[ryans1]

New to the site here and looking for some advice. I'm looking to refinish a sunroom floor with porcelain tile. Currently the floor in the room is split with half being concrete slab and the other half exposed aggregate. The concrete is somewhat new and the aggregate from what I can tell was put in twenty-five years ago when the house was built. How do I prep the floor for tile? Is the prep different for concrete than the aggregate? Can I lay tile right over it? Any info is appreciated. Thanks.

 

[Bud Cline]

Describe the "aggregate" portion.

Is this "aggregate" chattahoochee?

 

[ryans1]

I had to google "chattahooche" and from the images I saw I would say no. The half inch to inch aggregate in my floor are less exposed with 1/8" to 1/4" deep gaps between each stone. Hope this helps. Maybe i'll attach a photo if I can figure that out.

 

[Bud Cline]

Okay, that sounds like typical Portland cement with exposed ag.

If it is solid and not spalling or decaying in some fashion I see no reason you can't go over it. You would have to fill it first I suppose. There is more than one way to do that.

 

[Bud Cline]

P.S. I forgot to mention you probably wouldn't want to bridge the joint between old and new with a single tile. Need more info on that score.