Crack & Joint Repair in Wiggins, CO

The high plains around Wiggins experience some of the most dramatic concrete-stressing conditions in Colorado. Unlike mountain areas where snowpack insulates the ground and moderates surface temperatures, Wiggins sits in open farmland where temperature swings between day and night can exceed 40°F in a single winter day. Concrete expands and contracts with temperature change — control joints are designed to manage this movement, but when joints fill with debris or crack filler loses its flexibility, the concrete has nowhere to go and develops new cracks on its own schedule. Compounding the temperature movement is the clay-bearing soil common throughout Morgan County. Expansive clay swells when it absorbs moisture and shrinks during dry periods, creating vertical soil movement that lifts and drops slabs. This differential movement is especially pronounced in spring when snowmelt saturates the ground, and again in late summer drought. The resulting cracks often run diagonal to control joints, reflecting the direction of soil movement rather than the concrete's thermal expansion pattern. Repairing these cracks properly requires filling with a material flexible enough to handle continued minor movement.

Concrete Doctor uses elastic polyurethane crack repair materials that remain flexible after cure — a critical difference from rigid patching compounds that crack again at the same location when the concrete moves. The repair process begins with routing or chasing the crack to create a consistent geometry (typically a V or U profile), cleaning the crack thoroughly with compressed air, and applying backer rod where needed to control the depth of fill. The polyurethane compound is then installed at the correct depth ratio to allow proper flex during thermal and soil-movement cycles. For control joints that have deteriorated — joints where the original sealant has hardened, cracked, or been contaminated — we saw-cut or rout out the failed material, clean the joint faces, install fresh backer rod, and apply new joint sealant. Functioning control joints are the concrete's designed pressure-relief valve; a joint that can no longer accommodate movement transfers that stress elsewhere in the slab and causes cracking. Our joint repair process restores this designed flexibility. After crack and joint repairs are complete, we recommend sealing the entire surface to protect the repair materials and prevent future water infiltration.

Not all concrete cracks mean the same thing, and understanding the cause shapes the repair approach. Long, relatively straight cracks that run parallel to a slab's long axis often indicate shrinkage from the original curing process — these are common in older pours and, as long as they're not widening, typically need only flexible filler and surface sealing. Diagonal cracks that cross control joints usually indicate differential settlement — one section of slab has moved relative to an adjacent section, often driven by soil movement or a sub-slab void. Cracks that are wider at one end, that show vertical displacement (one side higher than the other), or that recur after previous repairs all suggest ongoing movement rather than a one-time event. For these situations, we look at the underlying cause — soil conditions, drainage, potential voids — before recommending repair, because filling an active crack without addressing the cause is a temporary measure at best. Concrete Doctor's assessment process includes evaluating the full picture, not just filling the visible crack.

A polyurethane crack repair that's properly installed needs protection too. The flexible sealant material sits slightly recessed from the surface or flush with it, and it's exposed to the same UV radiation and temperature cycling that aged the concrete in the first place. Without a surface sealer over the repaired area, the polyurethane material will degrade faster from UV exposure than if it were protected. After completing crack and joint repairs, we apply a penetrating concrete sealer to the surrounding surface area. This sealer fills the pores of the adjacent concrete, reduces moisture infiltration near the repair zone, and provides UV protection for both the concrete and the repair material. On driveways and patios that see vehicle traffic or outdoor weathering, this step is what ensures the repair investment holds up through multiple Colorado winters rather than needing retreatment every season.