ARMY TM 5-5420-212-23
MARINE CORPS TM 08676A-23/2
Crocodiling or Alligatoring. A drastic type of chalking producing a pattern resembling the crocodile or
alligator hide (fig. 2-6). This kind of fault requires considerable preparation to remove the pattern down to a suitable
substrate for re-painting.
FIGURE 2-6 Paint crocodiling
Severe Cissing. Figure 2-7 shows this effect which is caused by painting over grease or oil contamination.
This may affect the base or undercoat or only the finish coat. In any event the whole of the area affected must be
cleaned down to the coating below the cissing. Figure 2-8 shows the same effect caused by applying incompatible types
of paint in this case a red oxide primer and a polyurethane based finish coat. This fault should be cleaned down to the
substrate and the correct paint specification applied.
FIGURE 2-7 Paint cissing contaminated surface
FIGURE 2-8 Paint cissing incompatible coatings
Blistering. Although this fault is obvious in appearance,(ie., dome shaped projections or blisters) the cause
may not readily be noticed. In any event the blisters will most certainly be retaining harmful agents, such as water vapor
or gases, against the substrate. For this reason alone blistered paint should be cleaned down to the substrate and the
cause eliminated. Figure 2-9 shows blisters caused by aging of the paint system and corrosion of the substrate.