Sandra from Jackson,tn writes
Unfortunately, there is not a product that is able to penetrate through paint, stain or sealant that would absorb into the wood. To treat active mold and also protect against further mold from developing, treating all accessible wood surfaces with Bora-Care with Mold-Care is the best option. Any painted wood should be sanded to its raw state before applying per the product label.
Answer last updated on: 11/01/2018