Overview

The Dulux Avista Epoxy Concrete Crack Repair is a two-part, high-strength epoxy for the permanent structural repair of cracks in concrete. The 1.5L kit provides a flowable, self-levelling compound that penetrates deep into hairline and structural cracks, bonding to the concrete to restore strength and stop water ingress.

It is an essential preparation step before sealing or coating concrete, because a filled crack means the new coating does not telegraph through and moisture cannot undermine it from beneath. Once cured it is compatible with all the Dulux Avista sealer and coating systems.

Key Features

• Two-part structural epoxy for permanent crack repair
• Low viscosity flows deep into fine cracks
• Bonds strongly to clean, dry concrete
• Seals cracks against water ingress
• Paintable and sealable once cured
• 1.5L kit for spot repairs before surface sealing

Specifications

• Pack size: 1.5L kit
• Crack width: hairline to medium cracks up to about 5mm
• Application: pour or inject into the crack, overfill slightly
• Surface: clean, dry concrete only
• Overcoat: Dulux Avista sealers, epoxies and urethanes once cured

Applications

• Filling cracks in driveways and paths before sealing
• Repairing garage and workshop floor cracks before epoxy
• Sealing cracks in patios and alfresco areas
• Preparing damaged concrete for resurfacing

What You Need to Complete the Job

Clean and dry the crack, chase it slightly with an angle grinder for a key, then pour or inject the mixed epoxy and let it cure. Fill any wider spalls with the Patch Repair Compound before coating. Once the repair is cured, seal or coat with the Dulux Avista system, such as the Waterbased Epoxy for a floor. Coatings are in the Concrete Sealers range.

Frequently Asked Questions

What size cracks can this repair?

The epoxy suits hairline to medium cracks up to about 5mm wide. Its low viscosity lets it penetrate fine cracks that surface fillers cannot reach. For wider cracks or structural joints, use a sand-filled epoxy mortar or consult a concrete repair specialist.

Can I apply a sealer or epoxy over the repaired crack?

Yes. Once fully cured, the epoxy repair can be sanded flush and overcoated with any Dulux Avista sealer, epoxy, urethane or polyaspartic system. This is the recommended workflow: repair the cracks first, then coat the whole surface for a seamless finish.

Will the repair be visible after sealing?

The repair shows as a slightly different texture and colour against the surrounding concrete, which is normal and unavoidable with crack repairs under a clear sealer. For a completely uniform appearance, use a coloured or tinted sealer, a resurfacing compound or a flake floor that disguises the repair.

Can I use this outdoors in wet conditions?

No. The crack and the surrounding concrete must be completely dry before application. Moisture stops the epoxy bonding and can make it foam or fail to cure. If water is seeping through the crack, deal with the water source first before repairing.