Porcelain tile on OSB
#1
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Porcelain tile on OSB
Hi all,
I am building a bar in my basement and instead of a brass foot rail/rest, I built a step out of framing lumber and covered it with 3/4 inch OSB. I want to cover it with porcelain tile. My thinset directions says do not apply over OSB. It's solid and should stay dry. Can I use premixed wall mastic to lay the tile on the step?
Thanks,
Bsmtdweller
I am building a bar in my basement and instead of a brass foot rail/rest, I built a step out of framing lumber and covered it with 3/4 inch OSB. I want to cover it with porcelain tile. My thinset directions says do not apply over OSB. It's solid and should stay dry. Can I use premixed wall mastic to lay the tile on the step?
Thanks,
Bsmtdweller
#3
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Either use cement board or an isolation membrane over the osb. You cannot set tile directly to osb, it is far to unstable. Don't use mastic (anything premixed in a bucket) on floors no matter what the instructions say. You can do a search for the mastic nightmares if you like. Use a modified thinset on cement board for floors. See manufacturers instructions for thinset type if you decide to use an isolation membrane.