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One of
the biggest
mistakes
I see when
looking
at other
builders
homes is
that when
the front
concrete
porches
are poured
they are
poured right
up against
the siding.
Which tells
me that
they are
using the
siding as
flashing.
The purpose
of the flashing
is to protect
the floor
joists from
getting
wet so they
don't rot
out over
time.
The proper
way to protect
your floor
joists around
the front
porch area
is to use
aluminum
flashing
because
aluminum
will not
rust or
rot away.
If the
siding on
the home
is used
as flashing
as I mentioned
earlier,
yes it may
work for
a few years,
but what
do you do
when the
siding needs
to replaced.
For example,
cedar siding
will rot
out over
time if
it is has
concrete
poured up
against
it. Once
it rots,
no more
flashing.
If vinyl
siding has
concrete
poured up
against
it, what
happens
when it
cracks from
being kicked
or a chair
leg bumps
it.
When installing
the flashing
make sure
the bottom
of the flashing
is 3"
to 4"
inches below
the top
of the foundation.
The top
of the flashing
needs to
be at least
6"
above the
top of the
finished
concrete
porch. Cut
around door
openings
and foundation
walls. See
picture
as example.
We use
aluminum
flashing
on all our
porches
and you
should to.
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