Design fundamentals - The Hempcrete Topic: Designing and Building with Hemp-lime - page 505

Oak drip details on a hempcrete house, above the window and at the sill.
Drip details, at window ledges for example, should be appropriate for the volume of water
likely to pass over them, and should extend further from the walls than is normally seen in
conventional masonry construction, to reduce the risk of the dripping water being blown
back by wind on to the wall surface.