As Joshua Bremmerer states in sailuniverse.com, teak is nothing to be afraid of, as long as you follow some essential tips to take care of the material properly.
Teak is made kup of hard and softwood which can effect different methods of teak maintenance. High-pressure cleaners can destroy the softer elements as can hard brushes and powerful cleaning detergents. Rather, use a soft brush and if you clean weekly, all the better.
After cleaning teak, make sure you use a sealer. Read more.