I have an exising room that has engineered hardwood glued to the sub subfloor. The hardwood was damaged and I cant repair or find a match so I was thinking I would like to tile. However my floor joists are 24" on center and my subfloor appears 3/4". What should I do to make this floor acceptable to tile. I figure I will likley need to cut out the entire floor, but how to i make the subloor stiff enought w/24" spaced joists.