Floating click-together tiles seem like the perfect DIY solution—until you lift a corner three months later and find thriving mold colonies underneath. The very feature that makes these tiles convenient, their sealed interlocking fit, creates a moisture trap that can colonize your entire subfloor in weeks.
After years of battling mold and moisture, one homeowner learned the real culprit wasn’t a faulty fan or hidden pipe damage—it was something so obvious it had been overlooked entirely. A plumber’s two-minute assessment revealed a solution that costs almost nothing but changes everything.
That satisfying wet-finger swipe along fresh silicone sealant feels professional—but it’s quietly creating a hidden groove that collects water, soap scum, and mold spores. A properly sealed joint requires a convex profile, not concave, and there’s a better way to finish the job.
Mold can quickly take over damp, poorly ventilated homes. Learn Grandma’s trusted tips to stop mold growth and keep your indoor air fresh all year long.
