Poking holes in metal roofs invites
leaks. And with pre-engineered standing-
seam metal roofs, the contractor
can easily get caught without the
protection of a manufacturer's
warranty. That's because these roofs are
designed at a factory – and it's next to
impossible to design for every problem
that can occur in the field.
Before signing up to install a
manufacturer's roofing system, the
contractor had better take a good
close look at the details. Wherever
pluming vents, skylights, scuppers, or
parapet walls penetrate or join the
roof, there's a chance leaks will occur.
These roof penetrations can also cause
the roof to self-destruct. If the
manufacturer's manual shows these
roof penetrations clearly, and if the
details make sense, the contractor