Good Day Tim,
I’m a trained artist who wants to create some carved plaster accents for my garden. The garden is being built to resemble a ruined Tuscan castle, and I’d like to add decorative embellishments that I carve myself. Unfortunately, I can’t find anything on plaster formulae for exterior use, other than wall finishes, which isn’t what I need at all. Can you help?
Mark
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Mark,
The plaster experts in the USA happen to be the folks at USG Corporation.
But I think you will have far greater and more long-lasting results if you use clay. The key of course is to have these carved finished art pieces fired in a kiln. Use the right clay, fire it at the right temperature and time and you will have objects that will last hundreds of years in all sorts of weather. This is exactly what terra cotta trim is on old buildings and the like.
Tim Carter
www.askthebuilder.com
W3ATB