The ceiling stain came back. Again. A roofer patched two seams in March, a handyman caulked the skylight in June, and the drywall crew has now painted the same corner three times. Every fix targeted the spot where water showed up, and every fix missed the spot where water got in. Meanwhile the invoices kept stacking and the stain kept spreading. That gap between symptom and source is where a professional leak detection company earns its keep. Once electronic testing enters t