The most common material used in masonry projects, bricks are essentially any material that is mixed with water, pressed into a mold, and then fired in a kiln until the desired strength is achieved. Modern bricks in the industrialized world are usually made from a mix of clay, sand, and trace amounts of other materials such as lime and iron oxide. Because of the varying materials and methods that can be used to create them, bricks come in a wide variety of colors and types. Because of this, it can often be difficult to find exact matches when adding to or repairing a brick structure. If you’re looking for a contractor to perform this kind of job, make sure to discuss the possibility of matching the existing bricks before work begins. Mortar, on the other hand, can be blended to match an existing structure. A skilled contractor should be able to custom blend the mortar to your satisfaction.