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Question DetailsAsked on 7/23/2015

How to repair a faulty asphalt sealing job?

I share a 300 ft driveway with my neighbor. Five years ago, we needed asphalt sealing. My neighbor recommended that if we wanted extra good protection, we should apply Tarconite and Jennite sealer.

In the spring after that sealing, the sealer started flaking off like peanut brittle. We contacted the company who did the job and they resealed using a standard asphalt sealer. That seal lasted a year and then the same thing happened. Since that company was so difficult, I decided to try another company. Unfortunately, their seal lasted only one season. That company came back out the next year and re-sealed a second time. However, the same thing is happening all over again.

That neighbor has since moved and now my new neighbor and I are stuck with this mess. Aside from having the driveway dug up and re-asphalted is there anything I can do?

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1 Answer


Here is a link to the Jennite specs - could not get Tarconite ones to come up at the Neyra Industries website - maybe a browser compatibility issue.

You may have a warranty claim - if you have the original paperwork check that out.

Jennite is a well-respected product, used by a lot of major corporations at multiple sites, and by government agencies and airports - not usually used for residential jobs, which may be part ofthe problem if it was put on by an uncertified applicsator.

Sounds to me like one of six things (sight unseen of course) - they put it on new asphalt that had not cured long enough (typically 6-12 months) so it did not stick, they failed to clean the surface correctly, they failed to properly prepare the surface (proper moisture level), they failed to use the specified primer first, used two dzifferent products that are not compatible (you said Tarconite and Jennite), or put it down without the sand you are supposed to mix with the Jennite.

As for fixing - if peeling, clearly it has an adhesion problem or was not mixed with the sand (or was not fully mixed prior to application). I have seen jobs like this fixed by scraping off with a road grader scarifying the surface with a scarifyling blade or with a milling machine (grinds the surface down for resurfacing), then overlaying with an overlay asphalt coat. If adhesion is real bad a high-pressure water jet or shot blasting system like is used to remove glue and paint from concrete floors might work, but you are talking a pretty good surface area for that kind of treatment. I would be looking at a paving company which has a milling machine (commercial paver, not residential) to mill the coating off, then overlay with probably a 1 to 1-1/2" overlay of hot mix topcoating asphalt mix.

Unfortunately, probably to take advantage of the warranty, you should have filed a claim the first spring. Certainly, after 5 years I would seriously doubt you have any chance of recovery now.

However, depending on local costs, that might run close to the cost of a totally new asphalt driveway - I wold recommend you get bids both ways (mill and overlahy and tear out and redo) to compare costs. I would NOT listen to any recommendations of overlaying it without totally removing it - will be a weak link that will cause loss of adhesion of any overlay.

Other alternative is to let it go a couple of years more and see if it all peels off, or at least down to the point where a bit of shot or sand blasting will remove the remant before resealing again.

Answered 4 years ago by LCD

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