After what felt like an endless battle with rust, we finally reached one of the most satisfying stages of the build—insulating the van.

In Episode 3 of Mel's Toyota HiAce campervan conversion, we install insulation throughout the walls, ceiling and floor while discussing one of the most debated topics in van building. Rather than getting lost in conflicting opinions, we simply show the method we've found to work best after multiple van conversions.

Using closed cell foam, we create a simple, beginner-friendly insulation system that's designed to reduce condensation, improve comfort and maximise headroom without adding unnecessary complexity.

In this episode, you'll see:

• Why I choose closed cell foam insulation

• How we insulated the walls and ceiling

• Installing insulation beneath the subfloor

• Creating effective moisture protection by bonding insulation directly to the body

• Whether floor insulation is worthwhile

• A small mistake we made—and why it wasn't the end of the world

If you're planning your own van conversion and feeling overwhelmed by the endless insulation debates online, this episode will give you a practical approach that's easy to follow and proven across multiple builds.

👉 Looking for more detailed, step-by-step guidance? Check out my Van Conversion Guide, where I break down every stage of the build with beginner-friendly tutorials, product recommendations and practical advice.