[ RETRO ROOFS]
L
z
Retrofit
your
Metal Roof
Retrofitting Can Increase Strength and Energy Efficiency
WRITTEN BY CASEY WENDELBURG
>>
Metal Overlay Systems vs. Demolition
In the current economy, building
Metal roofs have very long life spans. A study in 2007 by Ducker Worldwide
reveals the average life cycle of a metal roof is 41.6 years. However, the
owners and architects are looking
time will come when a metal roof will need to be replaced. Replacement
for ways to save money or get will be necessary sooner if subpar installation or design causes
the most value out of their
roof leaks or poor energy effi ciency. Many building owners, roofi ng
renovation projects. Retro-
consultants and architects will be faced with the need to replace
fi t roofi ng projects provide
an existing metal roof. The fi rst question that often comes to mind
is “How should I replace this roof?”. ¶ Two of the most common
a lot more benefi ts than
methods to replace an existing metal roof are demolition of the
just upgrading the look
old roof or patented sub-frame overlay systems. Demolition entails
of your building. Often,
removing all existing roofi ng materials, sometimes including the
these additional benefi ts
deck, and replacing them with new. ¶ Sub-frame overlay systems
are punched to the existing roof profi le and placed on top of the
are available at little to
existing metal roof. The new roof system is then attached to these
no additional cost. sub-frame members. These overlay systems have numerous “free”
benefi ts that often are overlooked. Consider the following:
52 FALL 2009 // RETROFIT MAGAZINE
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