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Seeding over existing driveway

Discussion in 'Landscape Architecture and Design' started by DBL, Mar 11, 2008.

  1. DBL

    DBL LawnSite Silver Member
    Messages: 2,219

    Hey guys,
    Was sizing up a job to install grass seed over an existing driveway. To me if the driveway underneath is broken up with a jackhammer (promotes drainage) into chunks it can be left in place. I'm stuck on how much dirt to put over top, obviously fill followed by topsoil but any recommendations as to how much fill?? Any advice/ comments would be greatly appreciated. Thanks.

  2. Mark Bogart

    Mark Bogart LawnSite Member
    Messages: 174

    Post a picture of the job site. Is the driveway road base, compacted soil?
  3. DBL

    DBL LawnSite Silver Member
    Messages: 2,219

    Dont have a picture handy, am going out there tommorow though, Its road base, so some modified stone/ macadam.
  4. Mark Bogart

    Mark Bogart LawnSite Member
    Messages: 174

    If it's road base I would remove it. If you break it up its still going to compact over time. A lot will have to do with how deep the road base is also. I know that if you put topsoil over road base in this part of the country - Southern Colorado - all you will end up with is a mud hole or if it doe's dry out it will turn into hardpan.
  5. Grubbworm

    Grubbworm LawnSite Member
    Messages: 20

    My state university turf expert will say you need a minimum of 6" of good soil (preferably 12") or it will never survive long term.

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