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painted or waxed as this drastically reduces their slip-resistant properties. To increase the traction on
sheet or deck tile covering, slip-resistant treads should be cemented directly over the basic deck
covering. Required materials are: silicon carbide treads, 6 inches by 24 inches, black, NSN 7220-00-205-
0389; or, 24- inch roll, NSN 7220-00-205-0390; and a beading sealer, NSN 8030-00-264-3886.
b. Installation. This deck covering does not require a separate adhesive because the back has a
pressure sensitive adhesive protected by a plastic liner. To facilitate liner removal, rub the rough surface
of a piece of the deck covering against the edge of the liner in the direction of removal. This will lift the
edge, and the liner can then be removed easily. Apply the tread or sheet to the deck and roll with a
weighted roller. To waterproof the edges, seal with beading sealer. When installing sheet material, leave
a 1/16-inch expansion space between adjoining sheets and between sheets and bulkheads of coamings.
Traffic can be permitted over the area after the sealer has dried hard.
c. Repair. Replace damaged treads as follows:
(1) Over steel or aluminum, remove the damaged sections by scraping or chipping and mechanically
abrade the deck to shiny metal. Reprime the deck and replace the treads as soon as surface is dry.
(2) Over deck tile or resilient sheet, remove as much of the tread as possible without damaging the
existing tile or sheet material. Replace with new treads.
D-8. Slip-Resistant Deck Covering.
a. General. Slip-resistant (nonskid) deck coverings are used aboard ship to provide safe footing for
personnel and a slip-resistant surface for vehicles and aircraft.
b. General purpose use interior and exterior types.
(1) General Purpose Use. A general purpose, abrasive-type nonskid coating is normally satisfactory
for most shipboard applications.
(a) The majority of nonskid premature coating failures are caused by either improper application or
application over a poorly prepared surface. Adhesion of nonskid materials, just as for other coatings, is
dependent upon the degree of surface preparation and the environmental conditions under which they
are applied. Application over a hot or cold surface will dramatically affect the cure time and workability of
the nonskid material. When this covering is applied on a hot surface (over 37.8C (100F)) the cure time
can be significantly decreased; on a cold surface (below 10.0C) (50F)) on the other hand, the cure time
will be significantly increased. Ideally, the nonskid system should be applied over a white or near-white
metal, abrasive-blasted surface, free from oil, grease, or other contaminants, and applied on a day when
the relative humidity does not exceed 60 percent and the surface temperature ranges between 18C and
29C (65F and 85F).
(b) In addition, the nonskid coating should be applied over an approved primer. For steel an epoxy
primer must be applied beneath the nonskid topcoat. The primer not only improves the adhesion of the
nonskid coating but also prevents rapid failure or undermining of the nonskid topcoat if it becomes cut,
pierced, or otherwise mechanically damaged.
(2) Deck Areas (Metal-Interior and Exterior). For metal deck areas, apply one of the following nonskid
systems:
(a) Sprayable type, Deck Covering Spray on, Non slip intended for use aboard ship where a slip-
resistant surface is needed, and on exterior walkways and weather decks. See Appendix B-7 for a listing
of non-skid.
c. Deck Preparation (Metal Decks). Many cases of nonskid coating failures have been the result of
improper surface preparation or application. The degree of adhesion of a nonskid coating is directly


 


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