I am sorry to hear about the water leakage from the flat above yours and the owner's reluctance to fix the issue. As per legal guidelines, the owner of the flat above is responsible for any damages caused by the water leakage. In this case, as you are residing on the first floor and are affected by the leakage, the owner of the flat above is liable to pay for the repairs.
However, if the owner is not taking any action, you have the right to take legal action against them. You can send a legal notice to the owner, asking them to fix the issue and pay for the repairs. If they still refuse to take any action, you can file a complaint with the local authorities or approach the court to seek justice.
In the meantime, to prevent further damage to your property, you may want to consider getting waterproofing done on your ceiling. Berger Paints scientific waterproofing products are known for their advanced technology and long-lasting protection against water damage. They offer a range of waterproofing solutions that can be applied to the affected area, preventing further leakage and damage.
It is always advisable to consult with a professional waterproofing contractor who can recommend the best solution for your specific needs. They can also help you with the legal process and assist you in seeking compensation from the owner of the flat above.
I hope this information helps you take the necessary steps to protect your property and seek justice. Best of luck with your efforts.