I am employed by one of the largest waterproofers in northern indiana, National Waterproofing. beaver channel is'nt everyones solution there are a lot more cheaper options and your first is not to call Everdry Waterproofing they employ a lot of high pressure scare tactics to make the sale and sell you more than is required for an outrageous price. your best bet is to shop around check your local yellow pages. don't just buy without researching.