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Posted: Wed May 06, 2009 9:42 am
by harry
I recently had our flats' car park resurfaced on behalf of the residents.
The marks shown in the picture were left on the finished surface. We thought it was dirt, which would wash off in the first heavy rain, but that had no effect.
One of our residents even went out with a scrubbing brush and some dilute detergent, but the marks seem to be permanent.
Could someone please advise me?
Posted: Wed May 06, 2009 10:31 am
by Tony McC
From here, they look like run-off marks from the roller. In essence, dirty water has been used to wet the drums on the roller and this has transferred to the mac surface. Unless it's summat especially nasty, they should weather out in a week or two.
Posted: Wed May 06, 2009 10:44 am
by harry
Tony McC wrote:From here, they look like run-off marks from the roller. In essence, dirty water has been used to wet the drums on the roller and this has transferred to the mac surface. Unless it's summat especially nasty, they should weather out in a week or two.
Ok thanks. I've got the guy coming round this afternoon to look at three depressions that I've complained about, so I wanted to raise this as well if it should be a cause for concern.
As I said, it won't scrub off with a scrubbing brush, so I was concerned that this macadam itself ("30mm thick wearing course-AC dense surf") was tainted and the marks were there for good.
Posted: Wed May 06, 2009 8:35 pm
by Big Phil
from the pictures the marking kinda shows a poor rolling pattern, or even repeated movements of a whacker plate. if it's not dirty water, look close up and check that the surface binder hasn't been scratched off exposing the (limestone?) aggregate. either way, in most cases it is purely aesthetic and will weather in as Tony says in time - as it will all look dull & grey.
Posted: Wed May 06, 2009 9:27 pm
by Dave_L
Yeah, the rolling pattern is terrible - should have had a bigger ride-on tandem roller to finish off the surface.
The marks as Phil says looks like a limestone tarmac that has been over-rolled - nothing too much to worry about as the surface will "fade to grey".
In a way, I'd rather see some whiting of a limestone surface course, that way you know it has been compacted fully.
How did you get on this afternoon with your meeting Harry?
Posted: Wed May 06, 2009 9:45 pm
by harry
Dave_L wrote:How did you get on this afternoon with your meeting Harry?
The guy didn't turn up - he was supposed to be coming late afternoon, after finishing on site elsewhere.
At his request, I had drawn a chalk outline of the dips that needed filling - after spending quite a long time filling them with a hose. One of them is up to 25mm deep, and covers an area of about 3m * 2m.
I'm disappointed really, as I was pleased that the lowest of the three quotes came from the biggest firm.
Still, they're not getting their £3,500 until it's sorted. My real concern though is that as this isn't an area in which I have any expertise, I will never be really confident that it is sorted.
Posted: Thu May 07, 2009 6:19 am
by Dave_L
Hmmmm well that speaks volumes for the guys attitude doesn't it??
6m2 low by as much as 25mm? That's inexcusable! There is no way to repair that without it sticking out like a sore thumb - it will always be a patch on your new area.
Still, at least you haven't paid them yet.