China has many blue roofs because the government controls all construction projects.
Why do buildings in asia have red and blue roofs.
Hanging hill roofs 悬山顶 xuánshāndǐng have two straight overhanging slopes.
It doesn t mean many.
The aluminum sandwich panel buildings they sometimes use here cheap last 10 20 years used for industrial or storage purposes sometimes stores beside the highways all seem to have beige walls and blue roofs.
Like other answers i don t agree with your assumption that many buildings have blue roofs.
Anyway everybody can choose their favorite colors for roofs in japan.
The most obvious feature is eaves overhanging the gable walls by three tenths of the wall.
They were one of the most frequently used roof designs for more well to do premises in china.
Korean professor regarding the 70s and living in korea presently.
The blue roofs were popular aesthetically for a short period in the 1970s but you don t see new buildings these days with blue roofs.
There are a few reddit threads devoted to the number of blue roofs in korea.
Don t know why but those seem to be the only colors that material comes in.
Blue roofs i could find were only 2.
They were third grade roofs after hip roofs and resting mountain roofs.
Commercial roofs are flat roofs because they are much more cost effective compared to pitched roofs.
It s easier to put a sloped roof on a small residential home but to do the same on a very large commercial building would be impractical dangerous and difficult.
It is just more simple to have one roofing supplier that makes a uniform colored prouct than many suppliers who have different products that are differently priced and have varying quality.
The roofs in both of the above photos show what liang ssu ch eng in chinese architecture called the immediately outstanding feature of chinese architecture.
After reading your question i checked roofs around my apartment.
Most buildings have gray or brown roofs.
It also allows businesses to store and service a c units.
Most now are grey but there are some that are orange.