The factory roof is one of the most important parts of the factory building, playing the role of shielding and protecting the factory structure below from harsh weather effects such as rain, sun, wind and storms. However, over time, due to the impact of the environment and operating factors, factory roofs inevitably show local damage, from small cracks, leaks to rust, peeling materials or structural deformation. If these damages are not detected and handled promptly, they can lead to a serious decline in the overall quality of the project, causing unsafety and higher repair costs in the future. This article is a project by SVG Engineering to inspect the factory, accurately assess the extent and cause of local damage on the roof, and propose effective and optimal solutions to restore quality, ensure longevity and stability for the project.