
This Old House
Illegal fireworks cause a fire in the triple decker just before COVID-19 strikes contractors put the house back together.

Illegal fireworks cause a fire in the triple decker just before COVID-19 strikes contractors put the house back together.

Final touches are added to the triple decker.

Reinstalling the upper cabinets hot water and heating shopping for appliances tile installation and window trim.

General contractor Tom Silva helps a pair of homeowners install a new sliding glass door Tom, along with host Kevin O'Connor, landscaping contractor Roger Cook and plumbing and heating expert Richard Trethewey ask, What is it?

Landscaping contractor Roger Cook helps a homeowner prune an overgrown evergreen hedge Roger, Kevin O'Connor, Richard Trethewey, and Tom Silva ask What Is It? Tom helps a homeowner install a tile backsplash in his kitchen.

Replacing a corroded nipple fitting on a water heater Tom helps a homeowner install a vented range hood in her kitchen he cuts a hole in the exterior wall, installs a mounting block, hangs the exhaust fan above the stove and connects the ductwork.

Tom and Kevin build a simple table from solid fir normally used for building decks, and Kevin works with a wood finishing expert to stain and finish it how to get rid of tree stumps using a gas-powered stump grinder the state of solar energy.

In this special program, the guys celebrate 300 episodes of "Ask This Old House" by looking back at some of their best moments and revealing some behind-the-scenes secrets.

Richard helps a homeowner replace a shower valve that mysteriously shuts off Tom shows how to patch a hole in baseboard Roger shares some tips for maintaining a lawn mower.

Roger helps a homeowner plant a low-cost, low-maintenance privacy screen using arborvitae, fastigiate white pine, lilac, and more Tommy demonstrates many uses for a speed square Richard uses new technology to seal ductwork from the inside.

Roger shows Kevin how to start plants from seed Richard replaces an outdoor hose spigot with one that will never freeze Tom builds a moveable kitchen island with Kevin.

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.

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.

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.

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.

Fixing the plaster damage sprinkler system shopping for appliances for all three levels of the house.

Working on the front door mineral wool insulation kitchen cabinets and counters working on three separate HVAC systems.

Tommy installs the shiplap using reclaimed granite, Kevin helps Roger's crew lay a second set of steps for the walkway Roberto finds and cuts a marble slab for the kitchen island Mark builds the cast stone mantel surrounding for the new fireplace.

Landscaping contractor Roger Cook travels to Baltimore to help transform a small urban backyard into a pleasant outdoor living space Tom shows Kevin some new ways to install fiber cement siding without creating a lot of dust.

Helping a homeowner repair her shower valve that had been installed backwards helping a homeowner rebuild her wobbly stair banister that was not built to code the materials for this project are available at home centers and lumber yards.