Ask This Old HouseSeason 112012 · 26 episodesEpisodes1Transforming Stock Shelving; New Washing Machine ValveTransforming stock shelving into a custom built-in; installing a new washing machine valve.2Bluestone Patio; Hanging Bikes in a GarageInstalling a bluestone patio; hanging bikes in a small garage.3Custom Fireplace Mantle; Repairing a Leaking Kitchen FaucetBuilding a custom fireplace mantle; garden edging; repairing a leaking kitchen faucet.4Laying Sod in the Backyard; Installing a Wireless ThermostatLaying sod in the backyard; finding measurements without doing math; wireless thermostat controls the heating system.5Planting Palm Trees; Replacing an Old Heating SystemPlanting several varieties of palm trees in a front yard; light bulbs; Replacing an old heating system and hot water heater with a more efficient single appliance.6Special New York EpisodeThe crew visits New York City, where plumbing and heating expert Richard Trethewey tours a scale model of the city. Host Kevin O'Connor and a local electrician add task lighting to a Brooklyn kitchen. The guys play "What Is It" in Times Square with Jimmy Fallon. Landscape contractor Roger visits the Highline. General contractor Tom installs cable deck railing in Greenwich Village.7New Kitchen Sink and Faucet; Insulated Sidelights on a Front DoorPlumbing and heating expert Richard Trethewey heads to Colorado Spings to install a brand new kitchen sink and faucet. General contractor Tom Silva installs insulated sidelights on a front door.8Privacy Fence; Replacing a Clogged Shower ValveLandscape contractor Roger Cook works with a fencing contractor to install a vinyl privacy fence. Then, Roger, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Richard replaces a clogged shower valve.9Interior Window Trim; Heating a Swimming PoolGeneral contractor Tom Silva installs interior window trim. Richard heats a swimming pool using an air conditioner.10Properly Mulching Garden Beds; Installing a Natural Gas LineLandscape contractor Roger Cook shows a homeowner how to properly mulch his garden beds. Then Roger, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Richard installs a natural gas line for a barbeque grill.11Using Hand Planes; Repairing a Cracked Stone WalkwayIn the workshop, general contractor Tom Silva demonstrates the proper way to use hand planes. Then, Tom, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook ask "What Is It?" Afterward, Roger helps a homeowner repair a cracked stone walkway.12Ceiling Fan; Installing a Water SoftenerHost Kevin O'Connor and electrician Scott Caron head to Denver to install a ceiling fan on a cathedral ceiling. Then, Kevin, along with general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook ask "What Is It?" Afterward, Richard visits New Jersey to install a water softener.13Transplanting a Rose Bush; Replacing Old Outdoor LightingLandscape contractor Roger Cook helps a homeowner temporarily transplant a mature rose bush while exterior work takes place. Then, Roger, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Richard shows Kevin some rookie plumbing mistakes. And Tom and Kevin replace old outdoor lighting with new fixtures.14Restoring Terrazzo Floors; Repairing a Cracked Floor JoistHost Kevin O'Connor heads to Del Ray Beach, Florida to restore Terrazzo floors. Then, Kevin, along with landscape contractor Roger Cook, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Tom helps a homeowner repair a cracked floor joist.15Toilet Installation; Patching a Lawn with Grass SeedPlumbing and heating expert Richard Trethewey heads to Cheyenne, Wyoming, to help a homeowner install a toilet. Then, Richard, along with landscape contractor Roger Cook, host Kevin O'Connor, and general contractor Tom Silva ask "What Is It?" Roger and Kevin patch a lawn with grass seed.16Hanging a Flat Panel TV; Controlling Insects Without PesticidesMaster electrician Scott Caron helps a homeowner hang a flat-panel television on the wall and conceal all the wiring. Back in the workshop, Scott shows Kevin examples of many different types of electrical outlets. Roger heads to Miami to help a homeowner control the insect pests in her yard without the use of pesticides.17Maintaining Kitchen Appliances; Installing a Rain GutterHost Kevin O'Connor meets appliance repairman Richie Isaacson to learn how to maintain kitchen appliances. Then, Kevin, along with landscape contractor Roger Cook, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Tom helps a homeowner install a rain gutter, downspout, and rain barrel.18Storage Bench; Soldering Pipes; Overgrown Perennial GardenIn the workshop, general contractor Tom Silva and host Kevin O'Connor build a storage bench for an entryway. Then, plumbing and heating expert Richard Trethewey demonstrates how to solder copper pipes properly. Afterward, landscape contractor Roger Cook helps a homeowner maintain an overgrown perennial garden.19Orchids as Houseplants; Purchasing a Kitchen Wall CabinetLandscape contractor Roger Cook visits a tropical botanic garden to learn how to care for orchids as houseplants. Then, Roger, along with host Kevin O'Connor, plumbing and heating expert Richard Trethewey, and general contractor Tom Silva ask "What Is It?" Afterward, Tom helps a homeowner purchase and install a kitchen wall cabinet.20Insulating Ductwork; Maintaining Clothes Washers and DryersPlumbing and heating expert Richard Trethewey visits Cortland, Illinois, to learn how corn is harvested and then to help a homeowner insulate ductwork. Landscape contractor Roger Cook demonstrates proper pruning technique. Roger, Richard, host Kevin O'Connor, and general contractor Tom Silva ask "What Is It?" Kevin learns how to maintain washers and dryers.21Ductless Heat Pump; LED LightingPlumbing and heating expert Richard Trethewey and host Kevin O'Connor install a ductless heat pump to heat and cool a room. Richard, Kevin, landscape contractor Roger Cook, and general contractor Tom Silva ask "What Is It?" Master electrician Scott Caron demonstrates new technologies and applications for LED lighting. Roger learns how to select houseplants for different situations.22Solving a Melted Mystery; Whole-House Energy AuditGeneral contractor Tom Silva helps a homeowner solve the mystery of her melted vinyl siding.23Using Ladders Safely; Replacing a Shower ValveGeneral contractor Tom Silva and host Kevin O'Connor demonstrate how to use all types of ladders safely. Then plumbing and heating expert Richard Trethewey replaces a three-handle shower valve with a single-handle antiscald valve.24Surge Protectors, Cutting StoneMaster electrician Scott Caron installs several types of surge protection. Then, general contractor Tom Silva, host Kevin O'Connor, landscape contractor Roger Cook, and plumbing and heating expert Richard Trethewey ask "What Is It?" Afterward, Roger demonstrates how to cut and shape stones for hardscaping projects.25Custom Concrete Countertops; Cordless Landscape ToolsHow to make and install custom concrete countertops. Can you install watertight connections without soldering? Cordless landscape tools.26Painting Kitchen Cabinets; Installing a Smart ThermostatThe final episode of the 2012/13 season investigates how subway trains are serviced. The crew shows how to paint kitchen cabinets; estimate landscape material by the cubic yard; and how to install a smart thermostat.Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10Season 12Season 13Season 14Season 15Season 16Season 17Season 18Season 19Season 20Season 21Season 22Season 23Season 24Season 25