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S20 E14, Mark McCullough fixes a sinking driveway drainage system
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How to Fix a Sinking Driveway Drainage System

Mason Mark McCullough helps a homeowner handle a sinking drywell forming a major depression in their driveway.

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How to Cut Stone with Hand Tools

Ask This Old House mason Mark McCullough demonstrates various techniques for cutting stone with hand tools.

S20 E9, Mark McCullough extends a patio
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How to Extend a Patio

If you’re looking to extend an outdoor patio but don’t know where to start, watch as mason Mark McCullough helps a homeowner expand her concrete patio area while creating a modern look.

S20 E6, Mark McCullough visits a brickyard
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How Bricks Are Made

Ever wondered how exactly bricks are made? From ingredients to color, mason Mark McCullough explains how bricks are made and what makes them unique.

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How to Repair Damaged Fireplace Brick

Ask This Old House mason Mark McCullough replaces a chipped brick in a fireplace surround.

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Home Inspection Nightmares | Crooked Chimney

Ask This Old House host Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, mason Mark McCullough, and carpenter Nathan Gilbert share more home inspection nightmares

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How to Install Stacked Stone Veneer on a Fireplace

Ask This Old House mason, Mark McCullough, helps a homeowner update her concrete block, wood burning fireplace with a stacked stone veneer and a slab of stone.

Mason explaining to homeowner how to use mortar as a brick hole filler.
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How to Fill a Hole in a Brick Wall

We show you how to fill a hole in a brick wall with mortar, matching bricks, and tools you can rent.

S20 E3, Mark McCullough demonstrates filling holes in brick
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How to Fill Anchor Holes in Brick

Mason Mark McCullough teaches Kevin O’Connor how to patch holes in a tough surface.

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How to Restore a Colonial-Era Beehive Oven

Ask This Old House mason Mark McCullough explains the history and function of Colonial-era beehive ovens and then restores one in a house built in 1750.