Sheets are true N scale size common brick (2 1/2 by 7/1/2 inches) in a running bond. Note: if true Z scale size would be too small to see. Sheets cut from laser board and come in a neutral ivory color and are 1/64th inch thick (0.015). Sheets are 4 x 8 inches with a usefull area of 3.75 x 7.75 inches. One sheet per kit. This material takes paint well and the sample was painted with a spray can. To do the joints I used Plaster of Paris powder and rubbed it into the joints, then wiped the excess off with a dry rag.
You can use any white powder like flour or corn meal, then seal with a over coat of clear.