25mm Closed Cell Foam Van & Boat Insulation - Thermal & Soundproofing
Upgrade your campervan, van, boat, or motorhome with premium 25mm closed cell foam insulation - a high-performance thermal and acoustic insulation designed to improve comfort, reduce condensation, and minimise road noise.
Manufactured from durable OEM-grade closed-cell foam, this lightweight yet highly effective insulation helps keep interiors warmer in winter and cooler in summer while reducing vibration, rattles, and external noise. The moisture-resistant closed-cell structure also helps prevent condensation, mould, and mildew buildup inside vehicles and marine environments.
Flexible and easy to install, this insulation foam is ideal for walls, floors, ceilings, wheel arches, doors, body panels, and under-seat areas in campervan conversions and automotive projects.
Key Features & Benefits
- Premium 25mm closed-cell foam insulation
- Excellent thermal insulation and soundproofing
- Helps reduce condensation and moisture buildup
- Lightweight, flexible, and easy to cut
- Water, oil, and dust resistant
- Helps minimise road noise and vibration
- Flame-retardant for improved safety
- Suitable for campervans, vans, boats, motorhomes, and vehicles
Recommended Applications
Ideal for:
- Camper van insulation
- Boat and marine insulation
- Vehicle wall and roof insulation
- Floor and wheel arch insulation
- Under-seat and load floor insulation
- Automotive soundproofing projects
- Anti-rattle and sealing applications
Product Specifications
- Thickness: 25-30mm nominal
- Weight: Approx. 1300gsm
- Coverage: From 1m²
- Temperature Stability: -20°C to +110°C
- R-Value: ≈ 0.86 (m²·K/W)
- U-Value: ≈ 1.16 (W/m²·K)
- Thermal Conductivity: ≈ 0.035 (W/m·K)
- Sound Deadening: ≈ 22–26 dB
Installation
- Self-adhesive backing for easy peel-and-stick fitting
- Double-sided tape can be used for additional support
- Star washers recommended for demanding areas
Easy to cut and shape for both DIY and professional vehicle conversions.
Conclusion
This 25mm closed cell foam insulation provides professional-grade thermal insulation, soundproofing, and moisture resistance for campervans, boats, and vehicle conversions. Designed for long-lasting durability and year-round comfort, it helps create a quieter, warmer, and more efficient interior environment.
