Control joints in warehouse slabs are load-bearing seams. Without protection, forklift wheels chip the edges repeatedly until the joint becomes a hazard. Detroit Concrete fills joints with semi-rigid polyurea that bonds to both sides, supports wheel traffic, and stops the spalling cycle. Free written estimate on every project.
Concrete slabs are poured with control joints to manage cracking. The joint is a deliberate weak point where the slab is allowed to move and crack in a controlled way. In a warehouse, that joint becomes a liability. Every forklift wheel that crosses the gap drops slightly into the joint, applies point load to the edge, and breaks off a small piece of concrete. Over weeks and months, the edge becomes rounded, then chipped, then spalled.
Semi-rigid polyurea filler bonds to both joint edges and fills the gap completely. The material is stiff enough to support wheel load without compressing, flexible enough to allow the slab to move slightly with temperature. The result is a continuous surface the wheels roll across without impact. When installed as part of a new forklift-rated epoxy system or as a retrofit on existing concrete, joint filling is one of the highest-ROI maintenance moves available.
Our warehouse concrete team handles joint filling standalone or paired with floor coating projects. If joints have already spalled, we address the damage with warehouse floor repair first, then fill to prevent recurrence.
Recent work
Installation sequence
How We Install Joint Filler in Detroit
Saw and clean the joint
The control joint is cut to full depth with a specialty blade to remove debris, old material, dust and contaminants. A clean joint surface is essential for the polyurea bond to hold under forklift load.
Apply bonding primer
Both joint edges receive a bonded primer that ensures the polyurea adheres permanently to the concrete. This step prevents the filler from working loose over time under repeated wheel traffic.
Inject polyurea to depth
Semi-rigid polyurea is injected into the joint to full depth, slightly proud of the slab surface. The material is allowed to cure to the manufacturer's working window before finishing.
Shave flush and finish
The cured filler is shaved flush with the slab using a specialty blade so wheels roll across a seamless surface with no bump or lip at the joint.
Retrofit vs new install
Why Joint Filling Delivers Fast ROI
Retrofit joint filling on an existing warehouse floor is one of the fastest payback maintenance projects available. The work is completed in one or two visits, operations resume within hours of each zone curing, and the prevented spall cycle saves thousands in repair costs over the next few years. The cost is modest compared to full floor coating, making it an easy decision for any warehouse manager.
We install joint filler as a standalone retrofit or as part of a larger warehouse floor coating project. Coordinate timing with forklift-rated epoxy installation if both are planned. The combined system is bulletproof and requires minimal future maintenance.
Semi-rigid polyurea, joint depth, retrofit vs install and forklift wheel impact.
Sealant is for weather barrier; semi-rigid filler is for load support. Joints need the filler to be hard enough to transfer wheel load across the joint without compressing, soft enough to flex slightly with slab movement. Polyurea hits that target; flexible sealants do not.
Yes, and it is one of the best investments any forklift warehouse can make. The retrofit install is fast, minimally disruptive, and prevents the next several years of joint-edge spalling for a fraction of the cost of repair.
Then warehouse floor repair on the spalled edges first, then joint filling to prevent it from happening again. We can do both in one project to address the failures and prevent recurrence.
Zone by zone over a single visit or two, with forklift traffic routed around the work zone for a few hours while each joint cures. The cure is fast (hours, not days) and operations resume in each zone as soon as cure completes.
A properly installed polyurea fill lasts the life of the slab in most warehouses. Re-fill at specific joints may be needed if a joint experiences exceptional movement, but full-floor re-fill is rarely required.
Client reviews
What Detroit Warehouse Operators Say About Joint Filling
Retrofit joint fill on our existing floor before opening a new operations zone. The spalling we had been seeing every quarter has completely stopped. Best maintenance dollar we spent.
Z. U4
Warehouse Manager, Detroit
★★★★★
They explained the difference between sealant and filler clearly; the wrong material had been used before. Polyurea fill installed properly, forklift wheels roll across joints smoothly now.
Y. U4
Distribution Director, Warren
★★★★★
Installed during a single weekend across our entire warehouse. Operations resumed Monday morning, joints have held perfectly through two years of daily forklift traffic.
Q. U4
Logistics Operations, Ann Arbor
★★★★★
Combined joint filling with floor coating in one project. The combined system has held with zero failures. Coordination saved scheduling time and the result is bulletproof.
X. U4
Operations Lead, Sterling Heights
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