RT2005, thermal resistances


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What are the values ​​of thermal resistances Recommended by RT2005 for different places and walls to insulate a new home?

These values ​​are taken from the following document:
Insulation: heat resistance recommended by the RT2005 and concern a housing placed in climate zone H1 (coldest).



lost roofs: Recommended resistance> = 6.5.

Attic insulated from the inside: Recommended resistance to 6.0 6.5.

Attic insulated from the outside: Recommended resistance 5.5.

walls: Recommended resistance to 2.85 3.15.

Floors on unheated rooms: Recommended resistance> = 3.15.

crawlspaces on floors: Recommended resistance to 2.40 3.50.

Floors-on-ground: Recommended resistance to 2.40 2.75.

Roof terrace on concrete: Recommended resistance> = 3.45.

More:
- insulation forum
- Download documents: home insulation and


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