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Termoflex XF 19 mm is a premium self-adhesive closed cell foam insulation designed for campervans, motorhomes, van conversions, boats and commercial vehicles. Manufactured from high-quality elastomeric rubber foam, it delivers exceptional thermal insulation, condensation control and acoustic insulation while remaining lightweight, flexible and easy to install.
With its 19 mm insulation thickness, Termoflex XF is the ideal choice for builders looking to maximise thermal performance. It is particularly suited for campervan walls, ceilings and large body panels where superior insulation helps maintain comfortable interior temperatures in every season.
The material features a high-performance self-adhesive backing that bonds securely to properly prepared metal surfaces, ensuring fast installation and reliable long-term adhesion under vibration, humidity and extreme temperature changes.
Vehicle body panels conduct heat extremely efficiently. In winter, valuable interior heat escapes through the metal shell, while in summer the sun rapidly heats exposed body panels, causing uncomfortable interior temperatures.
Termoflex XF 19 mm creates a thick thermal barrier that dramatically reduces heat transfer between the vehicle body and the living space. The increased insulation thickness provides significantly greater thermal resistance than thinner foam insulation, making it an excellent choice for all-season campervan conversions.
If you’re building a campervan for year-round adventures, 19 mm closed cell foam insulation is one of the best choices for large insulated areas.
Closed cell elastomeric foam is one of the most widely used insulation materials in the automotive and HVAC industries because it combines excellent thermal performance with outstanding moisture resistance.
Unlike traditional fibreglass or mineral wool insulation, closed cell foam:
Large body panels account for the majority of heat loss inside a campervan. Insulating these surfaces with 19 mm closed cell foam significantly improves interior comfort while reducing heating and cooling requirements.
Termoflex XF 19 mm is especially recommended for:
The additional insulation thickness provides excellent thermal performance without excessive weight, making it ideal for professional camper conversions.
Condensation is one of the biggest challenges inside campervans. Warm interior air naturally condenses when it meets cold steel body panels, potentially leading to corrosion, mould and unpleasant odours.
Because Termoflex XF is installed directly onto the vehicle body, it keeps the metal surface warmer and greatly reduces condensation formation.
The closed-cell structure absorbs less than 0.1% water, ensuring long-lasting insulation performance even in humid environments.
Termoflex XF combines excellent thermal conductivity values with increased insulation thickness for outstanding thermal efficiency.
The combination of low thermal conductivity and 19 mm thickness makes this one of the most effective insulation materials available for campervan conversions.
| Material | Closed cell elastomeric rubber foam |
| Thickness | 19 mm |
| Weight | Approx. 1.10 kg/m² |
| Density | Approx. 60 kg/m³ |
| Thermal Conductivity | 0.034–0.044 W/mK |
| Operating Temperature | -50°C to +85°C |
| Water Absorption | ≤0.1% |
| Water Vapour Resistance | Sd ≥10,000 |
| Fire Rating | B-s3,d0 / UL94 V-0 |
| Colour | Black / Anthracite |
| Roll Width | 1000 mm |
| Adhesive | High-strength self-adhesive backing |
| Certifications | CE, REACH, RoHS, ISO 3795 |
Termoflex XF 19 mm is suitable for a wide variety of applications, including:
Selecting the correct insulation thickness depends on available installation space and the desired thermal performance.
6 mm insulation is ideal for doors, wheel arches and confined spaces.
13 mm insulation provides an excellent balance between insulation performance and interior space.
19 mm insulation delivers the highest thermal performance and is recommended for campervan walls, ceilings and large body panels whenever maximum insulation efficiency is required.
Professional van builders often combine all three thicknesses throughout the vehicle to optimise insulation while preserving usable living space.
For best adhesion, installation is recommended at temperatures above +5°C.
Although primarily designed for thermal insulation, the flexible elastomeric foam also helps reduce airborne noise and vibration.
For maximum vehicle soundproofing, combine Termoflex XF with butyl sound deadening sheets. The butyl layer controls panel resonance while the foam insulation provides thermal insulation, condensation control and additional acoustic absorption.
Yes. It is one of the best choices for campervan walls and ceilings where maximum thermal insulation is required for year-round use.
Yes. The strong self-adhesive backing is designed to bond directly to clean, dry and grease-free metal surfaces.
No. The closed-cell structure absorbs less than 0.1% water, making it ideal for condensation control.
Yes. It helps reduce airborne noise and improves overall acoustic comfort. The best results are achieved when combined with butyl sound deadening material.
For large wall and ceiling panels, 19 mm provides superior thermal insulation. Where installation space is limited, 13 mm or 6 mm may be more appropriate.
Absolutely. Many professional campervan builders install 19 mm insulation on walls and ceilings, 13 mm on medium-depth cavities and 6 mm in tighter structural areas.
Termoflex XF 19 mm Self-Adhesive Closed Cell Foam Insulation is designed for builders who want maximum thermal efficiency, outstanding condensation protection and professional-quality installation.
Its combination of low thermal conductivity, thick closed-cell construction, excellent moisture resistance and powerful self-adhesive backing makes it an ideal insulation solution for campervans, motorhomes, boats and commercial vehicles.
Whether you’re building an expedition vehicle, a full-time campervan or a premium motorhome conversion, Termoflex XF 19 mm delivers reliable, long-lasting insulation performance in every season.