I have a inflatable sleeping pad that has a slow leak. It will blow up but will be flat by morning. I have not been able to find the leak. Any suggestions on how to find the leak so that I can patch it?
Partially inflate it then submerse sections of it under water squeezing it so that section is tight with air. If you see a bubble or two come out, you've found your leak.
Blow up the mattress, then take a spray bottle with a 20/80 mix of liquid soap and water and spray it down. If large bubbles don't immediately appear, press down slightly and the leak should show itself.