Driveway Repair & Resurfacing in Longmont, CO

A significant share of Longmont's residential driveways were poured in the 1960s, 1970s, and 1980s — decades when residential concrete work was commonly done with thinner slabs, fewer control joints, and no sealer applied at the end of the pour. Those driveways have now been through 40 to 60 years of Colorado winters, and many show the accumulated damage: surface scaling, transverse cracking at control joints that have widened over time, and in some cases differential settlement where the slab has dropped or heaved in sections due to the clay subgrade shifting. Newer Longmont subdivisions — particularly the developments along Ken Pratt Boulevard, Sunset Street, and the eastern growth corridors — are encountering a different problem: driveways that are only 10 to 15 years old but were sealed poorly or not at all, leaving them exposed to the mag-chloride and UV damage that starts showing up within the first decade. In either case, the question is the same: is the structural concrete still sound enough to justify repair and resurfacing, or has damage progressed to the point where replacement is the only viable path? We answer that question honestly, without defaulting to whichever option is more profitable.

Our driveway repair process is determined by the assessment findings. For surface scaling and shallow spalling on a structurally sound slab, we diamond-grind or shot-blast the damaged layer, remove loose material, and apply a polymer-modified resurfacing overlay — typically 1/8 to 3/8 inch thick — that bonds to the prepared substrate and delivers a fresh concrete-look surface. Cracks are routed and filled with elastic polyurethane before the overlay goes down, ensuring they don't telegraph through the new surface. For driveways with moderate cracking but intact structure, we may recommend crack injection and sealing rather than full resurfacing — a less expensive intervention that addresses the immediate problem without the full scope of an overlay project. For driveways with significant settlement or heaving, we assess whether mudjacking or polyurethane slab lifting can correct the geometry before we coat. In cases where the subgrade has genuinely failed or the slab is fractured beyond practical repair, we'll say so and help the homeowner understand what replacement would involve. The goal is to find the right answer, not the most expensive one.

Property owners often postpone driveway repair because the damage doesn't seem urgent — a few cracks, some surface scaling, maybe a chip at the edge near the street. But in Longmont's climate, deferred maintenance has an outsized cost. Each winter that water enters an open crack, freezes, and expands widens the crack by a measurable amount. Each spring, another layer of surface concrete flakes off. Within a few seasons, a driveway that was a good resurfacing candidate becomes a slab that needs replacement. The economics shift sharply between those two outcomes. A resurfacing project on a sound slab might cost 30 to 50 percent of replacement. Once the slab has deteriorated past the point where repair is viable, you're into demolition, disposal, form work, new pour, and a 28-day cure period. The disruption is greater, the cost is higher, and the timeline is longer. Acting on moderate driveway damage in Longmont is almost always the financially sensible choice. We see this progression play out consistently across Longmont's older neighborhoods. Homeowners who address surface scaling and minor cracking early — before subgrade movement or advanced delamination develops — spend less money and get better long-term outcomes than those who wait. If your driveway is in that middle stage of damage, now is the right time to get an assessment.

The driveway apron — the section where the driveway meets the public sidewalk or street — is typically the highest-stress zone on any residential driveway. Traffic loads from vehicles entering and exiting flex the apron repeatedly, drainage runs toward the street and concentrates at the low point, and road chemicals from the street migrate directly onto this section. Apron spalling and cracking is one of the most common repair requests we receive from Longmont homeowners. Apron repairs need to account for the transition between the driveway slab and the street, which often involves a height difference or a saw-cut joint. We repair apron sections using high-strength repair mortars, restore the joint between the apron and the street to proper geometry, and seal or coat the repaired area to match the rest of the driveway. In some cases the apron section needs to be partially replaced rather than resurfaced — we make that call based on what we see, not based on which option generates more revenue.