Ask This Old House

New host Kevin O'Connor arrives at the barn (a little late) and meets Roger, Richard, and Tom. Tom and Kevin discuss different types of deadbolts and demonstrate how to install one. Roger trims some hedges. Richard and Kevin fix a heating system.

Tom Silva secures a shaky newel post at the top of a stairway. The guys ask "What is it?" Richard replaces a 50-year-old water heater with a new model designed to meet strict new national safety regulations.

Roger turns a neglected slate walkway into an attractive and safe footpath. Te guys ask "What is it?" Richard helps diagnose and repair a frustrating leak in a fiberglass shower stall.

Tom shows Kevin how to repair different size holes in drywall. The guys ask "What is it?" Richard replaces a large 1920s wall-mounted toilet with a new model designed to fit an existing flange.

Roger installs a backyard drywell to handle the torrent of the rainfall from roof gutters. The guys ask "What is it?" Tom shows how to install a safety grab bar in a bathtub.

Tom shows host Kevin how to install interior window trim. Roger Cook enlists the help of landscape architect Tom Wirth to help hide a group of unsightly utility boxes. The guys ask "What is it?" Richard shows a simple fix for the broken kitchen spray hose.

Roger Cook helps plant ivy and pachysandra. Tom Silva heads off to Florida to help Miami homeowner Marc Jacobson unstick the sash on his double-hung windows.

Tom Silva installs a pre-finished wood floor. Richard replaces a bathroom sink stopper that's being held together with an old popsicle stick.

Roger Cook removes poison ivy without the use of herbicides. The guys ask "What is it?" Tom shows how to install cedar shingles and weave an outside corner..

Chimney expert Mark Schaub helps homeowner Terry Peterson repair the water heater flue in his chimney. The guys ask "What is it?" Richard installs an "anti-sweat" valve to prevent condensation on a toilet tank.

Tom Silva installs a handrail in his spilt-level stairway. The guys ask "What is it?" Then Roger shows how to transplant a large rhododendron to another area of the yard.

Roger repairs a drip irrigation system The guys ask "What is it?" Richard and tile expert Joe Ferrante help repair a leaky bathtub once and for all.

Tom quiets a squeaky hardwood floors. The guys ask "What is it?" Roger helps a homeowner build a set of timber steps on a short slope outside her home.

Roger installs a brick walkway at the front entrance to his house. The guys ask "What is it?" Tom shows Kevin different ways to cut a perfect miter in wood trim.

Tom Silva fixes stubborn sliding closet doors. The guys ask "What is it?" Richard shows Kevin the basics of electric radiant floor heat. Then Kevin and preservation specialist Sally Zimmerman use a new software package to help homeowners select historically appropriate exterior paint colors.

Richard Trethewey and a water specialist examine water quality and discuss the installation of a water softener and sediment filter. The guys ask "What is it?" Tom replaces a rotten board in her oak hardwood flooring.

Tom snakes wire for a pair of outdoor speakers. The guys ask "What is it?" Roger and Kevin head outside to plant a magnolia tree in front of the barn.

Roger shows a homeowner how to protect his ornamental shrubs from the ravages of hungry deer. Richard answers a viewer's question about PVC pipe connections. The guys ask "What is it?" Tom heads out to help the Ryan family fix a shower door.

Tom shows Kevin how to cut a pane of glass safely and accurately. Roger helps a homeowner beautify a fieldstone wall behind her home with two varieties of flowering vines. The guys ask "What is it?" Richard installs a portable air conditioning unit in an overheated attic apartment.

Richard installs a programmable thermostat. The guys ask "What is it?" Tom helps a homeowner repair a cracked plaster and lath wall in her daughter's bedroom.

Richard repairs an old steam radiator that squeals and leaks. The guys ask "What is it?" Roger helps a homeowner prepare his raised garden beds for a long, cold winter.

Tom helps installs basecap molding. Electrician Allen Gallant shows host Kevin how to purchase electrical wire by the foot. The guys ask "What is it?" Roger shows a family how to collect sap from a maple tree and turn it into maple syrup.

Richard Trethewey removes a baseboard heater to prepare for a complete remodeling of his bathroom. Richard returns to help the homeowner install radiant heat. The guys ask "What is it?" Painting expert Jim Clark helps a homeowner prepare his aluminum siding for a brand-new paint job.

Master electrician Allen Gallant installs track lighting. The guys ask "What is it?" Richard makes a house call to help homeowners quiet their noisy baseboard heaters.

Richard examines a viewer's corroded copper pipes and identifies the source of the corrosion: a rusty hot water heater. The guys ask "What is it?" Tom helps a homeowner replace the worn-out weather stripping around his drafty kitchen door.

Tom installs a new storm door. The guys ask "What is it?" Roger helps Kevin choose the right garden tools for his spring cleanup.