The exterior timber cladding is coated with black tar, a traditional Norwegian treatment. The finish serves a variety of purposes: solar heat gain, water resistance, and insect repellant.  Photo 4 of 8 in Evolving Exterior from Here's What Norse Mythology and Modern Architecture Have in Common

Evolving Exterior

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The exterior timber cladding is coated with black tar, a traditional Norwegian treatment. The finish serves a variety of purposes: solar heat gain, water resistance, and insect repellant.