The answer to 'why is my leak repair' is that there can be several common causes for a leaky repair, including improper installation, deterioration of materials, or damage to the pipes. Symptoms may include dripping water, moisture around the repair area, or water stains on walls or ceilings. To troubleshoot and fix the issue, you'll need to identify the source of the leak and take appropriate action.
For minor leaks, a DIY fix may be possible, such as tightening connections, replacing washers, or using sealant. However, for more complex issues like a broken pipe or a leak behind walls, it's best to call a professional plumber who can properly diagnose and repair the problem to prevent further damage.