Hi there. Gaulhofer Windows only contributed the windows and doors to this home, so I don't have much info about the rest of the project. But I will say that this home is located in a very snowy region, and the home owner is an architect, so I'm sure drainage was taken into account. :)

What a work of art! This house is so well integrated to the mountains with it's juts and peaks. Perfect mix of materials,etc.

it's not very clear from the photos , but is the roof dark gray?

Looks like an engineering and flashing nightmare in that huge roof valley. Massive snow loading potential and problem area for wetting and leakage. I'd never do it. Looks nice though.