If you want to provide extra protection to your home then you should definitely go for the waterproof concrete because the can form a very durable, strong and impenetrable coating on the concrete surface. Water tends to settle down and they also enter the voids and cracks. This can weaken the entire base and balance of the wall or any other structure.
You should definitely try and understand the things which can go wrong if water tends to weaken these structures. Only then will you understand the importance of the waterproof concrete coating products. They also help in acrylic crack resistance. The best thing about concrete coating is that it holds fast to most materials like concrete, SIPs, polystyrene, and ICFs. You can ask your contractor about such materials and check if your home needs such protection. Some contractors also give discounts if you buy the raw materials in bulk yourself instead of going for the ones which they provide.