Replacing wood siding with brick is a popular project that many people do for aesthetic reasons. However, this type of improvement can also help improve the insulation of your home. Brick is one of the best insulators that is currently available when it comes to siding. This means that by putting brick up on the side of your house in place of wood, you will be able to improve the insulating properties of the structure. You will potentially be able to save energy as well as money on your utility bills, and you will make the extra cost of the brick back in the savings.