Please, Mr. or Ms. Architect, No More Roof Geometry Like This
I don’t know how many times we have been contacted to evaluate interior water damage (Figure NMRG-1) that was a result of poor roof geometry.
Figure NMRG-1 Typical water streaks on wall.
Many times examination of the roof and/or the siding on the exterior reveals the obvious cause of the water streaking. See Figures NMRG-2 through NMRG-5.
Figure NMRG-2 Valley directs runoff to back of downspout that is tight to roof.
Figure NMRG-3 Valley drains into back of downspout.
Figure NMRG-4 There is no direct path for roof runoff to drain from the roof.
Figure NMRG-5 And this has been going on for a LOOOONG time.