Replies

1. 
   Aaron_J._Harvey | Mar 07, 2000 03:09am | #1

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   Alois,
   If none of the concrete gurus are going to weigh in on your question, here's my two cents: concrete slabs should be insulated with extruded polystyrene (XPS), commonly seen as pink or blue boards by Dow-corning et al. There are varying densities; make sure you use a higher one, either 15 or 25 psi (not sure when to use which). The perimeter of a slab is probably the most critical area; it will lose heat to the outside most readily. The slab / footer / wall juncture should be carefully analyzed. In my mind, insulated concrete forms would be the only way to build in your climate. See ICFWEB.COM for more info.

   Bonne chance

   Aaron

2. 
   alois | Mar 07, 2000 03:11am | #2

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   I am planning to build a 33X33 house on a concrete slab in Quebec, Canada (Very cold climate) Any advice on how I should insulate the floors?
   Thanks.