tack coat

(redirected from tack coats)

tack coat

[′tak ‚kōt]
(civil engineering)
A thin layer of bitumen, road tar, or emulsion laid on a road to enhance adhesion of the course above it.

asphalt tack coat

asphalt shingles: above, an asphalt shingle strip; below, installing asphalt shingles
A light coating of liquid asphalt on an existing asphalt surface or on a portland cement concrete surface; used to ensure a bond between the old surface and the overlaying course.
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3,000 tons or less, asphalt for seal coats, tack coats, prime coats and crack sealing; grades ae-90, ae- 60, cm150, ae-150, ae-200 and ae-pl dust control.