What’s the Best Way to Insulate the Cargo Area of a Volkswagen T6 Transporter?

A Volkswagen T6 Transporter is a versatile van that many people use for a variety of purposes, including business, transport, and most popularly, for camper van conversions. One of the critical aspects of a campervan conversion is insulation. Insulation plays a crucial role in deciding how comfortable the interior of your van will be, no matter the weather; it retains heat in cold weather and keeps the heat out when it’s hot. However, choosing the right materials and understanding the best way to install it can be challenging. In this article, we will take an in-depth look at how to insulate your Volkswagen T6 Transporter, covering the best materials to use, the process of installation, and the benefits of insulation.

Why Insulation is Essential in a Campervan Conversion

Insulation is the first step in converting your Volkswagen T6 Transporter into a campervan. It provides a thermal barrier, preserving the internal air temperature and helping to control the climate inside the vehicle. Proper insulation will not only keep you comfortable but also protect the interior components of your van from extreme temperature changes.

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One of the main considerations is the choice of materials. There are numerous options available, like foam, spray, wool, or reflective foil. The choice will depend on what suits your van best. You should consider factors such as the thickness of the material, its thermal properties, how easy it is to install, and of course, your budget.

Choosing the Right Insulation Materials

The selection of insulation materials is your next big step. Foam board and spray foam are popular choices due to their excellent thermal and sound barrier properties. Reflective foil is another option that works by reflecting heat away from the vehicle, primarily when you install it on the roof.

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Foam board is relatively easy to install and provides excellent insulation. It’s also lightweight and does not absorb moisture, which is crucial for preventing mold and mildew growth.

Spray foam, on the other hand, expands to fill every nook and cranny, ensuring that there are no gaps left uninsulated. It also doubles as a sound barrier, reducing noise from the outside.

Reflective foil, while not as effective as foam in terms of insulation, is beneficial in hot climates as it reflects the sun’s heat, preventing it from heating the interior of the van.

How to Install Insulation in Your Van

Installation is a critical part of the insulation process. The first thing you need to do is clean the interior of the van to ensure there are no dirt or debris that can interfere with the insulation. Once the van is clean, you can measure and cut the insulation materials to fit.

For foam boards, you will need to secure them to the van’s walls, floor, and roof using adhesive. Make sure to fit the pieces tightly together to prevent any gaps that can let air in or out.

In the case of spray foam, remember to wear protective gear as it can be messy. Spray it into the gaps between the foam board pieces and any other small spaces that the foam board can’t cover.

Installing reflective foil is a bit different. You should affix it to the roof and upper parts of the walls, shiny side out, to reflect the sun’s rays.

Maintaining the Insulation of Your Vehicle

Maintenance is an often-overlooked aspect of campervan insulation. It is, however, essential to ensure your insulation lasts and performs at its best. Regular inspection of the insulation is recommended to identify and rectify any issues early. Look for signs of dampness or mold, as these can indicate water leaking into the insulation.

In case of foam board or spray insulation, check for any gaps or damage that might have occurred. These should be filled or repaired immediately to prevent air leakage. For reflective foil, ensure that it is securely attached and has not torn or become detached.

The Benefits of Proper Insulation

Finally, let’s talk about the benefits of proper insulation. The most apparent benefit is the improved comfort inside the vehicle. You’ll be able to maintain a comfortable temperature, no matter the weather outside. Insulation also acts as a sound barrier, reducing noise levels inside the van.

In addition to this, insulation can prevent condensation. Condensation can lead to dampness and mold growth, which are not only unpleasant but can also cause health issues. By insulating your van, you can keep the air inside dry and mold-free.

Insulation is also beneficial from an energy efficiency perspective. By maintaining a constant temperature inside the van, you will need to use less energy for heating or cooling, which can save you money in the long run.

The Role of VIP Member Brands in Van Insulation

In the world of van insulation, VIP member brands stand out for their quality. These trusted brands have earned their place in the market by delivering reliable insulation solutions that benefit users in the long term. Trusted brands like Thinsulate, Kingspan, and Xtratherm offer an array of insulation products, including foam board, spray foam, and reflective foil, that have been extensively tested for their effectiveness in camper van conversions.

The foam board from these brands, for instance, is renowned for its high-quality closed-cell foam structure that provides excellent thermal and sound deadening properties. The closed-cell foam structure ensures that no air or moisture can penetrate through the material, making it an ideal choice for areas exposed to moisture such as the floor insulation of your Volkswagen Transporter.

Spray foam, another popular product from VIP member brands, is ideal for filling up those hard-to-reach nooks and crannies in your van conversion. It’s easy to apply and expands upon application to create a tight seal that prevents heat transfer.

VIP member brands also offer reflective foil that is super effective in bouncing back the sun’s heat. Installing this on the roof and upper sections of your panel van can make a significant difference in maintaining a comfortable temperature inside.

Another standout feature of VIP member brands is their commitment to sustainability. Some brands offer insulation made from sheep wool, a natural and renewable material that is not only effective at insulating but also moisture-resistant, making it a great option for your campervan insulation.

Creating an Effective Vapour Barrier

Creating an effective vapour barrier is an essential step in insulating your Volkswagen Transporter. Not only does it prevent heat transfer, but it also helps to keep out moisture, which is crucial for maintaining the longevity of your insulation and preventing the growth of mold and mildew.

To create a vapour barrier, you will need to seal the walls, roof, and floor of your cargo van with a moisture-resistant material after installing your insulation. You can use a product like a foil-faced vapor barrier or plastic sheeting.

Start by cutting the vapour barrier material to size, ensuring it covers all areas where you’ve installed the insulation. Then, secure the vapour barrier to the walls, roof, and floor using an adhesive. Make sure all seams and edges are sealed to prevent any air or moisture from getting in. Remember, the goal here is to create a barrier that fully encloses the insulation material.

It’s also advisable to use a moisture meter to periodically check for any moisture buildup behind the barrier. This can help you detect and address any potential leaks before they can cause any significant damage to your insulation.


Insulating your Volkswagen T6 Transporter is a critical step in your campervan conversion process. It ensures a comfortable living environment, reduces noise, prevents condensation, and enhances the energy efficiency of your vehicle. While it may seem like a daunting task, understanding your insulation material options and the process can make it manageable.

Remember, the choice of insulation materials will depend on your van’s specific needs and your budget. VIP member brands offer an array of reliable and effective products ranging from foam board to spray foam and reflective foil. Don’t forget to create an effective vapour barrier to protect your insulation from moisture. Regular maintenance and inspection are essential to ensure the longevity and effectiveness of your insulation.

With proper insulation, your Volkswagen T6 Transporter can offer you a comfortable and enjoyable home on wheels. No matter your destination or the weather outside, you can look forward to a cozy and temperature-controlled environment inside your campervan.