Expansion and building joint sealing
Aged joint sealant loses adhesion at the substrate edge, so floor, wall, and walkway joints open and let water and debris into the structure.
The need for expansion and building joint sealing
BHI Coatings performs expansion and building joint sealing across Alvin and the Texas Gulf Coast. Old sealant lets go at the substrate edge and pulls away from the concrete. Floor, wall, and walkway joints open, and water and debris go straight into the structure. From there the water corrodes rebar and undercuts the slab on both sides of the joint.
How BHI Coatings does expansion and building joint sealing
Our crew cuts out the old sealant, preps the joint faces, then reseals expansion and building joints with a flexible compound that bonds to concrete, stone, and brick. Belzona 2211 and 4521 support the flexible joint and substrate-repair work. The material cures cold and stays elastic, so it moves with the joint instead of cracking across it.
Typically applied with Belzona 2211, Belzona 4521, matched to the service conditions.
The joint moves with the structure and keeps water out, and it reopens to foot or wheel traffic the same shift.

More Concrete & Flooring applications
Acid attack eats into retaining walls, drains, and channels, thinning concrete and opening leak paths into the substrate and surrounding ground.
Learn more →Chemical-resistant industrial floorsProcess floors and containment areas take acid, alkali, and mechanical attack that strips ordinary toppings and lets product reach the substrate.
Learn more →Concrete and masonry repair and resurfacingSpalled slabs, cracked walls, and deep concrete loss expose rebar and weaken structures, channels, and openings across a plant.
Learn more →Elevator pit concrete rebuild and sealingElevator pits collect groundwater, lubricant, and cleaning chemicals, spalling the concrete and pooling water near electrical components.
Learn more →Exterior slab and sidewalk repairSidewalks and exterior slabs crack and spall each freeze-thaw cycle, widening into trip hazards and liability exposure on public and plant grounds.
Learn more →Potable-water concrete repairConcrete in drinking-water tanks and channels degrades, but any repair material has to be certified safe for contact with potable water.
Learn more →All 10 in Concrete & FlooringThe whole capability in one place, with the work grouped.
See the capability →Contact BHI Coatings
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