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Satellite Dish Installation
This weighty concrete anchor placed
over a single ply membrane impedes
the flexible membrane's ability to
expand and contract as the temperature
rises and falls. Eventually this
results in cracks in the membrane
which allow water into the underlying
roof structure, insulation and
building interior. Proper installation
requires a pad to be placed between the concrete and the roofing
membrane. |
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Flexible Roof Membrane Penetration
(Chalk-Circled)
This is typical of damage caused by
unregulated rooftop traffic. Over time
the freeze/thaw cycle will expand the
size of this penetration. Water enters
here, is absorbed by the underlying
roof structure and insulation, and
eventually finds its way into the
building interior.
Wet insulation increases the
building's energy consumption.
the concrete and the roofing
membrane. |
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Missing Metal Flashing Trim Joint
Most likely the freeze/thaw cycle was
the cause of loosening this missing
metal trim joint. Water can enter
here, then freeze and thaw breaking
the seal between the metal flashing
and the underlying parapet wall.
Then it can find an entry into the roof
structure and building interior. |
|
Seams between Two Different Roof Installations
Here the uneven lap between flashing
below and membrane above will allow
water to get beneath the roof
membrane and create a leak through
subsequent freeze/thaw cycles. |
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Roof Penetrations
Any roof penetration can
be the source of a leak. Here a
deteriorated flange (top) for
deflecting water from the base of
an exhaust pipe has been
repaired (bottom). |
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Pitch Pockets
On one hand pitch
pockets on a flat roof are
a good idea because they
group problematic roof
penetrations together.
But, on the other hand
they need to be constantly monitored for
cracks in the adhesive used to waterproof their
openings. |
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Roof Edge Gutters
Roof edge gutters can quickly cause
leaks from backed-up water ponding
on a flat roof's surface then finding entry
into the building interior. |
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Wall Penetrations above the Roofline
Vertical wall penetrations above flat
or low slope roofing systems are
frequently left unattended. Weisman
recently sealed the edges of this vent
as part of a routine roofing inspection
and maintenance. |
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Resealing Roof Penetrations
This two-pipe roof penetration was
recently sealed to maintain its
watertight integrity. |
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Trees Overhanging Roof
A drain scupper has been
blocked by leaves from a tree overhanging this roofing system. |
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Neglected Pitch Pocket
Here the original sealant in the
pitch pocket around a pipe roof penetration
has shrunk allowing water to pool.
Application of a modern sealant would fix this problem. |
|
Attempted Copper Theft
The high price of
copper brings out
scavengers.
Sheet copper
used as flashing
has been ripped
from a roof
penetration. |
