Leaking inflatable spa

Hi, welcome to TFP! I think the way the air chambers are designed you would have a difficult time finding a substance that would completely fill the chambers without destroying the spa in the process. Your best bet is to patch the leaks.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.