A Concrete Roof That Does Not Leak
Medusa Waterproof Compound
Makes all concrete impervious to water
The concrete roof of the Herbivora Building, at the Cincinnati Zoo, shown in this illustration, was made absolutely dry by applying a cement mortar coat containing Medusa Compound.
It will not affect the color, strength or setting of cement.
Write for pamphlet containing tests and describing its use.
Sandusky Portland Cement Company
SANDUSKY, OHIO
Beware of imitations and adulterations that are sold for less
than it costs us to manufacture
Spring Thaws and Summer Showers
melting snow or ice will not permeate basements, cellars or subways
Waterproofed
by the proper application of
Hydrolithic Coating
It has overcome waterproofing problems which other systems could not handle and is specified for and used upon the most important buildings east and west.
E. J. Winslow Company
We execute waterproofing contracts under a guarantee that guarantees.
Consulting, contracting and manufacturing
engineers for waterproofing.
138 Jackson Boulevard, Chicago, Ill.
AUXILIARIES: The Waterproofing Co., New York, Boston, Pittsburg