I've been through a lot of effort creating a breathable Limecrete floor which will have limestone tiles as the finished surface.

The floor is for a kitchen so worried about staining the tiles but I don't want to reduce the breathability.

Does anyone know of a limestone sealant which will still allow the floor to breath? Seen a few manufacturers claim this in their product but would hate to mess this up after all the hard work.

Floor detail attached

Use a stone impregnator HG and Lithofin do them. Also ideally I'd use a decoupling membrane.

Have listed building consent to use a similar construction but have to reuse the original limestone flags. To seal it will be burnt mastic and linseed oil.