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-Page 2 of 3-S. Decatur-June,2000-CSOS Inc. <br /> At the present time conservators of outdoor bronzes use two kinds of <br /> coatings: combination of microcrystalline waxes, or Incralac - an acrylic resin in <br /> organic solvents with BTA - a corrosion inhibitor added. Both of the coatings <br /> require maintenance. A wa�c coating has to be maintained at least once a year <br /> (approximate cost of an annual maintenance for the bronze is $1,600.00 to <br /> $2,000.00). An Incralac coating should be washed and waxed every other year <br /> (approximate cost $800.00), and removed, reapplied after 5 to 10 years <br /> (approximate cost $3,000.00 to $4,000.00). Waxes are easier to maintain, but <br /> Incralac gives better graffiti and weather resistant protection for a bronze. In this <br /> case Incralac and wax are good choices. The decision should be made by the owner <br /> based on the future maintenance program. The hot wax should be considered by <br /> the owner if it can be maintained on annual or biannual basis. A w� coating is <br /> more economical because it is easier to maintain. <br /> The above estimate is based on keeping the green color of the sculpture, if the <br /> owner wishes to change the appearance of the monument to brown this approach <br /> will be addressed upon of the request of the owner. In such a case historical <br /> evidence of the original brown appearance should be provided in order to justify this <br /> choice. <br />