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Unread 11-18-2020, 02:23 PM   #4
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Join Date: Nov 2020
Posts: 2
Thanks guys
My answer is based on reading this 120x20 cm, not mm.
sorry, I did mean cm, have corrected the original post.

I believe the joist are brick and pretty strong. Good to know that with a strong, flat underlay they should last.

With the base is there a difference between plywood vs the cement sheeting? I know plywood can have a bit of warp to it.

Also with grout size how small can you go?

Thanks so much again for all the advice!
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