Dormer:
a framed
projection
through the
sloping
plane of a
roof.
Downspout:
a conduit
for
carrying
water from
a gutter,
scupper,
drop outlet
or other
drainage
unit from
roof to
ground
level.
Eave:
a roof edge
that
extends out
past the
exterior
wall line.
Gable:
a
triangular-shaped
portion of
the end
wall of a
building
directly
under the
sloping
roof and
above the
eave line.
Gable
Vent:
a vent
place in a
gable for
use in
conjunction
with
under-eave
soffit
ventilation
to provide
attic
ventilation
for a
building.
The vent
system
should be
installed
at a one to
one (1:1)
ratio.
Gutter:
a channel
(usually
sheet
metal)
installed
along the
downslope
perimeter
of a roof
to convey
runoff
water from
the roof to
the leader
pipes or
downspouts.
Hip:
the
external
angle
formed by
the
intersection
of two
sloping
roof
planes.
Leader
Pipe: a
conduit for
carrying
water from
a gutter,
scupper,
drop outlet
or other
drainage
unit from
roof to
ground
level. Also
known as a
Downspout.
Rake: the
sloped
perimeter
edge of a
roof that
runs from
the eaves
to the
ridge. The
rake is
usually
perpendicular
to the
eaves and
ridge.
Ridge: the
line where
two planes
of roof
intersect,
forming the
highest
point on
the roof
that runs
the entire
length of
the roof.
Valley: the
internal
intersection
of two
sloping
roof planes
that runs
from the
eaves to
the ridge.
This
intersection
collects
the most
water
run-off.
