Learn the best ways to insulate a shipping container to keep it warm in winter and cool in summer. Discover insulation types, benefits, and expert tips for a comfortable, energy-efficient space.
August 5, 2024
Insulating a shipping container is one of the most important steps in any conversion project. Without proper insulation, containers can become uncomfortably hot in summer and freezing cold in winter. Whether you're creating an office, workshop, home gym or accommodation unit, here’s how to insulate a shipping container for year-round comfort in the UK.
Shipping containers are made from steel, which is highly conductive. This means they absorb heat and cold easily, making the interior temperature fluctuate with the weather outside. Insulation helps to:
Spray foam is applied directly to the container walls and ceiling, creating an airtight and moisture-resistant barrier. It’s ideal for hard-to-reach areas and provides excellent thermal performance.
Pros: High insulation value, good for condensation control
Cons: Can be more expensive than other options
PIR (polyisocyanurate) boards are rigid panels that offer strong thermal resistance and are often used with timber battens and plasterboard for a clean internal finish.
Pros: Cost-effective, widely available
Cons: Requires more preparation and space for battening
A natural choice for soundproofing and thermal insulation, mineral wool is installed between framing and typically covered with plywood or plasterboard.
Pros: Great for acoustic insulation
Cons: Not moisture-resistant unless properly sealed
Fibreglass rolls or blankets can be used in dry environments, but they must be paired with a good vapour barrier to prevent damp issues.
Pros: Affordable and easy to install
Cons: Less effective at preventing condensation
Once insulated, the container can be lined with plywood, MDF, or plasterboard depending on the use and finish required. The result? A warm, dry, and usable space all year round.
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