Porcelain tile over asbestos tile [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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Diane Patterson
09-01-2009, 07:27 PM
To install porcelain tile over asbestos tile in a 1954 pier and beam home, is a backer the best way to go. Thanks. Diane

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09-01-2009, 08:30 PM

Your asbestos surface isn't the best thing to tile over - not only does stuff not like to stick to it, but you are also relying on it being bonded well. Not a good combination for 50 yr old materials.

But that all is also not nearly enough to consider.

You need to fully evaluate the entire floor structure.

What's under the asbestos? How many layers of whatever?

And what's holding all that up? Joists w/ regular spacing? Or is this a really thick floor system over far-spaced beams?

09-02-2009, 05:27 AM
Most backerboard manufacturers approve installing their boards over VCT, so if you are trying to avoid removing the asbestos tiles, I think you'll be OK with that method. That said, you'd still want to remove any tiles that are not firmly adhered. Scraping up loose tile will not create an asbestos hazard if you keep the area damp and use a dust mask. Do not use any power tools for this.

Do tell us about the supporting structure and subfloor. Most post and beam houses on the west coast will be OK with ceramic tile, but we always want to check to be sure.