Curious...when asphalt contractors come in to put down a driveway must they kill the green grassy/broadleaf plant life before asphalting the area....because if they dont it will just weaken the asphalt overtime?
Or is this optional?
Asphalt Driveway Installation -- Should they Kill GRASS/Broadleaf before Asphalting?
I am a 17 year civil engineer with many miles of street design and construction.
1. Spray ALL weeds with a heavy duty weed killer 4 days prior to paving.
2. If rain withn 48 hours of weed killer application, reapply.
3. Gravel is not always necessary if AC is thick enough.
A driveway needs only a 4" thich asphalt over compacted dirt.
4. Make sure contractor levels and compacts the surface thourougly.
5. Spray a layer of tack coat, this makes the AC stick much better thna without.
6. Roll well after applying AC.
Reply:I think most asphalt pavers for driveways are liars. All the ones that come by my house say" we have some left over from a big job %26amp; will make a deal".
I've seen some of their work. They pave over anything that won't move out of the way.
Reply:they have to dig a foundation of some kind or scrape it, and that removes any plant life and seeds...
Reply:One would hope that any decent contractor would grade the area, probably below ground level; add crushed lime rock, or other appropriate base, then blacktop.
It's doubtful they would do any other form of foliage barrier.
It might also depend, in part; on your ability to choose the height above ground level you want the driveway to be.
Steven Wolf
Reply:If they dont kill the broadleaf stuff it will just grow back up thru the asphalt over time,
Reply:the ones i know use a grass killer its called disel fuel.then they pave over a pac material.
Reply:no, the area must be properly prepped with a layer of gravel mix first..
Reply:no the heat alone will do this
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