Crack & Joint Repair in Matheson, CO

Concrete Doctor uses elastic polyurethane systems for crack and joint repair rather than rigid Portland cement-based fillers. The distinction matters enormously in clay-soil country: rigid fillers set hard, look good initially, and then fracture again the first time the underlying soil shifts — because the soil will shift again. Elastic polyurethane materials cure to a flexible state that can accommodate the minor ongoing movement of a slab on expansive sub-base without re-cracking. They also bond tenaciously to concrete sidewalls, creating a water-tight seal that stops the freeze-thaw infiltration cycle. For control joints and expansion joints that have lost their sealant or have never been properly sealed, we use backer rod and pourable or self-leveling polyurethane joint sealant appropriate to the joint width and expected movement. Cracks wider than a certain threshold, or those showing significant differential vertical movement between the two sides, may indicate sub-base issues that benefit from additional stabilization before surface repair. We assess each crack and joint individually during our site evaluation and propose the repair method suited to its actual condition.

The impulse to grab a tube of concrete caulk from the hardware store and fill a crack is understandable — it looks like a simple gap-filling problem. But on a slab that sits on bentonite clay, that fix typically lasts one to two seasons before the filled crack re-opens alongside or through the new material. Portland cement-based patching compounds are even worse: they cure harder than the surrounding concrete and often cause new cracks to develop at the edges of the repair as the slab continues to move and stress concentrates at the rigid patch boundary. Elastic polyurethane repair materials work differently. They're formulated to elongate under tension — meaning when the slab shifts and pulls the two sides of a crack apart, the sealant stretches rather than fractures. The bond to concrete sidewalls remains intact through that movement. In practical terms, an elastic repair in an Elbert County slab can flex through years of seasonal soil movement and still be performing its primary job: keeping water out of the crack.

Most concrete slabs have tooled or sawn control joints — intentional linear weaknesses designed to concentrate cracking at predictable locations where it's easier to manage. On older slabs in the Matheson area, these joints often have failed, cracked, or missing sealant that allows water infiltration even before random cracks develop elsewhere. Properly maintaining control joints is one of the most cost-effective things a property owner can do to extend concrete service life in freeze-thaw country. Our joint repair process involves cleaning out deteriorated old sealant, installing backer rod to control the depth of the new material, and applying a self-leveling or pourable polyurethane joint sealant sized for the width of the joint and the expected movement range. For joints wider than standard from slab shifting or shrinkage, we may need to rout the joint to a consistent width before sealing. The goal is a joint that moves freely without admitting water — the same basic function it had when the slab was new, restored without removing or replacing the concrete.

Matheson property owners dealing with concrete cracks often put off calling because they assume the repair will be expensive or that someone needs to come from Denver to do it right. Concrete Doctor is a family-owned Lakewood company that makes the drive to Elbert County because quality crack repair is exactly the kind of work that saves homeowners money in the long run. A $500 crack repair today prevents the $5,000 resurfacing or slab replacement that results from years of unchecked water infiltration. Call (303) 988-2558 to schedule a free estimate and let us take a look at what's going on with your concrete.