In Norway, green roofs are not just a trend, but a way of life. Many buildings in Norway feature lush green roofs, providing insulation, reducing stormwater runoff, and creating habitats for local wildlife.
Green roofs in Norway are often designed with a combination of plants, soil, and drainage systems to ensure optimal growth and maintenance. This approach is particularly effective in the country's cool, temperate climate.
By incorporating green roofs into urban planning, Norway has successfully reduced the urban heat island effect, which can raise temperatures in cities by up to 2°C. This has a significant impact on the quality of life for residents, especially in densely populated areas.
In Oslo, for example, green roofs cover over 10% of the city's buildings, demonstrating the potential for widespread adoption.
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What are Green Roofs?
Green roofs are a unique way to go green, literally. They're called turf roofs in Norway, and they've been around for hundreds of years.
Some turf roofs are bright green and almost velvety, while others are golden and look like they're growing wheat or oats. You'll even see some with flowers mixed in with the grass, and a few have small trees.
Turf roofs are very heavy, which helps to stabilize the house. They're also great insulators and can last a long time.
In Norway, you'll see turf roofs everywhere, especially in rural areas. They were almost universal until the beginning of the 18th century, but then tile roofs became more popular.
Take a look at this: Turf Roof
Designing and Building Green Roofs
Norwegians have been planting greenery atop their houses for hundreds of years, so you can bet they've figured out some great design and building techniques.
The traditional "torvtak" or turf roof is covered with sod on top of several layers of birch bark on gently sloping wooden roof boards. This unique construction helps to compress the logs and make the walls more draught-proof.
The load of a sod roof, approximately 250 kg per m², is actually an advantage because it helps to keep the wooden walls straight, preventing them from warping with changes in moisture.
In winter, the total load may well increase to 400 or 500 kg per m² because of snow, but that's still a great benefit for the structural integrity of the house.
Many cultural and commercial institutions in Norway have integrated green roofs into their design, making them a beautiful and functional part of the building.
These structures blend well with the surrounding landscape, creating an uninterrupted aesthetic that's both visually appealing and environmentally friendly.
Since 2000, the Scandinavian Green Roof Association has been giving an annual award to the best green roof project in Scandinavia, showcasing the best of Norwegian design and innovation.
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Green Roof Images and Inspiration
You can find a wide variety of grass roof houses in Norway, with over 32,000 stock photos and images available to browse.
A sod roof log cabin with grass on top is a common sight in Norway, as seen in Tessanden, Norway - June 17.
Traditional Norwegian huts often feature turf grass blooming roofs, like the abandoned wooden cabins in Norway.
Red rorbuer with green roofs are a typical sight in Fjord in Reine on Lofoten Islands, Norway.
The Iron Age Farm in Stavanger, Norway, features a traditional Norwegian wooden house with a grass roof.
Green roofs are not just limited to modern homes, but can also be found on traditional Norwegian mountain village houses, like the one in Oslo.
Recommended read: Grass on Roof Norway
Frequently Asked Questions
Why do houses in Norway have grass roofs?
Houses in Norway often have grass roofs to provide a natural habitat for birds and insects, while also helping to reduce rainwater runoff. This eco-friendly design can decrease annual runoff by 40-90% depending on the roof's design and plant selection.
Featured Images: pexels.com
