The product was delivered super fast and packaged perfectly. Application was simple. I simply poured the bottle into a sprayer and applied to my outdoor chimney brick. This stuff was a life saver. I discovered some water in my basement under the chimney and realized that some of my bricks were deteriorating. I caulked the larger splits but i was worried about the pin holes. I did my research and this product was the winner. I applied two coats, waited for a big rain and the exterior water just rolled right. No water in the basement. Great piece of mind, great product.