My neighbor just had a new asphalt driveway laid and a sealcoat
contractor told him he 'needs to' sealcoat the driveway 'now' to
protect it. I can't find out if that is really true or not, using
Google. Anyone know?
A reputable contractor just did my drive this week and recommended a similar
strategy. He said to wait a few months though, but to do it before winter.
Looking at the surface, I can see the logic as sealing will keep water from
going into the microcracks and freezing over the winter.
The problem is that he recommends waiting 5 or 6 months before sealing. To do a
proper sealing job, the manufacturers state that temps must stay above 50F for
24 hours. That's not going to work with the calendar.
Moreover, there are two major types of sealing. Liquid asphalt actually
penetrates the material and seals internally. The other types are easier to
apply but lay on top of the surface and can eventually flake off.
I can't recall ever seeing them seal the asphalt on city streets or
highways, have you?
For my .02, sealing just enhances the appearance, I don't really believe
it adds much to the life of the pavement.
sealing seals cracks which prevents water from getting in and doing
damage in freezing weather.
my asphalt driveway is near 25 years old and still in pretty good
shape, it gets sealed every other year on average
I worked for the highway department for 2 summers in college. One was spent
laying asphalt and the other we seal coated highways all summer long. We
were definitely not seal coating roads that had new asphalt, they were at
least 5 years old, probably more. And these were highways with lots more
traffic than any driveway would ever get.
If it was my driveway, I would wait until the asphalt needed a little help
and then seal coat to make it last a little longer without spending the
extra money on a new asphalt job.
The seal coat job that we were doing is where we would spray down a layer of
asphalt, spread gravel over the top, roll it with a pneumatic roller and
then run a sweeper to remove the excess aggregate. Did I mention that this
was in the north Texas area with lots and lots of days over 100 for both of
those summers. It was a good experience that I never ever want to do again.
"jeff_wisnia" wrote in message >
That's not the same as the "seal coating" that the OP is talking
about. I believe what you are talking about is called "chip coating"
in this neck of the woods. It is used to *extend* the life of
deteriorating asphalt roads rather than repaving since it is much
cheaper. Basically, as you say, they spray down some some low grade
oil/tar (not asphalt since asphalt by definition already includes the
aggregate) then spread gravel then either roll it in or if the town is
really cheap they wait for traffic to roll it in.
I personally hate *chip coating* since it leave the pavement very
bumpy (since the gravel doesn't get completely buried in the
underlying asphalt)which messes up inline skating for me. But it is
the cheap man's solution to repaving...
What the OP is talking about with seal-coating is typically a
latex-based superficial coat, more like a thick paint that is laid
down on top of an ashpalt driveway (although someone mentioned there
are also oil-based versions). There is no aggregate in the seal-coat.
I have heard alternative opinions about the benefits of seal-coating:
One side says it is really just superficial and is like painting your
driveway black -- looks good temporarily but does nothing physically
for the driveway.
The other school of thought says that it seals superficial cracks (you
can use other thicker similar compounds for thicker/deeper cracks) and
thus prolongs the life of the driveway. This would be especially true
in Northern climates where tiny cracks become bigger cracks with
freeze/thaw cycles. I'm not sure what the benefit is in southern
climates where there is no freezing to get into cracks.
In any case, I have been doing it about every other year (don't
believe the 7 or 10 year guarantees -- even the best stuff tends to
start chipping and cracking for me after 2-3 years here in New
England). I can say for sure that it makes my driveway look nice and
new and anecdotally that it seems to be preventing new cracks from
forming or expanding. YMMV.
From my close inspection of the 40-some driveways in this blue-collar
semi-rural sub as I make my nightly walks, recoating every 3-4 years
with the quality glop (the sand-filled kind) does seem to extend the
lifespan. It does have one big downside, though, if your driveway is
sloped, like mine is. A quarter-inch of snow, or even a heavy frost,
makes the driveway almost impassable. Already cost me one transmission.
My neighbors tried to shame me into sealing mine last year, since the
coating previous owner put on 5 years ago is pretty well gone. Being a
klutz, I try to avoid close contact with 5-gallon buckets of substances
that Don't Wash Off. So, I called a couple of driveway companies for
their free estimates. Both of them told me not to waste my money- my
driveway is too far gone and needs replacing. Given the current housing
market, I'm reluctant to sink another 4 grand into this place, much less
the 6 or 7 grand a broom-finish concrete drive would cost. (That I could
actually use in winter without having to get the leaf blower out for
every trace of snow.)
public roads cant use regular sealer because it can make roads more
slippery. so they do the asphalt gravel thing to accomplish basically
the same thing/
on the driveway too bad to seal...... call a asphalt contrasctor who
can patch cheap coat the worst areas, then wait and seal everything.
even getting a handyman type to seal your existing driveway will
prevent futher detoriation and help its appearance.
incidently new sealers are water based, stuff that gets on you is
easily washed off
half of asphalt, but they both said they would not guarantee it would
hold up. My existing drive is in really crappy shape already- painting
it with big-box sealer might make it look better from a distance, but it
probably would not help it last longer. Not smooth any more, chunks
coming out, etc. The proper repair is a rip and replace over new
substrate prep. There is one big patched spot already, where previous
owner obviously didn't do any prep underneath. And I will take an ugly
drive over buying another transmission.
I can afford a new drive, and may even break down and get it done come
fall, once their busy season is over and prices come down. But there is
SO much other stuff this place needs, and houses are not selling worth
a damn here lately. I just need to have the place presentable enough to
sell at not too much of a loss in 2-3 years when I leave town.
well you should either replace the driveway, or seal it now along with
hole patching, then a thin coat right before sales time, or a brand
new driveway at that time.
Unfortunately I dont believe the economy will bounce back much.
way too much credit card and overal debt, perhaps 10 years for a
the go go days are gone forever
well its not that recovery might be in 2099, but not likely anytime
most with retirement savings sawe it shrink by 1/2 and if recovery
begins inflation will make savings worth even less.
the after effects will take a generation to disappear
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