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In
addition, we find jack
rafters cut
short. All of the problems mentioned
here will compromise
the structural integrity of the
roof structure.
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Butt
joints in the ridge board are not
supported. These problems can all be
contributed to poor supervision
by the Builder; poor supervision
by (the) City
Inspector; and the poor quality and
lack of craftsmanship by the trades. These
problems are not unique to any one Builder. They appear to be universal
throughout the industry.
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Other
problems that we routinely find
are improperly installed roof
decking. According to The American
Plywood Association (APA)
roof decking cannot be installed
in widths less than twenty-four
(24") inches, unless it
complies with pamphlet #
R275A. We
find some of this roof decking six
inches wide. The
primary reason for not
installing
roof decking in
narrow widths is safety. A
person could easily step through the
roof or at least cause damage;
resulting in a leak to the roof. |
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We also find improperly
supported roof structures due to
lack
of purlins and struts; and improperly
supported ridge boards. |
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This
roof structure is not properly
supported. The ridge jack has
bowed and has broken! The roof is
sagging in numerous
locations. |
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Builders often
splice roof rafters. This is a
common practice. But roof rafter
splicing has to
be done properly. This next
photo shows the way not
to do it. Spliced rafters
have to be properly supported. |
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Hip
rafters need to be blocked
and supported at the ridge
board. If hip rafters are not blocked and
supported at the ridge; the hip
rafters just
lean against the end of the
ridge board with only a few
nails holding them in place! |
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There
is a craze out there for the
installation
of ridge vents. Most of
the ridge vents we see installed
are not properly installed. The openings
cut into the ridge are normally
too wide. This can cause the roof
to leak during periods of wind
driven rain. The baffles in a
ridge vent cannot over- hang the
opening. The baffles are what
keep wind driven rain from
entering the attic. |
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Limited
Visual Inspection:
Roof Structure &
Attic:
