81%

better grip on the nails-than wood!

Results of actual tests on nail-pull by two of the country s foremost engineering laboratories, show an average of 139.9 pounds required to pull a nail out of Featherweight Nailing Concrete, as against only 77pounds for wood.
This exceptional nail-gripping power is your assurance that Featherweight Precast Nailing Concrete Slabs will hold the ornamental roof more securely than any other material you could possibly use. The original uniform appearance of the roof is always maintained, regardless of wind pressure and weather.

Teatherweight Nailing

CONCRETE ROOF SLABS

have special nailing surface cast integrally — take the nails easily—are light in weight to save roof steel—have new insulating value—are permanent, fireproof, no-maintenance. They are in use on prominent public and private buildings everywhere—Government buildings as well as others.

Catalog and Roof Standards on request.
Made, Laid and Guaranteed by
Executive Offices: 608 South Dearborn Street..........................Chicago Plants Near CHICAGO - NEW YORK - PITTSBURGH - BIRMINGHAM FOR OVER A QUARTER CENTURY