Re: Embarrassing question but need clarification!
yes, water shud reach the root of the hair....
and yes, if u do wudoo u can postpone the ghusl till later....
Sahih Bukhari: Volume 1, Book 5, Number 248
Narrated 'Aisha:
Whenever the Prophet took a bath after Janaba he started by washing his hands and then performed ablution like that for the prayer. After that he would put his fingers in water and move the roots of his hair with them, and then pour three handfuls of water over his head and then pour water all over his body.
Sahih Bukhari: Volume 1, Book 5, Number 285
Narrated 'Umar bin Al-Khattab:
I asked Allah's Apostle "Can any one of us sleep while he is Junub?" He replied, "Yes, if he performs ablution, he can sleep while he is Junub."