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Public-images-osm logo.svg surface = chipseal
Describes the surface of a feature as chipseal - fine gravel pressed into substrate such as tar. Edit or translate this description.
Group: Properties
Used on these elements
may be used on nodesmay be used on waysmay be used on areasshould not be used on relations
Useful combination
Status: in use

Many American counties pave rural roads in an inexpensive manner called "chipsealing." It is an upgrade from an unpaved, graded road but is not as smooth as asphalt.

Chipsealing is cheaper than resurfacing an asphalt concrete (surface=asphalt) or a Portland cement concrete pavement (surface=concrete), but not as long-lasting and less smooth.

Chipseals are constructed by evenly distributing a thin base of hot tar, bitumen or asphalt onto an existing pavement and then embedding finely graded aggregate into it. The aggregate is evenly distributed over the hot seal spray, then rolled into the bitumen using heavy rubber tired rollers creating a paved surface. A chip-seal-surfaced pavement can optionally be sealed with a top layer, which is referred to as a fog seal or enrichment.

In some cases chipseal surface is not distinguishable from asphalt concrete surface. In such case it is fine to tag it as surface=asphalt.

Note that this tag is rarely used and relatively unknown, most of chipseal surfaces is likely tagged surface=asphalt.


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