text: Usually for all building materials and products the material is given ratings by both the Canadian Standards Association (CSA), which products are tested using the Association of Standard Testing and Materials (ASTM).
  
  The ASTM specifies exactly how the product should be installed even down to the spacing of screws, etc for certain materials.
  
  They determine the flame-spread rating for the material in its final assembly and the building codes specify what is the min. flame spread rating permitted for most building types and installations.