Exterior waterproofing is usually the preferred method of basement waterproofing. If you have an older home or are planning on finishing your basement then this is definitely something that you should consider. Over time the foundation of your home will experience wear and tear which can lead to moisture problems and even basement flooding. Investing in exterior waterproofing before you have a water issue can save you a very significant amount of money. If you already are noticing a water leakage problem in your basement, you should have it inspected and repaired as quickly as possible. Waiting will only increase the damage caused and make it more costly to fix.