@ Limbsandleaves Thanks for your question. We typically make grout lines no larger than 1/8". We only use an epoxy grout mixed with Soapstone dust. We use our own stone remnants and turn them into powder. Canadian Soapstone contains the highest talc content of other Soapstone varieties and makes the grout stain proof. Talc is non-porous. We have Soapstone dust available for purchase, you can reach me at spencer@canadiansoapstone.ca.