Heath Eastman explains why finish electrical work is his favorite stage of the job and how different light fixtures bring his work to life; Mauro Henrique demonstrates how to repair a crack in plaster; Mark McCullough raises a drywell in a driveway that is sinking below grade.

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Where to find it?
How to Repair Cracks in Plaster Walls
Mauro shares the best techniques for patching and repairing cracks in plaster walls. His go-to material is a flexible patch compound, Sheetrock® Brand [https://www.usg.com/content/usgcom/en...] Dust Control Patch and Repair Compound [https://amzn.to/3Ge6Evn], specifically used for stress cracks on the wall. Mauro also used fiberglass drywall tape 2”x 150’ (50mm x 45.72m) by Dynamic [https://bit.ly/3q8EjB7]

Understanding Wood Joints
Tom explained how to identify different types of wood joinery and why they’re used in woodworking.

Half-lap joint—Formed by creating two rabbet cuts, which requires cutting half of the end of the board. DOMINO DF Q-Plus by Festool [https://www.festoolusa.com/]

Half-lap butt joint—Formed by creating one rabbet cut, as explained above, and then placing the other board into the opening created by the rabbet cut. Hoffman—PDS 32 [https://hoffmann-usa.com/]

Miter Joint—Formed by creating two, opposing, 45-degree angle cuts on the ends of the board and then bringing them together, creating a 90-degree angle. Cut created using a Zeta P2 made by Lamello [https://www.lamello.com/]

Floating tenon joint (aka biscuit joint)—Formed using a biscuit joiner, a specialty tool that drills mortises wide enough to accept biscuits or tenons that are pre-cut and connect two boards with mortises together. Cut created using biscuit joiner, Top 10 by Lamello [https://www.lamello.com/]

Box joint—Formed by creating a series of cuts on each end of the board that create a castle or finger-shaped look. Cut created using Kreg Jig® K5 [https://www.kregtool.com/home]

How to Fix a Sinking Driveway Drainage System
Mark raised a drywell in a driveway that sunk below grade. After using a chipping hammer [https://amzn.to/3teorik] and chisel [https://amzn.to/3HNQ1Hm] to break away the sunken asphalt, Mark removed the grate and added gravel. He chose to use EZ Street ready-to-use asphalt [https://www.ezstreetasphalt.com/] and ProMasonry Type S Mortar mix [http://www.promasonry.net/] to level out the drywell.

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About Ask This Old House TV: From the makers of This Old House, America’s first and most trusted home improvement show, Ask This Old House answers the steady stream of home improvement questions asked by viewers across the United States. Covering topics from landscaping to electrical to HVAC and plumbing to painting and more. Ask This Old House features the experts from This Old House, including general contractor Tom Silva, plumbing and heating expert Richard Trethewey, landscape contractor Jenn Nawada, master carpenter Norm Abram, and host Kevin O’Connor. ASK This Old House helps you protect and preserve your greatest investment—your home.

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ASK This Old House | Patch Plaster, Sinking Drywell (S20 E14) FULL EPISODE
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