Exterior Insulation Upgrade – ZIP-R Sheathing for Energy Efficiency

It’s finally time to move forward on this house, and in this episode we’re tackling one of the highest-impact upgrades you can make on a tight budget: exterior insulation and sheathing using ZIP-R.

Once the new exterior sheathing is installed, the house becomes fully weather-tight again, allowing us to move inside and begin insulation, air sealing, and interior work.

This step is critical for energy efficiency, comfort, and long-term durability, especially in older homes framed with 2×4 walls.

What This Video Covers

• Why exterior insulation matters for performance and efficiency
• How ZIP-R provides continuous insulation and an integrated WRB (water-resistive barrier)
• How exterior foam upgrades 2×4 walls toward near 2×6 performance
• Why reducing multiple WRB layers helps prevent trapped moisture
• Planning panel layout, flashing, and sequencing for long-term durability

Key Takeaway

This approach is DIY-friendly, practical, and focused on performance over finishes. If you’re renovating an older home and want better comfort, lower energy bills, and fewer long-term issues, this is a high-value upgrade worth understanding.