Thermal Window Covers & Silver Screens
Window covers are the single most effective winter van life upgrade.
Why Window Covers Matter
A van's windows are the weakest thermal point. Single-glazed glass has an R-value of about 0.1. A thermal window cover adds R-1 to R-3. In winter, covering your windows at night keeps the heat in and the cold out. Heat loss through windows: Up to 30% of your van's heat escapes through the glass. A good set of covers reduces this to 5-10%.
Types of Thermal Covers
1. Reflective (Silver Screens)
Made of closed-cell foam with a reflective aluminium layer. They reflect heat back into the van and block sunlight in summer. They are the most popular option because they are effective, cheap, and easy to make. Best: Rain-X or Silver Screens custom-fit for your van model. £50-100 for a full set (cab + side + rear). DIY: Buy a roll of reflective foil bubble wrap (Reflectix or similar, £20 from B&Q). Cut to fit each window. Stick with Velcro dots. This works as well as custom covers for £20.
2. Fleece/Curtain Type
A fabric cover with a thermal lining (Thinsulate or fleece). Better for condensation (fabric absorbs moisture) but less reflective heat retention. Best: Custom-made van curtains with a thermal lining. £200-400 for a full set. Looks better than silver screens, less effective at heat retention.
3. Magnetic Covers
A sheet of thermal material with magnets sewn into the edges. They attach to the van's steel body panels around the window. No Velcro, no suckers. Quick to install. Best: Thermo Covers. £80-150 for a full set. Easy to install, remove, and store.
Comparison
| Cover Type | Heat Retention | Condensation Control | Privacy | Cost | DIY? |
|---|---|---|---|---|---|
| Silver Screen (reflective) | Excellent | Poor (condensation behind foil) | Total | £20-100 | Yes (foil + Velcro) |
| Fleece/thermal curtain | Good | Excellent (absorbs moisture) | Good | £100-300 | No |
| Magnetic cover | Very good | Good | Total | £80-150 | No |
| Bubble wrap (DIY) | Good | Poor | Low (translucent) | £10 | Yes |
Condensation Management
Silver screens are great for heat but create condensation between the glass and the foil. In winter, the moisture has nowhere to go. The solution:
- Remove the covers every morning and dry them
- Wipe the windows with a squeegee (£3, Halfords)
- Use a moisture absorber (one of the £5 bags from Wilko) between the cover and the glass
- Consider fleece covers if condensation is a persistent problem
Installation Tips
- Cab covers: Cover the windscreen and side windows. The windscreen is the biggest heat loss point. Many vans have a 2-piece screen — you can buy a cover for just the lower half.
- Rear doors: If you have rear window doors, cover them. The heat loss through rear glass is significant.
- Side windows: Curtains are fine for the living area windows. Full silver screens here make the van feel like a cave.
- Velcro vs suckers: Velcro is quieter (no rattling), but the adhesive fails in cold weather. Suction cups are better for winter but can fall off. Magnetic covers are the best all-round solution.
Verdict
DIY reflective foil covers (£20) for the cab windows, plus thermal curtains (£100-200) for the living area. This combination is the most effective and affordable thermal window setup for UK van life. The cab covers come off when you drive, the curtains stay up.
