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Ardex RA 142 Structural Crack Injection EpoxyVendor:
Use ARDEX RA 142 for structural concrete crack injection and bonding, specifically targeting hairline to 3mm cracks. Its 190 cps low viscosity ensures deep penetration, delivering 70 MPa compressive strength to restore integrity.- $142.33
- $142.33
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Mountain Grout Gel FoamVendor:Green Mountain InternationalUse Mountain Grout Gel Foam for active water leak repairs in concrete. Its hydrophilic chemistry ensures up to 25 times expansion and high elongation for durable, flexible seals, especially under continuous water exposure.
- From $187.62
- From $187.62
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Mountain Grout FlexibleVendor:Green Mountain InternationalUse Mountain Grout Flexible for permanent crack sealing in concrete infrastructure. This hydrophobic polyurethane expands up to 30 times into a closed-cell foam, remaining flexible (44% elongation) and resistant to wet/dry cycles without shrinkage.
- From $187.62
- From $187.62
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Mountain Grout UltraVendor:Green Mountain InternationalUse Mountain Grout Flexible for permanent crack sealing in concrete infrastructure. This hydrophobic polyurethane expands up to 30 times into a closed-cell foam, remaining flexible (44% elongation) and resistant to wet/dry cycles without shrinkage.
- From $187.62
- From $187.62
- Unit price
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Frequently Asked Questions
What do you use crack injection resin for?
You use it to fill and seal active or dormant cracks in concrete and masonry. The resin bonds the crack faces and restores load transfer. Pick an epoxy for structural cracks that need stiffness, or a flexible resin where the crack still moves.
How do I seal a water leak through a crack?
Use a water-reactive leak sealant that expands or gels on contact with moisture. Inject or pack it into the wet crack so it seals from the inside. For active leaks you need a product that sets in water, not a standard grout.
What is the difference between flexible grout and gel foam?
Flexible grout stays pliable after it cures, so it handles movement without cracking. Gel foam expands into the gap and sets quickly, which helps on irregular or water-bearing cracks. Use flexible grout for moving joints and gel foam for filling irregular voids fast.
Can I inject a crack without a specialist applicator?
Low-pressure injection from a caulking gun or hand cartridge works for many accessible cracks. Deep or water-bearing cracks, wide structural cracks, and high-spec applications usually need injection packs, ports, and the right pressure. Read the product technical data first.
Do these products work on damp substrate?
Some do, some do not. Epoxy injection resins usually need a dry, clean crack to bond properly. Water-reactive leak sealants and some flexible grouts tolerate moisture or even need it. Check the product data for the substrate and moisture limit before you choose.