What are the thermal resistance values recommended by RT2005 for the different walls and places to be insulated in a new house?
These values are taken from the following document:
Insulation: thermal resistance recommended by RT2005 and concern a dwelling placed in H1 climatic zone (the coldest).
Lost attics: Recommended resistance> = 6.5.
Converted attic isolated from the inside: Recommended resistance 6.0 to 6.5.
Converted attic isolated from the outside: Recommended resistance 5.5.
walls: Recommended resistance 2.85 to 3.15.
Floors on unheated premises: Recommended resistance> = 3.15.
Floors on crawl spaces: Recommended resistance of 2.40 to 3.50.
Floors on land-full: Recommended resistance of 2.40 to 2.75.
Roof terrace on concrete slab: Recommended resistance> = 3.45.
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