I'm an Engineer too. Army type though and I didn't figure this out until AFTER it happened. But I managed to get our numbers on and time will tell if they are stuck well.
So we'll see. In retrospect I think I suspected something like this would happen but I was up on the ladder putting the numbers in place and neglected to tell the wife to keep the stuff AWAY from the wet surfaces. So the front went on first and were OK. The rear not so much but looks good and we'll see.
Roger in NJ
" Democracy is the worst form of government. Except for all the rest"
Winston Churchill 1948
TAC - NJ 18