Why the shape of your mortar joint depends on where you live
In short: Masonry jointers do more than just make brickwork look finished. These tools are essential for sealing joints against the elements, with specific styles favored in different regions. From the convex curves of New England to the distinct grooves of the mid-Atlantic, the right tool ensures your home stays protected.
Masonry jointers are specialized tools used to slick mortar joints, a process that ensures they are properly sealed against the climate while providing a desired aesthetic finish. According to mason Mark McCullough, the choice of jointer often reflects regional building traditions. For instance, the convex jointer is a staple in New England, while the concave jointer, which leaves more mortar exposed, is more common in the South.
Geography also dictates other styles. The grapevine jointer, which creates a unique, distinct groove in the mortar, is frequently used throughout Pennsylvania and the mid-Atlantic region. Meanwhile, the flat jointer remains a standard choice across most of the country. When using a flat jointer, McCullough suggests holding it at an angle; this technique allows water to shed off the joint and onto the brick face below, effectively minimizing the risk of moisture infiltrating behind the masonry.
For more complex or repetitive tasks, specialized tools offer greater efficiency. The rat’s tail jointer features varying sizes along its length, making it particularly effective for stonework where the gaps between stones are inconsistent. Conversely, the skate jointer is designed for speed on long runs of masonry. It utilizes a central nail to maintain a consistent depth, allowing the user to drag the tool along the mortar and smooth the joint with the back end. These tools typically cost between $10 and $30, depending on the specific type and quality, serving as a practical solution for homeowners managing their own masonry maintenance.
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Sources
- Summary by Intellect · source: Comparing Masonry Jointers | Ask This Old House
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