Over at The Last Straw blog, Jeff Ruppert has posted a review of Making Lime Mortars, the first of a four-disc tutorial offered by St. Astier Natural Limes. Perhaps the thing I like best about the review is that it doesn't get into the whole "Why use lime" conversation... it respectfully assumes that you already know.
But in case you don't know, here's most of the product description for St. Astier's natural hydraulic lime from GreenSpec:
St. Astier Natural Hydraulic Lime, or NHL, is a 100% natural product that has been in production since 1851. St. Astier NHL Mortar is widely used in the restoration of old buildings. This natural hydraulic lime mortar imported from France allows stone to "breathe" naturally. Used in construction as plaster, stucco, mortar, and paint, its high level of vapor exchange and mineral composition can help reduce the risk of mold development and dry rot. NHL products are highly permeable, elastic, low shrinking, zero VOC, self-healing, and recyclable.
