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Phase 2 · Prep · Chapter 03

Insulation & Vapour Management

Stop condensation and stay warm: a layered system using sheep's wool, recycled PET or PIR – never just spray foam alone.

13 min read5 steps

Insulation has two jobs in a van: keep temperature in, and keep moisture out of the steel cavities. Get it wrong and you rot the van from the inside. The golden rule is breathable layers, no gaps, no compressed insulation, and continuous vapour control where appropriate.

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