Im almost 100% sure these are not tile floors... They may be semco floors... I am putting semco in my house and there is an option to put lines to make seem like tile... I opted for no lines to look like concrete... I am in L.A. it is something new here... but you should check out http://www.semcomfg.com/index.php?p=11 if you are really wanting to achieve this look.
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Hall bath transition
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