Essential Building Science by Jacob Deva Racusin

Author:Jacob Deva Racusin
Language: eng
Format: epub
Publisher: New Society Publishers
Published: 2016-03-14T04:00:00+00:00

Thermal Performance Goals: How Much Is Enough?

Now that we’ve identified what makes up the thermal enclosure and some of the materials used in its composition, we must decide how much insulation we need, and how airtight our building needs to be. Let’s look at the questions you might ask in this regard, and how the answers might influence your R-value and airtightness specifications for your assemblies.

Table 5.6

Zone Number

International Climate Zone Definitions7

Thermal Criteria

IP Units

SI Units

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