Uploaded June 2026 | Updated September 2026, 2 weeks ago
Your basement may look perfect today... but what's happening behind the drywall?
In this video I explain why installing fibrous insulation against concrete foundation walls in cold climates creates unnecessary risk.
Warm interior air moves through fibrous insulation, reaches the cold concrete wall, condenses into water, freezes during winter, and eventually leads to wet insulation, mold, and damaged finished basements.
Closed-cell spray foam changes the equation.
✔ Air barrier
✔ Thermal barrier
✔ Moisture resistant
✔ Bonds directly to concrete
✔ No gaps behind rigid board
✔ No cavities for air movement
✔ No settling insulation
For a relatively small increase during construction, homeowners can dramatically reduce the chance of expensive moisture repairs years later.
If you're building a home, developing a basement, or designing foundations in cold climates, this is information you should know before the drywall goes up.
Spray foam isn't just insulation. It's part of the building envelope.
Subscribe for real-world building science, spray foam education, and honest discussions about better construction.
Your basement may look perfect today... but what's happening behind the drywall?
In this video I explain why installing fibrous insulation against concrete foundation walls in cold climates creates unnecessary risk.
Warm interior air moves through fibrous insulation, reaches the cold concrete wall, condenses into water, freezes during winter, and eventually leads to wet insulation, mold, and damaged finished basements.
Closed-cell spray foam changes the equation.
✔ Air barrier
✔ Thermal barrier
✔ Moisture resistant
✔ Bonds directly to concrete
✔ No gaps behind rigid board
✔ No cavities for air movement
✔ No settling insulation
For a relatively small increase during construction, homeowners can dramatically reduce the chance of expensive moisture repairs years later.
If you're building a home, developing a basement, or designing foundations in cold climates, this is information you should know before the drywall goes up.
Spray foam isn't just insulation. It's part of the building envelope.
Subscribe for real-world building science, spray foam education, and honest discussions about better construction.
