All Episodes

Mark McCullough travels to New Mexico to learn adobe brick making and repair an earthen floor. Tom Silva shows Kevin a faster way to cut miters on imperfect corners. Jenn Nawada revisits a garden she helped transform a decade ago and sees how it inspired even more backyard projects.

In the Season 48 premiere, 'Garden State of Mind,' This Old House takes on an 1893 Dutch Colonial in Essex County, New Jersey—complete with an octagon living room, a steam boiler worth preserving, and a kitchen where three layers of flooring hide structural sins.

A practical guide to rain-screen wall assemblies, from drainage and drying to bug screens, furring strips, and the details that matter before new siding goes up.

Why wedge-shaped cut nails grip differently from modern wire nails, where you are likely to find them, and what to consider before pulling them from historic framing.

In Walpole, a two-unit ranch gets a code-rated firewall, a shared hydro-air HVAC system, whole-house water filtration, and a cold-joint injection that makes old-meets-new basement walls honest. Then Kevin and Tom tour a finished attic ADU in Dorchester—proof that 700 square feet can feel like a yacht.

Charlie tours a Springfield trim factory, Tom explains why there should be air behind your siding, and the new deck gets composite tongue-and-groove boards. Plus: a kitchen mock-up that's smarter than it looks.

Tom Silva breaks down caulk types from latex to butyl, Richard Trethewey installs a garbage disposal with an air switch (and drills through granite), and Kevin O'Connor helps the young hosts of Toys and Colors build a dress-up closet with pocket screws and a miter saw.

HVAC gets targeted upgrades instead of a gut job, Charlie chooses closed-cell spray foam for the third floor, and Tom proves that proper window flashing is a lost art worth finding.

Mauro Henrique shows why speed beats any cleaner when paint hits the floor, Heath Eastman finally makes three-way switches click with a switch he built himself, and Nathan Gilbert and Lee Gilliam build a split rail fence that stops cars and looks good doing it.