In Norse mythology, what material forms Valhalla’s roof?

In Norse mythology, shields form Valhalla’s roof.

The image comes from Grimnismal, which describes Valhalla as an immense, unusual hall connected with Odin. The poem also gives the building martial details: its walls are associated with spears, and its benches are covered with armor. These features make the hall resemble a warrior’s world even when it is presented as a place of feasting.

The shield roof is symbolic as well as visual. Shields were central pieces of Germanic and Norse battlefield equipment, so using them as architecture marks the hall as a place defined by combat and warrior identity. This detail should not be confused with the hall’s doors, which are counted separately, or with the boar and goat associated with its daily food and drink.