[TheForge] insulated shop floor

[Loktr at aol.com]

In a message dated 3/28/2006 2:09:36 A.M. Central Standard Time,  
theforge-request at mailman.qth.net writes:

Soil is  a great insulator.  It's even better if it's dry.  Soil also has a  
high thermal mass that will hold heat. We normally insulate only the perimeter 
 of buildings at the footing to below frost depth.  Below that, there is  
very little value because of the ground's insulating value.  

This  perimeter insulation can be vertical or horizontal.  If it's 
horizontal,  it can extend inside or ouside the building line and works equally  well. 


Walt,  How do you insulate horizontally?  My situation is that I  have two 
layers of 4" concrete over three foot of sand.  I have had various  contractors 
tell me: bubble, insulate with 1" foam, dont insulate insulate only  the 
perimeter vertically.  I could not get the link to work either.
 
Ben