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Professionally done brick repointing can last 20 to 30 years, sometimes longer. However, the exact lifespan depends on several factors, including the quality of the mortar, the skill of the mason, and exposure to weather. If you live in an area with harsh weather or frequent freeze-thaw cycles, you may need to repoint more often. Repointing that is done as a DIY project may only last 10 to 15 years. It's time to repoint when you notice signs of mortar failure, such as crumbling or missing mortar, holes, or vines growing between the bricks. Regular inspections can help you catch these issues early.

Modern brick homes have a brick facade over standard framing and sheathing, so the brick offers minimal added structural stability. A home with traditional brick construction is more durable than a stick-built home, as the double-layer brick walls and rebar resist higher lateral wind loads and support heavier loads up top, as well.

To stain brick, you should use a product specifically formulated for brick, concrete, or other masonry surfaces. These stains are designed to penetrate the porous surface of the brick and bond with it. This is different from paint, which sits on the surface and is prone to peeling, flaking, and trapping moisture that can cause damage. Water-based brick stains are often recommended because they are easy to apply, even for DIYers, and they allow the brick to breathe. Avoid using regular paint on brick, as it will not adhere properly and can lead to future maintenance problems.

When painting brick, each application method has pros and cons. Spraying is much faster but may not penetrate the porous surface of the bricks. Rolling is effective for getting paint into the bricks but doesn't work as well on the mortar. Brushing is very time-consuming and also won't penetrate beyond the surface. For the best results, a combination of spraying and rolling is often recommended. If you use a roller, choose a thick option (at least a half-inch) and ensure the paint gets into all the crevices for even coverage.