Cracked asphalt isn't simply a sign that pavement is "getting old" — it's a symptom with a specific cause, and the right fix depends entirely on which cause is at work. Patching over the wrong kind of crack is one of the most common ways property owners end up paying for the same repair twice. Here's what's actually happening underneath, and how to fix it the first time.
UV Oxidation: The Slow Killer
Albuquerque's high elevation means more direct UV exposure than most of the country gets, and UV breaks down the petroleum binder that holds asphalt aggregate together. As the binder oxidizes, the surface dries out, turns gray, and becomes brittle enough to develop fine surface cracking under normal traffic. This type of cracking spreads gradually across the whole surface rather than concentrating in one spot.
Freeze-Thaw Cycling
New Mexico isn't thought of as a harsh winter climate, but Albuquerque still sees real freeze-thaw cycling, especially overnight temperature drops in fall, winter, and early spring. Water that's worked its way into a small crack expands as it freezes, widening the crack from the inside — a process that repeats every cold night until a hairline crack becomes a structural one.
Base Failure and Alligator Cracking
When the layer underneath the asphalt — the compacted base — settles unevenly, weakens from water infiltration, or was never compacted correctly during installation, the surface above it cracks in an interlocking, tile-like pattern known as alligator cracking. This is a structural problem, not a surface one, and it's the single most common cause of a crack seal "not working": you can't seal a base failure from the top.
Tree Roots and Edge Cracking
Cracking that runs along the edge of a driveway or parking lot, especially near landscaping, is frequently root intrusion pushing up from underneath rather than weather-related wear. This pattern needs the root addressed as part of the repair, or the same crack reopens within a season.
The Fix: Matching Repair Method to Cause
Straight, linear cracking from oxidation or freeze-thaw is exactly what crack sealing is designed for — a hot rubberized sealant is applied into the crack to keep water out, and it's a same-day fix in most cases. Alligator cracking and base failure need the affected section cut out and repaired down to a stable base, sometimes followed by an asphalt overlay across the surrounding area to blend the repair in. Root-related edge cracking needs the root managed, not just the crack filled, or the fix won't hold.
How Fast Is "Quickly"?
Small linear cracks caught early are typically sealed in a single site visit. Base failures and alligator cracking take longer because the repair has to go deeper than the visible crack, but catching them before monsoon season adds more water infiltration is what keeps a two-day patch job from becoming a full section replacement.
Patriot Asphalt and Construction provides crack sealing, asphalt patching and repair, and full-depth pavement repair for residential and commercial properties throughout Albuquerque, Rio Rancho, Santa Fe, Los Lunas, Belen, Bernalillo, Placitas, and Moriarty. Identifying the actual cause before repairing is what separates a fix that lasts from one you'll be paying for again next year.
