Hot Mix Asphalt vs. Cold Patch: When the Bag Works and When It Does Not, From Alec's Asphalt Paving in Little Rock
A bag of cold patch sits near the register at the hardware store, and it looks like an answer to the hole in the driveway. Sometimes it is. For a few cold weeks it is a fair answer. For the long run it is not. Cold patch is a temporary fix, and hot mix is the lasting one. The Minnesota Department of Transportation says cold mix "should only be used for temporary fixes in small to medium potholes." Alec's Asphalt Paving, a family-owned Little Rock company started in 2015, handles asphalt repair and patching and gives free written estimates. What does cold patch do in winter? MnDOT's "Asphalt Patching Methods Best Practices" poster, drawn from its Research Report 2017-25, is plain about the limits. Cold mix "is not designed to be structurally sound for depths beyond 2 inches," and a deeper patch should go in two lifts, compacted separately. For cold mix, the same poster calls manual placement with shovels the preferred method, with compaction a...