July, 1923 
19 
Sheetrock is the economical easy-to-erect, 
and permanent, Jireproof wallboard for 
new construction, alterations and repairs 
The actual thickness of a 
sheet of Sheetrock is fi-inch 
of pure gypsum plaster 
Good builders everywhere are using 
Sheetrock now for the walls and ceilings 
of residences costing upward of $20,000 
Popularity—the Greatest Endorsement 
The greatest endorsement of Sheetrock has come from 
the builders themselves. While last year they were 
increasing building in general by 40 per cent, they 
were increasing the use of Sheetrock by more than 
120 per cent. 
Enough Sheetrock went into New York State build¬ 
ing alone in the last twelve months to wall and ceil 
11,000 homes. A single great construction company 
this year is building from 800 to 1,500 dwellings, and 
in every one of them is using Sheetrock, the fire¬ 
proof wallboard. 
Sheetrock is the modern wallboard made from the 
world’s oldest material for permanent walls and ceil¬ 
ings. It is plaster cast in sheets. It makes rigid, 
non-warping, fireproof walls and ceilings at low 
cost. 
You get Sheetrock all ready for use. The carpenter 
nails it to the joists or studding. The result is an 
easily built, quickly erected and flat-surfaced wall 
that takes any decoration—wallpaper, paint or panels. 
Ask your lumber dealer or your dealer in builders’ 
supplies for Sheetrock. Write to us for a sample and 
a free copy of “Walls of Worth,” the booklet that 
pictures the qualities and uses of Sheetrock. 
UNITED STATES GYPSUM COMPANY, General Offices: 207 West Monroe Street, Chicago 
World's Largest Producers of Gypsum Products Sheetrock is approved by The Underwriters' Laboratories, Inc. 
SHEETROCK 
Reg. U. S. Pat. Off. 
The FIREPROOF WALLBOARD 
