The word asphalting is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 19
Highest Scoring Words With Friends™ Play In The Letters asphalting
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Seven Letter Word Alert: (22 words)
against, alights, anglist, asphalt, halting, hatpins, lapsing, lashing, lasting, lathing, pasting, patinas, phasing, plating, plights, salting, saltpan, sapling, shaping, slating, spatial, tapings