Most leaks will show themselves very quickly, so if it's been several hours to several days, you should be ok. Good Luck and have fun.

Greg

: I HAVE JUST FINNISHED ROUGH PLUMING A BATHROOM WITH MANY JOINT,S. I HAD ONE LEAK WHICH I FIXED. IF NOTHING IS LEAKING NOW IS IT SAFE TO ASSUME THE SYSTEM WILL BE OK TO COVER?

: THANK YOU