Because we handle both tuckpointing and concrete construction at Bald Eagle, we often get asked about the difference between mortar and concrete. Especially, can one be substituted for the other? While it may seem like the only difference is how each is used, they each have their own very different properties; each specializing in its own area. Though both mortar and concrete are widely used building materials, they cannot be substituted for each other without compromising the integrity of a build. So what is the difference between mortar and concrete?