Don't insulate embedded joists

Insulation · Basements and Crawlspaces · printed page 253 (PDF page 254)

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Book index entries

Embedded Joist – Don’t Insulate Insulating Embedded Joists Don’t Insulate if Embedded

Text in the illustration

insulating around embedded joists can lead to rotting
good air sealing with caulking is a better alternative
insulation
caulking
foundation
floor joist

Generated explanation

The illustration shows wood floor joists embedded in a solid foundation wall. Insulation placed around the embedded joist ends is marked with a red prohibition symbol, with a warning that this can lead to rotting. Caulking at the joint between the wood and foundation is identified as the preferred air-sealing alternative and marked with a green check. The drawing contrasts insulating the embedded ends with sealing the gaps around them.