still for framstellning of wall and rendering / plastering, which contains a new type of conventional and lime and / or cement jemte water hardnande binder and which has high resistance.

摘要

The invention refers to a process for the preparation of a hydrofobous building material containing a ballast material and a binder added or formed in connection with the manufacture. At least part of the ballast material is or is made water-repellant and is admixed with the rest of the ingredients of the building material, the amount of water-repellant ballast material and the grain size thereof being adapted so that the water-repellant characteristics of the building material is brought to an acceptable level while maintaining a sufficient wet vapor diffusion ability.