No. On an average, solar panels add only 1-2 kg of weight per square foot of roof area. All roofs are typically able to withstand significantly more weight than this.
Also, when the Site Visit is done by an Oorjan representative, they will inspect the roof for robustness. In the unusual event of the roof not being able to support the weight of the solar system, they would be able to suggest reinforcement mechanisms that would make a rooftop system possible.
Rooftop systems are very durable, and have an average lifetime of 25 years. During this period, if roof work ever has to be done, the rooftop system can be easily dismantled and reassembled. So, future roof work is always possible.