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Yes, it is essential to prime or seal a brick fireplace before painting. Brick is a porous and highly absorbent material, so without a primer, paint can seep into the surface, resulting in uneven coverage and allowing the natural brick color to show through. To avoid this, apply one or two coats of a masonry primer. The primer will seal the brick and provide a smooth, uniform layer for the paint to adhere to. Ensure the primer is completely dry before applying the topcoat of paint.

Yes, you can technically use a pressure washer to remove paint from brick, but it comes with a significant risk of damaging the brick surface. A high-power pressure washer can be fast but may leave the brick looking unsightly. The recommended method is to first apply a chemical paint stripper, following the product's instructions, and then use a stiff metal bristle brush or a pressure washer on a low-pressure setting to remove the loosened paint. Due to the risk of damage, it is often best to hire a professional who can use low-stress methods.

Most of the time, you don’t need to seal brickwork and can save that money for another area of home improvement. But if your brick is cracking or you live in an area with a lot of excess moisture (either in terms of rain or freezes), sealing can extend the lifetime of your home. But, make sure you use a breathable sealant, like siloxane, to allow the moisture to evaporate on its own.

Drilling into brick or mortar requires the use of a masonry drill bit. Masonry drill bits appear similar to standard drill bits except for the leading tip of the bit. The tip has a bulky carbide arrow-shaped end slightly larger than the rest of the bit shaft. Standard or high-speed drill bits designed for making holes in wood or metal don’t have the ruggedness or design shape you need to drill into brick. They may not go through the brick at all, and if they do, they’re more likely to overheat, crack, or dull before you finish drilling.