Window tint does double duty: privacy so people can't see into your van, and heat rejection to keep your interior cooler. For stealth camping, it's practically essential.
If you're planning to sleep in your van — especially in urban areas like parking lots, residential streets, or rest stops — window tint is practically a requirement. Without it, anyone walking by can see your bed, your gear, and you. Dark tint on rear and side windows is the single most effective stealth upgrade you can make. Most people won't look twice at a van with tinted windows; without tint, a van with curtains and a bed visible screams "someone lives here."
Beyond privacy, tint blocks 40-70% of solar heat depending on the type, which keeps your interior significantly cooler on sunny days and reduces the load on your fans. It also blocks 99% of UV rays, protecting your interior from fading.
Most van builders go dark on rear windows (5-15% VLT) where privacy matters most, and stay at legal limits on the front driver and passenger windows (typically 25-50% VLT depending on your state). In most states, there's no legal limit on rear windows behind the driver. Front window tint is where you're most likely to get ticketed, so check your state's laws.
There are four main types of window tint film: dyed (cheapest, weakest heat rejection, fades over time), metallic (better heat rejection but interferes with cell signal — avoid this one), carbon (good heat rejection, no signal issues), and ceramic (best heat rejection, no signal issues, most expensive). If you rely on cell signal for internet, avoid metallic tint — it creates a Faraday cage effect that weakens your signal.
For most van builds, professional carbon or basic ceramic film for $250-400 total hits the sweet spot — good heat rejection, no signal interference, clean installation, and it'll last the life of your van. If you're on a tight budget, DIY dyed film at $30-60 gives you the privacy (the main reason most people tint) even if the heat rejection isn't as good.
Many experienced van lifers also use tint + removable window covers together. The tint gives always-on privacy during the day, while Reflectix or fabric inserts go up at night for full blackout and maximum heat rejection. A roll of Reflectix costs $15-25 and covers all your windows.
If you have flat rear windows (like most cargo vans), DIY tinting is totally doable — buy a pre-cut kit for your van model ($30-100), watch a couple YouTube tutorials, and take your time. If you have curved windows (like Sprinter/Transit rear quarter panels), seriously consider paying a pro ($200-600 for all windows). Curved windows are where DIY tint goes from "kind of fun" to "I want to throw this roll of film in a dumpster."
Professional installation also comes with a warranty and guarantees a bubble-free result. For a few hundred dollars, it's one of the easier things to outsource on your build.