The answer to 'ridge vent sagging' is that a sagging ridge vent is often caused by poor installation, structural issues, or weathering over time. Symptoms include a visibly drooping or uneven ridge vent, which can lead to leaks and reduced ventilation. To fix a sagging ridge vent, you may need to re-secure the vent, repair any underlying structural problems, or in some cases, replace the entire ridge vent assembly.
Homeowners can sometimes address minor sagging by tightening fasteners or making small adjustments, but significant issues with the ridge vent or roof structure should be evaluated by a professional roofing contractor. Attempting major repairs without the proper skills and tools can lead to further damage or safety hazards.