As with any type of paving, there are several ways to lay tomettes, depending on the subfloor and the look you want. Here are a few practical guides to help you make the right choice and achieve the finish you are looking for. The guides below are in French.
A practical guide on the Linternaute website, describing a laying method using a special adhesive for terracotta.
A very comprehensive guide to traditional laying on a sand bed with hydraulic lime. The description of the method comes with many very clear photos.
> See the guide
> See the additional information
Another way to lay your tomettes, on a fresh lime mortar screed, with white cement joints.
The step-by-step laying of a tomette floor on a fresh screed, with rather wide joints: another type of finish for a tomette floor.
Many examples of how to lay tomettes can be found on DIY blogs and home improvement websites.