This product is very user friendly, light weight, and looks like real slate/shale/sandstone.  I prepared the wall, by removing the original siding, placing tyvek paper and taping the seams for about one hour.  The next day, I installed the Genstone product (about 4 hours) to the porch walls with just 1 5/8" decking star screws and placing the sealant in the requested areas.  See for yourself in the photos.  Any homeowner can install this!