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A composition for a slurry for manufacture of acoustical panels includes one or more fillers, one or more binders, water and zinc pyrithione. At least of the fillers and/or binders includes microbial nutrients in an amount of at least 1% based on the dry weight of the acoustical panel. In another em

A composition for a slurry for manufacture of acoustical panels includes one or more fillers, one or more binders, water and zinc pyrithione. At least of the fillers and/or binders includes microbial nutrients in an amount of at least 1% based on the dry weight of the acoustical panel. In another embodiment of the invention, acoustical panels include a core having a plurality of opposing surfaces and being at least ⅛ inches thick. The core comprises the dried product of a slurry of fillers, binders and water. Zinc pyrithione is present in at least one of the core and a coating applied to at least one of the surfaces of the core.

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What is claimed is: 1. A composition for a slurry for manufacture of an acoustical panel comprising one or more fillers, one or more binders, water and zinc pyrithione, wherein at least one of said fillers and binders comprise microbial nutrients in an amount of at least 1% based on the dry weight

What is claimed is: 1. A composition for a slurry for manufacture of an acoustical panel comprising one or more fillers, one or more binders, water and zinc pyrithione, wherein at least one of said fillers and binders comprise microbial nutrients in an amount of at least 1% based on the dry weight of the acoustical panel. 2. The composition of claim 1 wherein said microbial nutrients comprise at least one of starch and paper. 3. The composition of claim 2, wherein said paper comprises post-consumer waste paper. 4. A mold-resistant acoustical panel comprising: a core having a plurality of opposed surfaces, said core comprising the dried product of a slurry comprising water, one or more fillers and one or more binders, said core having a thickness of at least ⅛ inch and wherein at least one of said fillers and binders comprises one or more microbial nutrients in an amount of at least 1% by weight of the acoustical panel; and, zinc pyrithione distributed through said core. 5. The acoustical panel of claim 4 wherein said zinc pyrithione is present in amounts of at least 100 parts per million on a weight basis. 6. The acoustical panel of claim 5 wherein said zinc pyrithione is present in amounts of from about 100 parts per million to about 1000 parts per million on a weight basis. 7. The acoustical panel of claim 4 further comprising zinc oxide. 8. The acoustical panel of claim 4 wherein said microbial nutrient comprises at least one of wood fibers, cellulose, starch and paper. 9. The acoustical panel of claim 8 wherein said paper comprises post-consumer waste paper. 10. The acoustical panel of claim 4 wherein said core comprises at least 2% by weight of said microbial nutrient. 11. The acoustical panel of claim 10 wherein said core comprises at least 10% by weight of said microbial nutrient. 12. The acoustical panel of claim 4 wherein said slurry further comprises at least one of calcium sulfate dihydrate or calcium sulfate hemihydrate. 13. The acoustical panel of claim 4 wherein at least a portion of said water has been drained from said slurry to form said core. 14. The acoustical panel of claim 4 wherein a coating is applied to at least one of said surfaces. 15. The acoustical panel of claim 14 wherein said coating comprises a second anti-microbial agent. 16. The acoustical panel of claim 15 wherein said second anti-microbial agent comprises a pyrithione salt. 17. The acoustical panel of claim 16 wherein said microbial nutrients comprise at least one of starch and paper. 18. An acoustical panel comprising: a core having a plurality of opposed surfaces, said core comprising the dried product of a slurry comprising one or more fillers, one or more binders and water, said core being at least ⅛ of an inch thick and wherein at least one of said fillers and binders comprise microbial nutrients in an amount of at least 1% based on the dry weight of the acoustical panel; and a pyrithione salt having a solubility in water of less than 0. 1% and being distributed through said core. 19. A mold-resistant acoustical panel comprising: a core having a plurality of opposed surfaces, said core comprising the dried product of a slurry comprising water, one or more fillers and one or more binders, said core having a thickness of at least ⅛ inch and wherein at least one of said fillers and binders comprises one or more microbial nutrients in an amount of at least 1% by weight of the acoustical panel; and, a coating comprising zinc pyrithione, wherein said coating is applied to at least one of said surfaces. 20. The mold-resistant acoustical panel of claim 19 wherein said zinc pyrithione is present in amounts from about 0.1% to about 1% based on the total coating weight. 21. The mold-resistant acoustical panel of claim 20 wherein said zinc pyrithione is present in amounts from about 0.2% to about 0.8% based on the total coating weight. 22. The mold-resistant acoustical panel of claim 19 wherein said nutrients are present in amounts of at least 2%. 23. The mold-resistant acoustical panel of claim 19 wherein said coating further comprises a film former. 24. The mold-resistant acoustical panel of claim 19 further comprising at least one of a group consisting of thickeners, defoamers, pigments, dispersants and preservatives. 25. A coating composition to be applied to an acoustical panel, said panel comprising at least 1% microbiological nutrients, said composition comprising water, a film former and from about 0.01% to about 1% zinc pyrithione. 26. A mold-resistant acoustical panel comprising: a core having a plurality of opposed surfaces, said core comprising the dried product of a slurry comprising water, one or more fillers and one or more binders, said core having a thickness of at least ⅛ inch and wherein at least one of said fillers and binders comprises one or more microbial nutrients in an amount of at least 1% by weight of the acoustical panel; and, zinc pyrithione distributed through at least one of said core and a coating applied to at least one of said surfaces. 27. A method of making an acoustical panel comprising: mixing a slurry comprising one or more fillers, one or more binders, zinc pyrithione and water, at least one of said fillers and binders comprising microbial nutrients in the amount of at least 1% by weight of the dry product; forming a panel; and drying the panel. 28. The method of claim 27 further comprising coating said panel after drying. 29. The method of claim 27 wherein said forming step comprises casting the slurry into a mold. 30. The method of claim 27 wherein said forming step comprises pouring said slurry on a porous support to form a wet basemat and dewatering the basemat. 31. The method of claim 30 wherein said dewatering step comprises applying suction to the basemat. 32. The method of claim 27 wherein said mixing step includes distributing the zinc pyrithione throughout the slurry.