The term lightweight is relative to a particular product category. It does not establish that a tile product is suitable for any existing roof structure. Product-specific weight and the building's condition must be considered together.
What to do next
Ask the project team who will evaluate structural suitability and what documentation supports the decision. Compare the full proposed roof load, including related layers. Avoid accepting a generic weight label as a substitute for a property-specific assessment.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.