Link to alliance4.fr website and the hemp and lime formula: https://www.alliance4.fr/solutions/isolation/enduits_isolants.html You can also find detailed tecnical documents, all the necessary materials and a quantity calculator for your project (not sponsored). Our modest knowledge on the subject comes from a lot of research: reading or watching videos. Here are a couple of channels that are sharing their experiences with hemp and lime and which have been extremely helpful to us: @larchipelle @MAKEDOGROW @rebatbio3800 @Stuc-et-platre @FaisonsleMur