May, 1920 
What*s Behind Your Plaster? 
iX/'HAT kind of a plaster supporting base will be used in the walls and 
ceilings of your home? Will it offer a barrier to any fire that might 
happen to start, or is it combustible? 
Satisfy yourself on this point for the picture at the lower right tells what is 
likely to happen unless a nonburnable plastering lath be used. It reminds 
you, too, that nearly 90% of all fires start in residences and that about 15,000 
people are burned to death each year. The most satisfactory way of making 
your home fire safe is to have your architect specify. 
KNOBURN METAL LATH 
as a base for all interior and exterior plastering (stucco) 
KNOBURN Metal Lath makes every wall and ceiling a fire 
stop. Its small steel meshes firmly grip and hold the plaster 
even in the face of intense heat thus preventing the flames 
from reaching the wooden structural members and averting 
serious damage or the loss of the structure. 
You need KNOBURN also to prevent your plaster from 
cracking or falling, also from streaking. Any well informed 
architect will be glad to tell of other reasons for using KNO¬ 
BURN, or write for— 
Builder*s Book — Sent FREE 
Northwestern Expanded Metal Co. 
937 Old Colony Bldg. 
Chicago 
There is a warning here of the ever present danger when a 
combustible plastering base is used. 
