Recommended insulation levels

Insulation · The Basics · printed page 233 (PDF page 234)

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Book index entries

Insulation – Levels – Recommended Recommended Insulation Levels Insulation – the Basics

Text in the illustration

(simplified & approximate)
attic
R-30 to R-50 (US)
R-40 to R-60 (CAN)
walls
R-13 to R-25 (US)
~R17 (CAN)
R-13 to
R-38 (US)
~R-27 (CAN)
floors over
unheated
spaces

Generated explanation

A schematic house section shows recommended insulation levels at the attic floor, exterior walls, and a floor over an unheated space. Pink insulation symbols trace these parts of the thermal enclosure, while the sloped roof above the attic is not shown insulated. The attic recommendation is R-30 to R-50 for the US and R-40 to R-60 for Canada. Wall recommendations are R-13 to R-25 for the US and approximately R17 for Canada; floors over unheated spaces are labeled R-13 to R-38 for the US and approximately R-27 for Canada. The illustration explicitly identifies these recommendations as simplified and approximate.

Components

attic attic floor insulation exterior walls wall insulation floor over unheated space floor insulation sloped roof intermediate floor support post footing

Materials

insulation

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