Just remodeled the bathroom by adding Hardie backer (1/2") and travertine (1/2") with thinset for each. This resulted in a 1 1/4" build up for the floor level. In re-installing the toilet, I discovered there was no wax seal available to handle the raised floor. NO, I do not want to raise the toilet flange (it is glued and screwed anyway). So, the solution proposed as a thick wax ring with plastic extention on the flange and a typical wax ring on the toilet, then reinstall the toilet "hoping" the two rings would compress accurately. Seems to me that with all the remodelers adding travertine floors in bathrooms, someone would have a better solution such as an ABS ring (1/4") which could be added to the flange and the toilet to help make up the difference. Solution? Ideas? Parts sources??