Mudster

It's your call, I'm a marble and Limestone importer, we supply mainly commercial applications, hotels, office complexes, high end apartment conversions etc. I spent 15 years as a stone fitter before I went into this business, if you asked me to fit this flooring, I'd walk away.

If you want your friends to fit it, by all means get them to, but get a written guarantee that they are responsible if it fails and they will repair at thier own cost, you'll need it.