Replies

1. 
   JohnT8 | Sep 21, 2006 08:42pm | #1

   Yes.  If you plan on spending time out there in the winter.

    

   jt8

   "Success is not the key to happiness. Happiness is the key to success."  --Albert Schweitzer

2. 
   piko | Sep 23, 2006 07:45am | #2

   Definitely...but use the Styrofoam rated for vehicular traffic.  2" will about do it, on top of 3" compacted sand. After all, what's the point of heating the space only for the heat to drain out thru the floor?

   BTW - A vb goes over the foam before the conc.

    

1. 
   wdsnow | Sep 23, 2006 01:36pm | #3

   My thought was that since the foundation walls were so well insulated, and the garage will only be heated to less than 50 degrees, the difference between ground temperature and air temperature would be minimal. If so, it might be like insulating interior walls. Plus, I have to dig out that extra 2' mostly by hand!

1. 
   piko | Sep 23, 2006 06:12pm | #4

   In my work as a renovator I have often been asked to convert garages into workshops, studios, or even accommodation. Do the insulation now - if not you, someone else will benefit.

    

    

   Edited 9/23/2006 11:13 am by piko