10 
House & Garden 
Sheetrock is plaster that 
saws and nails like lumber 
The actual thickness of a 
sheet of Sheetrock is pi-inch 
of pure gyps um plas ter 
It makes tight-jointed , 
wind proof, fireproof walls 
It Nails and Saws Perfectly 
It seems incredible—something that contradicts 
Nature itself—yet the full truth of it is known 
to every builder who has ever used Sheetrock. 
Sheetrock is made from gypsum, and gypsum is 
a rock—yet Sheetrock can be nailed , like lumber. 
It is rock, yet it can be sawed , like lumber. It is 
rock, with all the solid rigidity of rock, yet it is 
toughly flexible, light and easy to handle. 
Made from the living rock, Sheetrock is fireproof 
—it will not burn, ignite or transmit heat; 
non-warping —it will not buckle or shrink; and 
permanent—it will last as only rock can last. 
Sheetrock is pure gypsum plaster, cast in sheets, 
and these broad, ceiling-high, smooth-surfaced 
sheets of rock are the ideal, economical wall and 
ceiling material for use in much new construc¬ 
tion and in all alterations and repairs. It comes 
all ready for use; the carpenter simply nails the 
Sheetrock to the joists or studding. It takes any 
decoration: paper, paint or panels. 
Your dealer in lumber or in builders’ supplies 
sells Sheetrock. Our new booklet, “Walls of 
Worth,” pictures its many economical uses. 
Write for a copy and for a sample of Sheetrock. 
UNITED STATES GYPSUM COMPANY, General Offices: 207 West Monroe Street, Chicago 
IVorld’s Largest Producers of Gypsum Products Sheetrock is approved by The Underwriters' Laboratories, Inc. 
SHEETROCK 
Reg. U. S. Pat. Off. 
The FIREPROOF WALLBOARD 
