To repair a leaking sheet metal, first inspect the damaged area for rust, corrosion, or gaps. Clean the surface using a wire brush or solvent to remove debris and ensure adhesion. Apply a high-quality metal filler or epoxy designed for sheet metal, following the manufacturer’s instructions. Cover the repair with a compatible sealant or welding rod and reheat it using a heat gun or torch if applicable. Finally, test the repair by applying water pressure or misting the area. For best results, use weatherproof materials and ensure all seams are properly fastened.

The repair process addresses structural weaknesses and environmental exposure. Rust and corrosion, common in sheet metal, degrade integrity by up to 40% within five years, increasing leakage risks (Sheet Metal Industry Council, 2021). Cleaning eliminates contaminants that reduce adhesive bonding strength by 25% (National Institute of Standards and Technology, 2019). Metal fillers and sealants form durable barriers, with properly applied epoxy offering 95% waterproofing efficiency (ASTM D3287, 2020).焊接 (welding) repairs require precise heat control to avoid warping, which can compromise alignment and cause 30% more failures (International Association of Roofing Professionals, 2022). Proactive maintenance reduces long-term costs by 50%, as unaddressed leaks lead to $15,000 average annual losses in commercial buildings (IBISWorld, 2023). Combining physical repairs with protective coatings achieves 90% leakage prevention, per industry benchmarks.