I've only looked at the first picture so far. Looking at the lower
portion of the picture, it looks like the strip along the edge nearest
the hedge is of a different color, even where the "stain" isn't present.
What was there before the pavers were installed? Contacted the
contractor? County extension service"? Any work done in the area of
the stain since the pavers were installed? I would not try any
correction or cleaning before finding out what caused the stain.
On Thu, 20 May 2010 12:10:11 -0400, " firstname.lastname@example.org"
You have a sharp eye! I hadn't noticed that before.
I just went out to take a look at that area. The pavers that are under
the hedge overhang do look cleaner or brighter than those just outside
the overhand. Then I looked up at the tree. The tree that I suspect,
actually is wider than the stain. It extends several feet toward the
bottom of the first photo. But there is another smaller tree of a
different species under it. I suspect that the smaller tree prevented
some of whatever dropped down from reaching the driveway. You can't
see it on this photo, but the stain does seem to extend to thge bottom
of the photo.
As you can see, the hedge is not straight. When we put the pavers in,
we had to make a decision about that edge. We decided to have a
straight edge on the pavers knowing that the hedge would overhang a
bit in that area. We planned to cut the hedge back to a straight line,
but haven't gotten around to it yet.
It was an asphalt driveway that was at least 40 years old. The pavers
are very close to the same footprint as the old driveway.
And ask what?
The pavers have been in about a month. The city has been digging up
the street for new utility lines. That started at least a month before
the new driveway and is still not done. But I cannot see how that
could cause a stain like this that has so many indications of falling
I may not have that luxury. My wife has a big party on Saturday. I
will be in hot water if the stain is not gone. I even suggested
parking a car in that spot.
If the contractor has been in business a while, he may have seen the
problem before. My county extension service has entomologists on staff
- they have answered all the bug questions I have taken to them. Your
issue it so peculiar, it is maddening :o) Even if it is bug droppings,
it is odd that the breeze didn't carry them into a broader distribution.
I'd try laying down white cardboard to see what lands :o) I'm a
dedicated detective and hate when I can't figure stuff out :o) Does the
neighbor on that side have a sprinkler that could hit the area? Would
have to be a mighty dose of rusty water to cause a stain in such a short
period of time.
Then you'll get oil stains and it will be YOUR fault ;o) Get a ladder
out and have your wife climb up there and see what kind of bugs are in
Guy... It is tannin from the tree... Your old driveway was
bituminous asphalt, not made out of concrete paver blocks...
Tannin stains concrete in just the manner you have described,
have you never looked at concrete sidewalks underneath trees,
or seen the oak tree acorns in the fall leave such stains after it
rains... Paver blocks are very porous, you will find that they will
stain very easily from tannins and anything you spill on the paver
area which will react with concrete...
So you can either deal with it as a fact of life having the beautiful
tree next to the driveway, you can obsessively scrub the pavers
with a concoction after a rain event when staining occurs, which
will happen more towards the beginning and ending of the growing
season OR replace your driveway with an asphalt one...
It seems very odd that it is in the shape of the tree's shadow. Wonder
if pollen could do that? Has the tree been blooming? In Florida, we
get so much oak pollen that the yellow powder can be seen on cars and
pavement. Have you tried brushing or washing it off?
Unfortunately, it's been cloudly the last couple of days. I did stand
under the tree several times. I could not see or feel anything. I also
felt as many leaves as I could reach. They were dry (not sticky) and I
could not see any insects or sap.
I also called a local arborist. He said that if it was aphids, the
stain would be black, not rust colored, and would be caused my mold (I
think). He also said it could not happen in one day.
On Wed, 19 May 2010 17:12:09 -0400, "Stormin Mormon"
Really? You think the Virgin Mary appearing in a stain on a driveway
is any different than some guy in upstate NY digging up some "golden
plates", or Native Americans coming from the Holy Land in a submarine
(clearly impossible based on DNA evidence), or god allowing a bunch of
dirty old men to take dozens of wives and then changing his mind when
Utah wanted to become a state, or several million people being
protected from satan by magic underwear?
Any chance that the rest of the pavers that were not in the shade just
dried more thoroughly from the sun and what you are seeing is higher
moisture in the ones that were shaded? A paver that feels dry to the
touch can still have higher moisture content. And moisture content
definitely affects color. Try drying one with a heat gun or hair
Mine too. I redid a little walkway with some square patio block and
crushed marble stone. I got rid of the stone and made it all block, I
had extra blocks from another location. After a rain half of the block
was dark and half was light. I redid the walkway again so when it's
somewhere between wet and dry, it looks like a checkerboard. When it's
all dry you would never notice a difference in the blocks.
Well, the pavers have been in for several weeks. We've had rain and
hot days during that period. Whether they were wet or dry, they all
looked more or less the same. No stains. Two days ago, this stain
appeared in one day. It's still there. It does not follow the edges of
the pavers. It looks exactly like the shadow of the overhanging tree.
I didn't try the heat gun, because it's not close to an outlet. I'm
going to try various cleaners today. If that doesn't work, I'll try
the heat gun, but I can't see how that would explain the stain.
Check out the photos I uploaded. (Posted to another reply.)
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