I have gotten mold in window frames of an indoor swimming pool room.
Replacing the windows is expensive. I have some extra waterproofing substrate
which is rated swimming pool waterproofing and outside use. The material can be
painted and forms a thick coating (much thicker than regular paint). I am
thinking of coating the window frames and put ceramic or stone tiles for nice
surface inside and outdoors.. So I'm in effect encasing the old wood frame.

Are there any problems to above plan? What will happen to the mold? Will it stop
due to lack of water and air?