Why Insulation Matters
Your van's metal shell is essentially a thermal conductor—scorching hot in summer, freezing cold in winter. Proper insulation transforms this metal box into a comfortable living space, reducing your reliance on heating and cooling systems.
Choosing the Right Material
Not all insulation is created equal. Here's what works best for vans:
- Sheep's Wool: Natural, breathable, and handles moisture beautifully. R-value of 3.5-4 per inch.
- Thinsulate: Originally designed for clothing, it's thin yet effective. Great for tight spaces.
- XPS Foam: Rigid foam boards perfect for floors. Moisture-resistant with high R-value.
- Spray Foam: Fills every gap but can cause issues if not applied correctly. Best left to professionals.
The Vapor Barrier Debate
Condensation is the enemy of van dwellers. Warm, moist air hitting cold metal creates water droplets that can lead to rust and mold. The key is managing moisture:
- Use breathable insulation like wool that can absorb and release moisture
- Ensure good ventilation with fans and vents
- Avoid trapping moisture with impermeable barriers in humid climates
Installation Tips
Take your time with this phase—it's the foundation of your comfort:
- Clean and treat all bare metal with rust converter before insulating
- Don't compress insulation—its effectiveness comes from trapped air pockets
- Pay special attention to thermal bridges like wheel wells and door frames
- Use sound deadening (like Kilmat) on large panels to reduce road noise
