The
Name You Know
and Trust
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What's
the difference between Organic and
Fiberglass shingles?
Organic shingles are made on a thick felt of wood and other cellulose
fibers.Glass shingles are made on a mat of non-woven glass fibers,
which are held together with a water-insoluble binder. Both shingle
types contain asphalt and are covered with mineral granules.
The Making of a Roofing Shingle
Asphalt Roofing Products are manufactured in a continuous process
using organic felt or fiberglass mat as the core materials on which
other components are layered. The organic felt is saturated and coated
with hot asphalt and the top surface is then covered with a protective
layer of colored, U.V. resistant ceramic granules. The fiberglass
mat is coated with hot asphalt and the top surface is than covered
with a protective layer of colored U.V. resistant ceramic granules. |
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Organic
Shingles:
Have many decades of proven performance.
Are softer and more flexible than fiberglass shingles, especially
in cold weather.
Contain more asphalt and nearly always
use heavier weight reinforcement than
fiberglass shingles of similar weight. - --
Absorb roof stresses better and are more tear-resistant than fiberglass shingles.
Are typically thicker than fiberglass shingles and are better able
to hide minor imperfections in the roof deck or the old layer of shingles.
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Fiberglass Shingles
Compared with Organic Shingles:
Are relatively new.
Are more brittle
Show more imperfections in the roof deck.
Have less wind resistance.
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WHY
ARE THERE TWO TYPES?
For years all roofing manufacturers made shingles with an organic
felt mat, but as the price of asphalt rose during the early 1980's,
many manufacturers changed over to manufacturing fiberglass- based
asphalt shingles. The reason? They use substantially less asphalt
than do organic based asphalt shingles. This was done to cut costs,
not because it was a better product.
HOW CAN YOU TELL THE DIFFERENCE?
Tear a small piece of each shingle. When the fiberglass-asphalt shingle
is torn you can see the glass fiber, which looks like fine hair. When
the organic-asphalt shingle is torn, you see the black saturated mat
WHAT'S THE DIFFERENCE?
Fiberglass-asphalt shingles are limp in warm and hot temperatures.
This means they will conform to whatever they are laid over. If the
roof deck is not perfectly smooth, fiberglass-asphalt shingles will
"telegraph" or in other words, conform to the uneven surface.
The result is a rough looking roof. In colder temperatures these shingles
are brittle. Organic shingles are not limp in hot weather and are
much easier to work with in colder temperatures. They also hide roof
imperfections better.
WHICH ONE PERFORMS BETTER?
There are two characteristics that are important to keep shingles
from being blown off a roof. The first is the sealant and how well
it adheres. The second is the NAIL PULL RESISTANCE. This
is a measure of how much force is required to pull the roofing nails
through the shingle. As the wind blows over the roof peak, it creates
uplifting forces on a shingle that can pull the shingles off the roof.
This is the same type of force that gives lift to an airplane wing
and allows it to fly. A shingle with a greater nail pull resistance
is better suited to withstanding these wind forces. Organic-asphalt
shingles have greater Nail Pull Resistance as compared to fiberglass-asphalt
shingles.
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Why Take A Chance?
Insist On The Best!
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