discusses the new regulations on them.

Using store-bought stair treads to create a bookshelf; a new LED light with a built-in motion detector designed for use in a closet; using existing plants to transform the look of a home's foundation.