FTER
one of the most turbulent winters in years, many
homeowners are discovering that their driveways have
fallen victim to the freeze-thaw cycle.
As snow melts, some of the
runoff seeps into cracks and crevices that may be
present in an otherwise sturdy-looking driveway. Then,
when temperatures drop back below freezing, water
trapped inside those cracks and under the driveway
expands as it freezes, causing further cracking,
crumbling and even heaving — and setting the stage for
even more water infiltration and more damage when the
next cycle occurs.
There are a number of options
for repairing or replacing a damaged driveway.
"What you have to do to repair a
driveway depends on how big the cracks and holes are,"
said John Fix, the owner of Cornells True Value
Hardware in Eastchester, N.Y.
Mr. Fix said that narrow cracks
— those no wider than one-quarter inch — could often
be filled with liquid crack-fillers sold in most
hardware stores and home centers. "If the cracks are
real deep, you should backfill them with sand first,"
he said.
Slightly larger cracks, Mr. Fix
said, can be filled with thicker material that can be
troweled into the crack. The material, a tarlike
substance with a puttylike consistency, is usually
sold in one-gallon cans and costs about $7 a gallon.
For holes in a driveway, he
said, it is usually necessary to fill the opening with
a patching material and then tamp the material down to
compress it as much as possible. Mr. Fix pointed out
that before filling a hole, any debris must be cleaned
away and any crumbling or loose asphalt removed from
the edges.
"You almost have to make it
worse to make it better," Mr. Fix said. "But the more
work you put into it, the longer the repair will
last."
Homeowners who do not have the
equipment to tamp down the patching material, he said,
can improvise.
"You can take a sheet of
plywood, put it over the patched hole, and park the
car on it for a couple of days," he said. Mr. Fix
added that in most cases, the more expensive patching
material adhered better and lasted longer than less
expensive material. "You can usually tell the quality
of patching material by picking up the bag," he said.
"The better stuff flexes; the cheaper stuff is hard as
a rock. Prices range from $5 to $9 a 60-pound bag."
While filling and patching
cracks and holes will provide temporary relief for a
problem driveway, it is difficult to make such repairs
without leaving tiny cracks and fissures that will
allow water to penetrate — and freeze — next year.
There is a way, however, to patch an asphalt driveway
and leave the surface nearly as good as new.
Thomas Eosso, an owner of Eosso
Brothers Paving in Matawan, N.J., said that a machine
that uses infrared heat to basically melt the top
three inches of driveway surface could help to make
seamless, crackless patches or even to fill depressed,
sunken areas that allowed water to puddle on the
surface.
"I've heated up 30-year-old
pavement," Mr. Eosso said, explaining that once the
surface was heated sufficiently, the asphalt had
nearly the same consistency as it did when first
installed. When that happens, he said, additional
material can be added and blended with the existing
material, and then raked and tamped for a virtually
invisible repair.
Since the heating, raking and
tamping process takes time and special equipment, the
cost varies depending on the extent of the repair,
with a minimum charge being about $500. And in some
cases, Mr. Eosso said, a driveway is in such bad
condition that the only effective solution is to
replace it.
In most cases, he said, a
standard quality driveway must have a base of at least
four inches of three-quarter-inch gravel covered by at
least two-and-a-half inches of blacktop.
"After you install the gravel,
you should let it sit at least two weeks for
settlement," Mr. Eosso said, adding that installing
the asphalt without allowing the gravel to settle will
lead to cracks and depressions in the finished
product. A contractor must also consider the soil
conditions under the driveway to install a driveway
that will last. For example, he said, while a standard
driveway will perform well on sandy, well-drained
soil, additional steps must be taken when the soil is
poorly drained clay.
For such conditions, Mr. Eosso
said, it is often necessary to excavate down eight
inches and then install a water-permeable "road
fabric" before backfilling with four inches of gravel.
"The fabric allows for drainage but keeps the gravel
from sinking into the clay," he said, adding that
after the gravel has settled, it is then topped off
with two layers of asphalt. "That's the gold
standard," he said, adding that such a driveway would
cost about $3.25 a square foot, about a dollar more a
square foot than a standard driveway.
Mr. Eosso said that there are
also a number of options for lining the edges of a new
driveway.
"Belgian Block is the best and
the most expensive," he said, referring to large,
whitish-gray stone that costs as much $20 a linear
foot. Another possibility, he said, is to set paving
stones in cement along the edges of the driveway.
"Pavers range from $14 to $16 a foot," he said.
Another popular option, Mr. Eosso said, is to use an
L-shaped metal bracket called Permalock. "It's easy to
install and it makes the edge perfectly straight," he
said, "And it only costs about $6 a foot."
Ron Belizze, president of
Yonkers Paving Concepts in Yonkers, said that there
are also options available for replacing an existing
driveway using concrete or interlocking bricks known
as paving stones.
Concrete, Mr. Belizze said,
while durable, is also expensive. "You can spend
anywhere from $6 to as much as $15 a square foot for
concrete," he said, adding that the difference would
generally depend upon the thickness of the concrete,
with the best-quality driveways being six to eight
inches thick.
Another possibility, Mr. Belizze
said, is to build a driveway out of interlocking
paving blocks. "To do pavers properly, you have to
excavate a minimum of eight inches and lay down a bed
of crushed rock and stone," he said, adding that
pavers cost $10 to $12 a square foot.
Those who want the look of stone
while paying only a bit more than they would pay for
asphalt can use "imprinted asphalt" known as
StreetPrint, which costs from $5 to $7 a square foot,
he said.
"Basically, we install a
traditional asphalt driveway and then we lay down
steel wire rope templates on the fresh pavement," Mr.
Belizze said. The templates — which act like waffle
irons — imprint a texture in the warm asphalt, giving
it the look of individually installed paving stones.
The asphalt surface is then top-coated with colored
polymer material to complete the effect. In addition
to enhancing the appearance of the driveway, Mr.
Belizze said, the polymer coating seals it and
protects against water infiltration and ultraviolet
damage.
"The coatings generally last six
to eight years," he said, adding that the driveway can
then be recoated for about $1 a square foot. "And if
it's done properly, you'd never know you were standing
on asphalt."