Shingle Roofs
When a roof can account for as much as 40% of the average home's exterior,
many factors weigh into the choice of materials. Some surfaces are more
beautiful than others. Some offer greater resilience or endurance. Some are
more affordable. But the one roofing surface which offers all those attributes
in balance is the asphalt shingle.
Asphalt shingles are economical and versatile, which may
be why they represent more than 80 percent of the roofing market. They're
relatively inexpensive to buy and install, are suited to roof pitches from
4-in-12 to vertical, and are available across a wide range of quality, cost, and
style. Easy to cut, fit, and fasten, asphalt shingles are compatible with many
different kinds of flashing and edging products, and don't require specialized
accessories for roof edges, wall terminations, chimney or vent
flashings.
Choosing Shingles
There are two kinds of asphalt
shingles on the market: Fiberglass shingles and organic-mat shingles. Both are
made with asphalt, but fiberglass shingles use a fiberglass reinforcing mat,
while the organic kind use a cellulose-fiber mat derived from wood. The organic
mat of traditional shingles has to be saturated with soft asphalt, then coated
with a harder asphalt for protection; the fiberglass shingles need only the hard
asphalt coating. Fiberglass shingles are thinner, lighter, easier to lug around,
and carry a better fire rating than organic shingles, but organic-mat shingles
are tougher and stay more flexible in cold weather.
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