TABLE 8 - ANTIFOULING COATINGS FOR RIGID SURFACES 



Cost/Ft2 



Coating System 7 



Coating System 8 



Coating System 9 



Navy Formula 121 



(MIL-P-15931) 



Cuprous Oxide 



Paint 



DTNSRDC 1020 

 (Specifications 

 Being Prepared) 

 Organotin Paint 



Antifouling 



Rubber 



Organotin 



Sheeting 



$0.40 



$0.60 



$3.85 including 

 cement 



Lifetime 



2 yr 



2 yr 



5 yr 



Effectiveness 



Broad spectrum 



Broad spectrum 



Broad spectrum 



Environmental 

 Impact 



None 



Very slight 



Very slight 



General 



Description 



Conventional 

 single package 

 paint 



Conventional 

 single package 

 paint 



80-mil-thick black 

 rubber sheeting 



Availability 



Readily available 



Made according to 

 contracts 



Proprietary 

 product 



Application 

 technique 



Sprayed or rolled 



Generally rolled 



Cut to size, 

 cemented, and 

 trimmed 



However, organotin paints, such as Navy Formula 1020A, must be used if 

 aluminum is present in any structural capacity. Organotin antifouling 

 sheeting material such as No-Foul, manufactured by B.F. Goodrich Company, 

 also is recommended, particularly where longer service life is necessary. 

 Greater detail on antifouling measures for GRP structures is available in 

 a separate section. 



Antifouling Coatings for Rubber and Other Flexible Surfaces . Rubber sur- 

 faces, such as neoprene, for the cold water pipe can be laminated with a 

 flexible antifouling sheeting. It also can be painted with a flexible 

 antifouling paint if it can be refurbished every 2 to 3 yr. These coatings 

 are described in Table 9. 



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