The Product
VIROC is a cement bonded particle board composed of wood particles and Portland cement. It is light gray in color and is flat and smooth on both surfaces. VIROC sizes are 4'-0" x 8'-0" and 4'-0" x 10'-0". VIROC combines the strength and fexibility of wood with the durability and resistant qualities of cement.

VIROC is manufactured in thickness from 6mm to 40mm (1/4" to 1 5/8"). Square edge boards are standard although other edge details are available (See pages 5 & 6). During its manufacturing process VIROC's wood content is mineralized with non-toxic chemical agents. These treated wood elements combine with the Portland cement matrix to add strength and felxibility, giving the panel significant structural characteristics plus those qualities contributed by the Portland cement: fire resistance, moisture resistance and resistance to rot and decay. VIROC's structural integrity makes it impact resistant and easy to handle. As a result of its mass, VIROC offers excellent sound attenuation.

The uniting of wood fiber and Portland cement produces a building panel which is non-toxic, does not contain hazardous volatiles and is silica, asbestos and formaldehyde free. VIROC does not present health hazards and is environmentally safe. VIROC is noncombustible (AST E-136) and has superior structural integrity. It will not delaminate in water and is dimensionally stable. VIROC may be sawn, planed, snaded, drilled, routed, nailed and screwed. VIROC is available either sanded or unsanded.

VIROC's outstanding features make it suitable for both exterior and interior wall construction, for floors, ceiling or as a general purpose building panel. The product is distributed in the United States exclusively by Allied Building Products Corp. of East Rutherford, New Jersey and stocked by Allied branches throughout the United States.
VIROC IS STABLE WHEN SUBJECTED TO WATER IMMERSION WITHOUT ANY SEALANT APPLIED TO THE BOARD.
VIROC'S PROPERTIES ARE NON-DIRECTIONAL AND PRESENT NO DIFFICULTIES WHEN INSTALLING REGARDLESS OF
PANEL ORIENTATION.