Control joints in warehouse slabs are load-bearing seams. Without protection, forklift wheels chip the edges repeatedly until the joint becomes a hazard. Gatineau Concrete fills joints with semi-rigid polyurea that bonds to both sides, supports wheel traffic, and stops the spalling cycle. Free written estimate included.
Concrete slabs are poured with control joints to manage cracking. The joint is a deliberate weak line where the slab is allowed to move and crack in a controlled way as temperature shifts. But an unfilled joint is also a trap for forklift wheels. Each time a wheel crosses the gap, it drops slightly into the joint, applies pressure 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 slab can still move (the filler flexes with it), but the edges are now supported and protected from wheel impact. The result is a continuous surface that wheels roll across without dropping or chipping. When installed as part of a new forklift-rated epoxy system or as a retrofit on existing concrete, joint filling is what prevents the spall cycle from starting.
This approach is standard across our warehouse concrete work. If joints have already begun to spall, warehouse floor repair addresses the damage first, then joint filling prevents recurrence. For existing floors that are still sound, retrofit filling is one of the highest-ROI maintenance investments available. See our industrial concrete services for the full range.
Recent work
Installation sequence
How We Install Joint Filling in Gatineau
Saw and clean the joint
The control joint is cut to full depth with a specialty blade to remove old filler, dust, and contaminants. A clean joint surface on both sides is essential for the polyurea bond to hold under forklift load.
Apply bonding primer
Both joint edges receive a primer coat that ensures the polyurea filler will adhere permanently. This step prevents the filler from working loose over time as the slab moves and wheels cross the joint.
Fill to full depth
Semi-rigid polyurea is injected into the joint to full depth and slightly above the slab surface. The material is allowed to cure to the manufacturer's working window before finishing.
Shave flush and finish
Once cured, the filler is shaved flush with the slab using a specialty blade. The result is a smooth, continuous surface with no bump or lip at the joint for wheels to catch.
Retrofit vs new install
Why Joint Filling Delivers Fast ROI
Filling control joints on an existing warehouse floor is one of the fastest payback maintenance projects available. The work is quick (a single visit for most facilities), the cost is modest compared to full floor coating, and the prevented spall repairs pay for the job multiple times over within two to three years of operation.
We install joint filler as a standalone retrofit on existing slabs or as part of a new warehouse floor coating project. If you are planning both joint filling and forklift-rated epoxy in the same timeframe, coordinating them in one visit saves scheduling complexity and ensures the systems work together seamlessly.
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 Gatineau Operations Say About Their 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, Gatineau
★★★★★
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, Ottawa
★★★★★
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, Barrhaven
★★★★★
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, Nepean
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Gatineau.
