Originally it was formulated as a blend of aereal lime, marble-dust and line-seed oil, blended when hot. The lime, through carbonation, in time would become as hard as a stone and the oil giving hydro repellence- prevented the salts from damaging the facade.
In its thousands of variations, it was manufactured almost in the same way through centuries. Today, with the discovery of hydro-soluble acrylic resins, suitable also to very humid environments, it is possible to reproduce Italian plasters with performances close or very close to the original formulation, looking to the future and coping successfully with the new materials and todays requirements in term of building techniques and pollution resistance.
Of course there are variations on this and that is one of the significant differences of a store bought "venetian plaster" and a professional grade.
There is a great new product by Adicolor called Venyse'. It is actually painted on and gives a similar look to VP. Great for the diy'er who hasn't honed their troweling and polishing skills yet. -Dan
Posts: 3 | Location: Chicago land | Registered: 17 February 2008