MHG Textiles Polyester Campervan Insulation Review

The core of this product's design is its material: 100% recycled polyester. This is a smart choice for the confined space of a campervan, not just for its eco-credentials but for the health and comfort of the person installing it.

User-Friendly Material

Unlike traditional glass or mineral wool, this polyester insulation is non-itch and non-irritant. This is a massive quality-of-life upgrade for any DIY builder, removing the need for full-body protective suits and face masks during the install. It's soft to the touch and releases no nasty fibres when cut, which also contributes to better long-term air quality inside your van.

Built for Van Life

The material's structure is inherently hydrophobic, meaning it doesn't absorb moisture. This is critical in a campervan where [condensation is a constant battle](/blog/how-to-prevent-frost-and-condensation-on-your-campervan). By resisting water, it prevents the build-up of damp and mould within your van's walls, protecting both the vehicle's structure and your health. The 50mm thickness and 370mm width are designed to suit common gaps between wall supports in popular van models like Transporters and Sprinters.

In practice, insulation is all about creating a stable, comfortable environment inside your van, regardless of the weather outside. Based on its specifications, this polyester roll should perform very well for the vast majority of campervan adventures.

Thermal Performance

An R-value of 2.29 is a respectable rating for this type of insulation. In real-world terms, this means it will significantly slow down heat transfer. On a cold autumn evening, the heat from your body or a [small diesel heater](/buying-guides/diesel-heaters) will be retained for much longer, keeping the space cosy. Conversely, on a hot summer's day, it will help to keep the sun's heat out, making the van a more pleasant refuge from the heat. This efficiency means less reliance on heaters or fans, saving you power when you're off-grid.

Acoustic Insulation

A brilliant, and often overlooked, benefit of this type of fluffy insulation is its ability to absorb sound, a key element of effective [campervan soundproofing](/services/soundproofing). Installing it throughout your van will dramatically reduce road noise, panel vibrations, and the sound of rain on the roof. This creates a much more peaceful and quiet living environment, which makes a huge difference to comfort levels on the road and at the campsite.

Ease of Installation

Performance isn't just about thermal values; it's also about how easy the product is to use. This roll is lightweight and simple to cut with a sharp utility knife or heavy-duty scissors. It can be easily stuffed and friction-fitted into wall cavities, ceiling panels, and door cards, making the entire process quick and painless for a DIYer.

While insulation might seem like a simple product, several key features here make it particularly well-suited for campervan conversions.

Non-Itch & Non-Toxic

This is arguably its most user-centric feature. Anyone who has worked with traditional fibreglass insulation will know the misery of itchy skin and respiratory irritation. This polyester material completely eliminates that problem, making the build process faster and far more pleasant. Being low in Volatile Organic Compounds (VOCs) also means you're not introducing harmful chemicals into your small living space.

Moisture Resistance

The hydrophobic nature of the polyester fibres is a critical feature. It will not act like a sponge if condensation forms on the van's metal skin. Instead, it allows moisture to run down and exit as intended, rather than becoming a saturated, mouldy mess inside your walls. This is essential for the longevity of your van and your own health.

Eco-Friendly Construction

The fact that it's made from 100% recycled materials (often plastic bottles) is a significant plus. For many in the van life community, reducing our environmental impact is a priority, and choosing a product like this allows us to incorporate that ethos right into the bones of our build.