Best campervan insulation UK

Best campervan insulation UK

If you're converting a campervan in the UK, choosing the right insulation is essential for controlling temperature, reducing condensation and creating a quieter, more comfortable living space. At Car Insulation UK, the most effective approach is combining sound deadening with thermal insulation rather than relying on a single product.

Why Campervan Insulation Matters

A campervan's metal body acts as a conductor, making it cold in winter and hot in summer. Without proper insulation, you'll experience:

  • Condensation and moisture build-up
  • Increased road noise
  • Heat loss during colder months
  • Excessive heat gain in summer
  • Reduced comfort when travelling or sleeping

A properly insulated campervan helps create a quieter, warmer and more energy-efficient interior.

The Best Campervan Insulation System

Step 1: Sound Deadening

Before adding thermal insulation, apply sound deadening to large metal panels.

Recommended Product: PeaceMAT XR Sound Deadening

Sound deadening mats help reduce:

  • Panel vibration
  • Road noise
  • Rattles
  • Resonance

For most van conversions, covering 25-40% of large metal panels is enough to achieve excellent results.

Step 2: Thermal Insulation

Once sound deadening is installed, add closed-cell foam insulation.

5mm Polyethylene Van Insulation or 6mm Closed Cell Foam VLiner

Ideal for:

  • Doors
  • Curved panels
  • Tight spaces
  • Wheel arches

Benefits:

  • Lightweight
  • Moisture resistant
  • Flexible and easy to install
  • Helps reduce condensation

11mm Polyethylene Van Insulation or 10mm SOShield

Ideal for:

  • Roofs
  • Side walls
  • Larger flat panels

Benefits:

  • Greater thermal performance
  • Improved acoustic comfort
  • Better winter insulation

Car Insulation UK's polyethylene insulation is manufactured from moisture-resistant closed-cell foam designed specifically for campervans, vans and motorhomes. It helps reduce heat loss, condensation and road noise while remaining lightweight and easy to install. 

Step 3: All-in-One Solution

For converters wanting insulation and sound deadening in a single product:

PeaceMAT PRO 5mm Thermal & Sound Deadening Mat

PeaceMAT PRO combines:

  • Butyl sound deadening
  • Closed-cell foam insulation
  • Vapour barrier protection

Benefits:

  • Reduces vibration and road noise
  • Helps prevent condensation
  • Improves thermal efficiency
  • Quick self-adhesive installation

This makes it an excellent option for campervan floors, doors, roofs and side panels.

Best Campervan Insulation Setup for UK Weather

Budget-Friendly Build

  • PeaceMAT XR Sound Deadening
  • 5mm Polyethylene Van Insulation

Perfect for:

  • Weekend campers
  • Summer use
  • Lightweight builds

Premium All-Season Build

  • PeaceMAT XR Sound Deadening
  • 10mm SOShield Van Insulation
  • ABSOFT Acoustic Liner

This combination delivers excellent thermal insulation, sound reduction and condensation control for year-round UK camping.

Complete Insulation Kit

car insulation bonnet liner

For a complete solution, Car Insulation UK offers ready-made campervan insulation kits containing:

  • PeaceMAT XR Sound Deadening
  • GlassMAT XR or SOShieldThermal Insulation
  • ABSOFT Acoustic Liner
  • PeaceMAT XXX Mass Loaded Floor Barrier Materials
  • Spray Adhesive
  • Installation Roller

These kits are designed specifically for campervan conversions and professional van builds.

Does Campervan Insulation Stop Condensation?

No insulation completely eliminates condensation.

However, closed-cell foam insulation and thermal liners help reduce condensation by:

  • Limiting cold bridging
  • Acting as a vapour barrier
  • Reducing temperature differences between metal panels and interior surfaces

Combined with proper ventilation, this significantly reduces moisture problems inside campervans.

Frequently Asked Questions

What is the best campervan insulation in the UK?

For most van conversions, the best combination is PeaceMAT XR Sound Deadening together with 11mm Closed-Cell Polyethylene Van Insulation. This provides excellent thermal performance, noise reduction and condensation control.

Is 5mm or 11mm insulation better?

  • 5mm is ideal for tight spaces and doors.
  • 11mm offers better thermal performance for walls and roofs.

Do I need sound deadening and insulation?

Yes. Sound deadening reduces vibration and noise, while insulation controls temperature and condensation. They perform different functions and work best together.

Conclusion

The best campervan insulation in the UK isn't a single product. The most effective system combines PeaceMAT XR Sound Deadening, 5mm or 11mm Closed-Cell Polyethylene Insulation, SOShield, and where required, ABSOFT Acoustic Liner or a complete campervan insulation kit from Car Insulation UK. This layered approach delivers the best balance of thermal performance, condensation control and road-noise reduction for campervans, motorhomes and van conversions.

Back to blog