Re water proofing an awning

mickysf

I need to do this before the season starts and having never done this before I have a few questions and just wondered if any folk out there can help.

Which product do you rate best?

How much should I buy for a standard sized awning? (3.8x2.5m)

Do I need different products for the different materials my awning is made of?

How best is it applied?

Should this be applied to bone dry material? 

Any other tips and advice would be most welcomed.