Treat moldy areas & deal with mold on wood under paint

2/12/2021 (Permalink)

Clean areas that show signs of mold with TSP (trisodium phosphate) or TSP substitute mixed with water. Scrub affected areas with the solution until the mold and mold discoloration are gone, then rinse with clear water, and dry the surface with an absorbent cloth.

Mold growth under paint on a painted floor is a trickier issue. Your only recourse at this point is to remove the finish because paint creates a seal over the floor that traps water in the wood below. After scraping off the paint, scrub the wood with an abrasive cleaner, such as Barkeeper's Friend, or use a TSP-water solution with an added cup of ordinary laundry bleach per gallon of water. Dry the floor as described above after cleaning.

https://www.thespruce.com/how-to-save-water-damaged-wood-floors-1821661

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