Uploaded August 2026 | Updated September 2026, 3 weeks ago
Bryan Uhler walks through the building science behind constructing an unvented crawl space, focusing on the proper sequencing of insulation, soil gas and vapor control, air sealing, and drainage. He explains how horizontal and vertical insulation work together to reduce thermal bridging while a durable membrane helps control moisture and radon. The discussion also covers variable vapor-permeable materials, seam sealing, dehumidification, and planning for mechanical systems and radon ventilation. Uhler emphasizes treating the assembly like a recipe, where product selection, compatibility, and installation sequence all work together to create a durable, conditioned crawl space.
Huge thanks to our episode sponsor, ISI Building Products. To learn more visit: vipercs.com
Resources Mentioned:
ISI Viper Double Bond Tape: tinyurl.com/32nynuct
ISI Viper CS Crawl Space Vapor Retarder: tinyurl.com/menzjp5y
ISI Viper Vapor Tape: tinyurl.com/27kay627
Rockwool Smartrock: tinyurl.com/mr45ax59
Pro Clima Intello Plus: tinyurl.com/42a8yyke
Santa Fe Compact 070: tinyurl.com/5683e8x3
Aerosmith EXIF Insulation Fastening Tools: tinyurl.com/bdhn66rh
Tescon Vana: tinyurl.com/38bsnmzc
Rockwool Comfortboard 80: tinyurl.com/ycye6c7y
Hultafors Insulation Knife: tinyurl.com/2p3wjk4w
DAP Barrier Multi-Project Foam Sealant: tinyurl.com/48xdh77u
PWT LVL: tinyurl.com/5cnhepzr
Polyguard Stretch Flex: tinyurl.com/czdkn5sn
RSVP For BuildShowLive 2026 in San Antonio - Tickets on Sale May 1st bsl.buildshownetwork.com/EWfSx
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➤THANKS TO OUR SPONSORS
⚝ ARCLIN: arclin.com
⚝ HUBER: huberwood.com
⚝ PELLA: pella.com
These are trusted companies that Matt has worked with for years, and their support helps make these videos possible. We highly encourage you to visit their websites for more information.
Bryan Uhler walks through the building science behind constructing an unvented crawl space, focusing on the proper sequencing of insulation, soil gas and vapor control, air sealing, and drainage. He explains how horizontal and vertical insulation work together to reduce thermal bridging while a durable membrane helps control moisture and radon. The discussion also covers variable vapor-permeable materials, seam sealing, dehumidification, and planning for mechanical systems and radon ventilation. Uhler emphasizes treating the assembly like a recipe, where product selection, compatibility, and installation sequence all work together to create a durable, conditioned crawl space.
Huge thanks to our episode sponsor, ISI Building Products. To learn more visit: vipercs.com
Resources Mentioned:
ISI Viper Double Bond Tape: tinyurl.com/32nynuct
ISI Viper CS Crawl Space Vapor Retarder: tinyurl.com/menzjp5y
ISI Viper Vapor Tape: tinyurl.com/27kay627
Rockwool Smartrock: tinyurl.com/mr45ax59
Pro Clima Intello Plus: tinyurl.com/42a8yyke
Santa Fe Compact 070: tinyurl.com/5683e8x3
Aerosmith EXIF Insulation Fastening Tools: tinyurl.com/bdhn66rh
Tescon Vana: tinyurl.com/38bsnmzc
Rockwool Comfortboard 80: tinyurl.com/ycye6c7y
Hultafors Insulation Knife: tinyurl.com/2p3wjk4w
DAP Barrier Multi-Project Foam Sealant: tinyurl.com/48xdh77u
PWT LVL: tinyurl.com/5cnhepzr
Polyguard Stretch Flex: tinyurl.com/czdkn5sn
RSVP For BuildShowLive 2026 in San Antonio - Tickets on Sale May 1st bsl.buildshownetwork.com/EWfSx
➤CHANNELS:
Podcasts: @BuildShowPodcasts
Build Experts: @BuildShowNetwork
Build Show Live: @BuildShowLive
➤BUILD GEAR STORE:
build-gearstore.com
➤SUBSCRIBE TO THE PODCAST:
Apple: apple.co/32AOwgU
Spotify: spoti.fi/3FXNg4X
➤SIGN UP FOR THE NEWSLETTER:
buildshownetwork.com/newsletter
➤ADVERTISE WITH US:
buildproductions.com
➤LEARN MORE ABOUT BUILDING:
thebuildshow.com
➤SOCIALS:
Instagram: instagram.com/risingerbuild
Instagram: instagram.com/thebuildshow
Facebook: facebook.com/buildshownetwork
➤THANKS TO OUR SPONSORS
⚝ ARCLIN: arclin.com
⚝ HUBER: huberwood.com
⚝ PELLA: pella.com
These are trusted companies that Matt has worked with for years, and their support helps make these videos possible. We highly encourage you to visit their websites for more information.
