Hi Michael, Thank you for your interest in one of our products. This particular product is made out of gypsum (the same material as drywall is made out of). So it is not designed for outside use. But depending on the exact location, and the way you will treat it with coatings of sealants, you could make it work. My best answer would be: if you think normal drywall (sealed/coated) will last at the spot you want to apply it on, than this material will last there too.

When will these be back in stock? Thank you.