Hi and thank you for using Just Answer.
Things to try: 1. Fill iron with tap water ... distilled water may cause leakage. 1a. If you have very hard water, dilute with 50% distilled. 2. Fill the iron while upright, then allow to fully heat before using.3. Use higher steam setting ... lower settings can cause leakage.4. Allow your iron to "recover" (i.e. build up steam) if you have a spray or "steam burst" button. Trying to use it too rapidly can cause leakage.Be sure to clean your iron according to your manufacturer's directions. Chances are, that means using a vinegar-water solution to break up any mineral deposits. You can find a helpful video, here: http://laundry.about.com/od/productreviews/qt/vincleaniron.htm. There could be some build-up that is causing it. If it still leaks, please let me know and we can move on. Thanks