The roof is retractable, not fixed, so coverage depends on the weather and the event
U.S. Bank Stadium in Minneapolis has a retractable roof, which means it can open and close but is not permanently sealed. The roof is made of ETFE plastic panels — a lightweight, durable material that lets light through — and can be fully closed in about 25 minutes. When closed, it covers the entire playing field and most of the seating bowl, protecting spectators and players from rain and snow.
Whether the roof is open or closed on any given day depends on the weather forecast, the type of event, and the team's preference. For Minnesota Vikings games, the roof typically closes during winter months or when rain is expected. For concerts and other events, the promoter and venue decide together. The roof does not operate during extreme wind conditions — if gusts exceed a certain threshold, it stays in whatever position it is in.
The stadium opened in 2016, and the retractable roof was a major feature of its design. It allows the Vikings to play outdoors during mild weather while still protecting the crowd during Minnesota's harsh winters.
Key Takeaways
- The roof closes completely over the field and seating areas, but it is not always closed — weather and event type determine whether it opens or stays shut.
- The roof takes about 25 minutes to open or close fully, so it cannot be operated during the game or event itself.
- Wind speeds above a certain level prevent the roof from operating, so extreme weather can leave it stuck in one position.
- The roof is made of ETFE plastic that allows natural light to enter even when closed, which is why the stadium does not feel like an enclosed dome.
How the retractable roof actually works
The roof consists of eight large ETFE plastic panels that slide on a track system. When the roof opens, the panels retract toward the sides and ends of the stadium, exposing the field to the sky. When it closes, they slide back into place and overlap to create a weathertight seal. The system is motorized and controlled from the stadium's operations center.
The opening and closing process requires calm conditions. Stadium staff monitor wind speed and weather radar before deciding to operate the roof. If wind gusts are forecast to exceed the safe operating threshold — typically around 35 miles per hour — the roof stays in its current position. This is a safety measure to prevent damage to the panels or the track system.
The ETFE material is transparent, so even when the roof is closed, natural daylight enters the stadium. This is different from a traditional dome, which would be opaque. The material also has a slight blue tint and reduces glare, which is why the lighting inside feels natural even on overcast days.
When the roof is typically closed
For Vikings games, the roof is usually closed from November through March, when snow and freezing temperatures are common in Minneapolis. During the warmer months — April through October — the roof often stays open unless rain is in the forecast. The team's operations staff makes the call based on the National Weather Service forecast and field conditions.
For other events like concerts, NFL playoff games, or Super Bowl events, the promoter and venue management decide together. Some touring acts prefer the roof closed for acoustic reasons or to control the environment. Others want it open for the visual experience. The decision is made days in advance, not on the day of the event.
The roof cannot be operated during an event. Once the game or concert starts, the roof stays in whatever position it was in when the event began. This is why the decision must be made before doors open to the public.
What areas are protected when the roof closes
When fully closed, the roof covers the entire playing field and all seating areas inside the stadium bowl. The concourse areas — where people walk, buy food, and use restrooms — are also protected. The only outdoor areas are the exterior plaza and parking lots surrounding the building.
The roof does not extend beyond the stadium walls, so tailgating areas and the outdoor plaza remain exposed to weather. However, the main stadium structure, the field, and all spectator seating are under cover when the roof is closed.
The difference between a retractable roof and a fixed dome
A retractable roof can open and close; a fixed dome cannot. U.S. Bank Stadium's retractable design allows the Vikings to play outdoors during pleasant weather — which matters in Minnesota, where fans and players value the outdoor football experience — while still protecting everyone during winter storms. A fixed dome would always be closed, which changes the acoustics, the lighting, and the feel of the game.
The trade-off is that a retractable roof requires more maintenance and has moving parts that can fail. It also cannot operate in high winds, so extreme weather can leave it stuck. A fixed dome is simpler and more reliable but removes the option to play outdoors.
Other NFL stadiums with retractable roofs include Allegiant Stadium in Las Vegas and SoFi Stadium in Los Angeles. Most other stadiums are either fully enclosed domes or completely open-air.
Visibility and light when the roof is closed
The ETFE plastic panels are translucent, not opaque, so the stadium does not feel like a dark enclosed space when the roof is closed. Natural daylight passes through the material, which means daytime games have natural lighting even with the roof fully closed. This is one reason the stadium does not feel like a traditional indoor dome.
The panels also reduce glare and UV radiation, which protects the field and the crowd from harsh direct sunlight on hot days. At night, the stadium's lighting system takes over, and the closed roof reflects some of that light back down, which can make the interior brighter than an open-air stadium at night.
Frequently Asked Questions
Can the roof open and close during a game?
No. The roof must be in its final position before the event starts. It takes about 25 minutes to fully open or close, so it cannot be operated once spectators are in the stadium or the game has begun. The decision is made hours or days in advance.
What happens if the roof gets stuck?
If the roof stops mid-operation due to a mechanical failure, stadium staff can manually operate it or leave it in that position. High winds can also prevent the roof from operating, in which case it stays where it is. The stadium has backup systems and trained technicians to handle these situations.
Does the closed roof affect the sound or temperature inside?
Yes. A closed roof reflects sound back into the stadium, which can make it louder than an open-air game. The roof also traps heat, so the interior temperature can be warmer when closed, especially during crowded events. This is why some touring acts prefer the roof closed for acoustic control.
Is the roof ever damaged by snow or ice?
The ETFE material is designed to shed snow and ice, and the roof panels are angled to allow water to run off. Heavy snow loads are rare because the roof is closed during winter storms, preventing accumulation. The material is also durable enough to withstand Minnesota winters without cracking or degrading.
Can fans see outside when the roof is closed?
The ETFE panels are translucent, so you can see light and sky through them, but not clear details of the outside. It is similar to looking through frosted glass — you know it is daytime or nighttime, but you cannot see individual clouds or stars clearly.