The roof is leaking after installation, it is an indication of more serious issues. Make sure that your contractor knows how long ago the roof was installed. It could impact the investigations into the cause. Can a roof leak be solved from the inside? A few can, however, others need outside help. Your contractor knows which approach is best So, talk to them about it. It is possible to get all the information you need, including an estimate on how much it would cost. 3wt5kx45g9.