Perimeter insulation / Discussions

...perimeter of the house? Just granular A sloped 1:30 like code states slope? or maybe put drainage pipe anyway 4" away from outside wall and 12" down.   The proper procedure for building slab on grade foundation starts with building it on a suitable base that won't heave and that has sufficient drainage. First I would r...

...perimeter skirt of insulation. Laying a footing and stem wall to get below the frost line is a building technique that dates back to a time before the advent of insulation, where dirt was the insulator. Now insulation can be the insulator.