My air handler closet has OSB to ceiling and wall. Air samples came back high for cladosporium and aspergillus. Can I paint this directly to the OSB or do I need to apply AFM Safe seal and/or�AFM SafeCoat Transitional Primer before Caliwell?
Caliwel Industrial Mold and Mildew Inhibitor
Paints & Primers
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Open Aug 23, 2025 - 12:06 PM
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Answer
Aug 26, 2025 - 11:38 AM
The manufacturer recommends one coat of AFM Transitional Primer first and then applying two coats of Caliwel over the top.
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Caliwel Industrial Mold and Mildew Inhibitor
A zero VOC, antimicrobial wall paint for behind walls, crawl spaces, attics & basements
Caliwel Industrial is a revolutionary, multi-patented, zero VOC, antimicrobial paint that effectively and responsibly resists the growth of mold, mildew, algae, fungi and odor causing bacteria on contact...
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