I would not use Kilz. Correctly take away the mould, fix the condition that caused it after which there is absolutely no need for an encapsulation or any biocide or Exclusive paint. Hi Corinne! I'm in the middle of a mould remediation, they usually used Sentinel 24/7 Zero Voc mildew https://ricardokdtnc.qodsblog.com/11348022/the-smart-trick-of-housing-pva-paint-that-nobody-is-discussing