Malgus, The bricks are concrete three holes, if you try to drill with a hammer drill you better buy very good bits because it will eat them. Image of the brick that I had to pull from a wall.
Tolik, You are right, this house is built to last, it is 91 years old in Florida, how many hurricanes have gone though this house? All the window are not standard, it has many small windows. The last hurricane it lost one roof tile!