Uploaded May 2025 | Updated September 2026, 2 weeks ago
Jim writes in to the FHB Podcast with a couple questions about spray foam. He’s building a house in climate zone 6a, and everyone he speaks to encourages him to use spray foam throughout the home. So much so that Jim is “convinced they put it on their breakfast cereal.”
To start, he wonders why a contractor would want to use closed-cell spray foam under a roof deck if the space is not conditioned. Next, he asks if it makes sense to flash and fill a wall assembly comprised of LP SmartSide, rainscreen, Zip R-9, 2x6s, a smart vapor retarder, and drywall with 1.5- to 2-in. closed-cell spray foam. The podcast crew weighs in.
Listen in to the discussion or tune into the full episodes on your favorite podcast platform ⬇️
Apple music: podcasts.apple.com/us/podcast/the-fine-homebuilding-podcast/id1127408595
Spotify: open.spotify.com/show/54IyOSRiw5eEXkr0Mt7gtZ
If you have any questions you would like us to dig into for a future show, shoot an email our way: FHBpodcast@finehomebuilding.com.
Read every issue of Fine Homebuilding Magazine:
finehomebuilding.com/magazine
Connect with Fine Homebuilding on social:
Instagram: instagram.com/finehomebuilding
Facebook: facebook.com/FineHomebuildingMagazine
X: twitter.com/fhbmagazine
Pinterest: pinterest.com/fhbmagazine
Jim writes in to the FHB Podcast with a couple questions about spray foam. He’s building a house in climate zone 6a, and everyone he speaks to encourages him to use spray foam throughout the home. So much so that Jim is “convinced they put it on their breakfast cereal.”
To start, he wonders why a contractor would want to use closed-cell spray foam under a roof deck if the space is not conditioned. Next, he asks if it makes sense to flash and fill a wall assembly comprised of LP SmartSide, rainscreen, Zip R-9, 2x6s, a smart vapor retarder, and drywall with 1.5- to 2-in. closed-cell spray foam. The podcast crew weighs in.
Listen in to the discussion or tune into the full episodes on your favorite podcast platform ⬇️
Apple music: podcasts.apple.com/us/podcast/the-fine-homebuilding-podcast/id1127408595
Spotify: open.spotify.com/show/54IyOSRiw5eEXkr0Mt7gtZ
If you have any questions you would like us to dig into for a future show, shoot an email our way: FHBpodcast@finehomebuilding.com.
Read every issue of Fine Homebuilding Magazine:
finehomebuilding.com/magazine
Connect with Fine Homebuilding on social:
Instagram: instagram.com/finehomebuilding
Facebook: facebook.com/FineHomebuildingMagazine
X: twitter.com/fhbmagazine
Pinterest: pinterest.com/fhbmagazine
