Has anyone used the Powerwool exterior insulation yet?   
      Spec’s all look the same to Comfortboard for flammability and water resistance,  except it is a fair bit stiffer, cheaper and readily available in my area.   We did a project last year with 4″ of comfortboard 80 on the walls and had to get use to the product a bit for setting the rain screen nice and straight.  
    I love the Comfortboard products but really like the thought of a stiffer mineral wool product.  Hesitant to change since it hasn’t been on the market long but looks to meet all the ASTM testing.   

   Would love to hear any feedback.