Sod it!
Now this was another surprise in Norway! Sod roofs aka turf roofs were common. They were not just confined to living accommodation but also regularly seen on sheds, bus shelters, mail boxes etc.
According to Wiki, the concept goes back several thousand years. Until fairly recently the most common method used was to place sod on top of several layers of birch bark that had been laid on gently sloping wooden roof boards. The weight compressed the timber construction underneath, originally logs, making the inside more draught proof. This was even more apparent with the weight of winter snow on top. Another advantage was turf being quite a good insulator.
The modern method is to use bitumen roofing felt combined with dimpled plastic drainage membranes in place of birch bark. The turf is then laid over this drainage layer.
Flickr Explore # 153 on Thursday, June 29, 2017.
Sod it!
Now this was another surprise in Norway! Sod roofs aka turf roofs were common. They were not just confined to living accommodation but also regularly seen on sheds, bus shelters, mail boxes etc.
According to Wiki, the concept goes back several thousand years. Until fairly recently the most common method used was to place sod on top of several layers of birch bark that had been laid on gently sloping wooden roof boards. The weight compressed the timber construction underneath, originally logs, making the inside more draught proof. This was even more apparent with the weight of winter snow on top. Another advantage was turf being quite a good insulator.
The modern method is to use bitumen roofing felt combined with dimpled plastic drainage membranes in place of birch bark. The turf is then laid over this drainage layer.
Flickr Explore # 153 on Thursday, June 29, 2017.