Hanging hill roofs 悬山顶 xuánshāndǐng have two straight overhanging slopes.
Why do buildings in asia have red and blue roofs.
There are a few reddit threads devoted to the number of blue roofs in korea.
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.
Anyway everybody can choose their favorite colors for roofs in japan.
This is strikingly different from most western roofing systems they put a lot of stress on the outer walls.
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.
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.
It doesn t mean many.
Most now are grey but there are some that are orange.
Commercial roofs are flat roofs because they are much more cost effective compared to pitched roofs.
They were one of the most frequently used roof designs for more well to do premises in china.
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.
Don t know why but those seem to be the only colors that material comes in.
China has many blue roofs because the government controls all construction projects.
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.
It also allows businesses to store and service a c units.
Like other answers i don t agree with your assumption that many buildings have blue roofs.
They were third grade roofs after hip roofs and resting mountain roofs.
Blue roofs i could find were only 2.
Most buildings have gray or brown roofs.
South korea s presidential home is the blue house named for the hue of its roof tile some redditors speculate that.
The most obvious feature is eaves overhanging the gable walls by three tenths of the wall.