Limewash can be removed from brick, but the method of removal will depend on how long the limewash has been on the brick. If the limewash has fully dried—which happens after about five days—you’ll need to use a diluted muriatic acid mixture to remove it. If there are multiple coats of limewash, you may need to apply the acid mixture several times to fully remove it from the brick.

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.

The best way to clean creosote from brick is to hire a professional chimney sweep. However, you can use a creosote log to remove excess buildup between cleanings. You can also clean minor creosote buildup using dish soap or vinegar mixed with water.

Use fire bricks for a brick pizza oven. These bricks are typically used for fireplaces and chimneys as they can withstand high temperatures from heat sources. If you attempt to use any other kind of bricks, it’s likely that this material will crack from such high heat exposure in the best case—and potentially explode and cause serious harm in the worst case.