An open eave has a pronounced overhang often revealing projecting roof beams or brackets.
Modern roof overhang detail.
But in a traditional modern hybrid like this.
A box eave is enclosed with a soffit.
Notice how the eave and rake overhangs of traditional gable roofs is eliminated for a clean edge profile where the wall siding butts right up to the roof flashing.
The gable roof design in the example below is simple clean and modern.
They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation.
The roof plays a primal role in our lives.
There is no good way to make that last.
But are they really necessary.
Martin and jon are right that a roof overhang is the best way to protect the siding.
A roof can come to an end in basically three ways.
In the czech republic a1architects built a lakeside charred timber teahouse with a substantial roof overhang to ensure that the outbuilding would be a modern micro space beautiful and cozy and comfortable to stay in for hours.
Roof overhangs might look relatively routine but there is a lot of design thinking that goes into creating the optimal dimensions for each one.
Roof overhangs at the eaves and rakes protect the walls below from rain and sun.
There is also no gutter in the detail so you will be effectively routing rain down your wall.
Photograph courtesy of rever drage.
The most primitive buildings are nothing but a roof.
Wall section detail corten steel detail gutter detail landscape detail parapet detail parapet stucco detail rainscreen detail roof overhang.
A closed eave has very little or no overhang extension beyond the siding.
Christopher alexander writes in the pattern language no.
Powered by an electric motor the retractable roof slides back and disappears.
With that in mind we kept a roof overhang at the eaves as it provides a nice shadow line and protects the second floor windows from a bit of the summer sun.
It feels that there is a common opinion among architects that this minimal look is the thing.
Doing so keeps basements and crawlspaces dry and it also helps to.
Most modern cabin architecture out there seems to be eaveless meaning that there is no or very minimal roof overhang eaves that go beyond the building structure.
I can understand not wanting one with a flat roof but the sloped roof without overhang i never understood.