To determine if your roof is strong enough to support the weight of solar panels, it is recommended that you follow these steps:

1. Investigate and document the structural type of the roof: Find out what materials your roof is made of, such as concrete, wood, or metal. Different types of roofs have different load-bearing capacities and installation requirements.

2. Find architectural design documents: Review your house architectural design documents or consult a professional architect to find out the design load carrying capacity of the roof, which will help you determine whether the roof can withstand the weight of solar panels.

3. Ask a professional for a structural assessment: If you are unsure about the structural capability of the roof, it is best to ask a professional structural engineer for an assessment. They can provide exact load-bearing capacity and recommendations by examining elements such as roof beams and load-bearing walls.

4. Consider weight distribution and uniformity: In addition to the overall weight, consider the weight distribution and uniformity of solar panels. Ensure that the weight of the panels is evenly distributed on the roof to avoid local overload or instability.

5. Follow the manufacturer's installation guidelines: If you have determined that the roof can support the weight of the solar panels, make sure to follow the installation guidelines and requirements provided by the manufacturer. These guidelines will include details such as appropriate solar brackets, bolts and fasteners to ensure safe and reliable installation.

Please note that in order to ensure safety and compliance with local building codes, it is recommended to consult a professional before installing solar panels and to follow relevant laws and regulations.