Why do streets not get a coat of sealant like parking lots do?

Question

Why do I see entire parking lots get a coat of sealant, but never really see streets or highways get a large coat of sealant?

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For example: [https://youtu.be/Lmd1r0P0GWE?t=192](https://youtu.be/Lmd1r0P0GWE?t=192)

In: 709

Answer 1

They do! It’s usually called a micro lift, seal coat or something similar. They put rock on it that’s like Kittie litter that provides grit. They typically do this on lower speed local roads to keep everything together for a few more years. On larger roads they’d either reconstruct or mill the surface and overlay it.