I live in a 130 year brick home that was sandblasted 40 years ago, and moisture comes through the walls. I coated it with a 5% silicone solution 14 years ago, called cambie. I need to do this again, but can't find anyone who carries this. Does anyone have any suggestions where I find this product, or something similar? I apply it by hand with a hand held sprayer, brick by brick. Thanks.Fred