What to Check First When You Find Bathroom Surface Mold on Grout and Caulk

https://drywalljournal.unionquill.com/posts/what-to-check-first-when-you-find-bathroom-surface-mold-on-grout-and-caulk

Before scrubbing mold off grout or caulk, first check if water's getting in from a leaky pipe or poor ventilation. Mold on caulk often means the sealant's failed and needs replacement, not just cleaning. For grout, look for cracks or missing spots where moisture hides. Fix the moisture source first, then treat the mold, or it'll just come back fast.