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-   -   Trafficmaster ceramica over damaged floor. (http://www.diychatroom.com/f5/trafficmaster-ceramica-over-damaged-floor-136132/)

sgbotsford 03-06-2012 01:22 AM

Trafficmaster ceramica over damaged floor.
 
I have an old house that shifts. Since I am not about to replace the foundation, I'll live with it, but large areas of ceramic tile are not in the cards.

Last fall we had a leaky drain under the kitchen sink that went undetected. When the original floor was laid, it was done after the cabinets were in. There was no protection for the porridge board under the sink.

I striped out the base of the cabinet, scraped the porridge off the floor, and set a fan to dry for 3 weeks. That at least kept the mold down.

Now I'm redoing the floor.

Tracking down the water damage has exposed about 60 square feet of floor -- one whole sheet and a bunch of small rectangles. The unaffected parts of the floor are covered in sheet vinyl, which aside from some nicks and a color that shows every dog track, is in pretty good shape.

I want to redo the floor in ceramica. From talking to friends in the reno business, it's cheap, really durable, and stiff enoungh to not telegraph every irregularity.

But now I need to fill the voids where the porridge board came out.

I figured on doing this:

The original particle board was 3/8. = 0.375" The orignal vinyl varies what with the glue layer, but where I've measured vinyl + PB is 440 to 470 thou.

I figure on using 7/16 sheathing grade OSB (tolerates non-continuous water exposure to fill in. 7/16 = 0.438. Put in down mesh side up. (reverse of normal) The mesh side never spalls chips.

This will leave me with a wooden surface and one that is all points.

Now apply a cement based floor leveling compund. Trowel into the texture. apply more as needed to feather up to the vinyl.

I can find no mention of SLCs on Home depot's site for use with this. They do, however say that cement requires a primer. I figure this too will need a primer. What can/should I use to prime the SLC?

Is my whole approach wrong?

joecaption 03-06-2012 01:35 AM

For a short ansewer yes most of what your suggesting to do is wrong.
Someones installed all the wrong subflooring and underlaymnet for a floor that's going to last and come out smooth.
Cut it all out and lay Advantech 3/4" T X G with constrution adhesive of the floor joist. Screw it down to the joist with ceramic coated decking screws.
If your really interesting in doing it right come on back and someone will help you.

sgbotsford 03-06-2012 01:54 AM

Look: I make about 17 K a year. I can't afford a 50 K kitchen reno. The particle board was on top of 5/8 T&G plywood on 2x12 joists on 12" spacing. The plywood is in fine shape. I'm not about to strip 500 square feet down to the joists just because 60 square feet of particle board got wet. What are the usual practices when a section of floor is water damaged?


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