This is the single most dangerous misconception we encounter — and it leads to thousands of dollars in preventable structural damage every year across Perth homes. The truth is, a shower can be silently leaking for months or even years before any visible tile damage appears. Water travels through microscopic cracks in grout, failed silicone joints and compromised waterproof membranes — working its way behind tiles, into wall cavities and under flooring completely out of sight. By the time you notice bubbling paint, soft walls or a musty smell, significant damage has already been done.