I normally would wait until 48-72 hours before worrying about yeast, but I just brewed a Cream Ale and used S-05 dry yeast for fermenting only this time, I rehydrated the yeast instead of just pitching dry. Well, it's been 12 hours and typically with this particular yeast I see bubbling by now; there is none. The holder on the inside of the airlock isn't even raised.
Basically, I poured the yeast into some water I boiled in a pyrex measuring cup that I sanitized and covered with sanitized tin foil. I believe the temp. of the water was around 90 degress at that time. Let that sit 15 minutes, stirred with a sanitized spoon, then pitched into the wort.
What should I look for to determine if I need to re-pitch? Is it normal for rehydrated yeast to take longer?