Ask This Old House

Ross Trethewey troubleshoots a Miami home's hot and cold spots. He conducts a home performance assessment to check airflow and offer solutions; AskTOH highlights metal fabricator, Shelby Barnhart, who worked her way up from a blacksmith apprentice to starting her own successful business; Mauro Henrique demonstrates how to remove a shellac finish that was improperly applied to a wood window trim.

Jenn Nawada speaks to a nonprofit that is creating urban pollinator gardens around Detroit. Then she helps a couple start an elevated herb garden bed. Sharing tips on soil preparation, planting techniques, and maintenance; Tom Silva gives a quick breakdown of impact drivers and power drills; Mark McCullough helps a homeowner remove his brick driveway apron and replace it with cobblestones.

Lee Gilliam travels to Austin, Texas to help a homeowner add drip line to her existing sprinkler spray head system by installing a new zone; Richard Trethewey breaks down the strengths and differences between PEX and copper piping; Nathan Gilbert repairs a door hinge that's fallen out of the old, stripped screw holes by using some wooden dowels, epoxy, and longer screws.

Nathan Gilbert transforms a homeowner's hanging bathroom medicine cabinet into a recessed medicine cabinet; Mark McCullough replaces a chimney crown that is causing water damage to a homeowner's indoor charcoal grill; Mark shows Kevin O'Connor some of the little pieces of history he's found while doing masonry work over the years.