My 3 year macadam driveway is losing rocks in spots (forming little potholes, little because they are the shallow depth of lost single layer of gravel, see picture). The problem is that other rocks are now easily coming off around these spots.
Couple of questions – if you can tell from my photo:
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Is this anything to worry about? or is this normal wear and tear
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Is there anything to be done maintenance wise to avoid big repairs later?
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Is macadam and tar-and-chip the same thing? Is it possible to tell from my photo?
Thank you very much for any tips on above.
Best Answer
That doesn't look like asphalt or what you called macadam, it looks like what we call "modified" which is progressively smaller stone chips usually slag or limestone containing a top coating of a fine layer of the same material. After the modified stuff is compacted and weathered and run over with machinery the material resembles an asphalt or loose concrete product that is great for driveways and walkways but will become somewhat loose with age and use.