I'M NEW TO THIS AND WAS WONDERING IF THE CHEMICALS USED TO CLEAN, BRIGHTEN,STRIP . WOULD HARM OR DAMAGE VINYL OR SOME OF THE OTHER MATERIALS USED IN THESE SO CALLED MAINTENANCE FREE DECKING MATERIALS. I HAVE A DECK THAT NEEDS TO BE CLEANED AND STAINED. HOWEVER THE DECK FLOORAND STEP TREAD'S ARE...