-
Ardex RA 142 Structural Crack Injection EpoxyVendor:
For pressure injection and gravity feed structural crack repair in horizontal concrete and masonry, ARDEX RA 142 seals and bonds hairline to fine cracks from 0.05mm to 3mm. This two-component, 100% solids epoxy adhesive has a super low viscosity that penetrates deep into fine...- $142.33
- $142.33
- Unit price
- per
-
Mountain Grout Gel FoamVendor:Green Mountain InternationalMountain Grout Gel Foam is a hydrophilic polyurethane injection grout designed to stop active water leaks through cracks and joints in concrete. It reacts with water inside the leak path, expanding into a flexible foam or gel to seal areas that remain consistently wet.Where...
- From $187.62
- From $187.62
- Unit price
- per
-
Mountain Grout FlexibleVendor:Green Mountain InternationalMountain Grout Flexible is a hydrophobic polyurethane injection grout for sealing active leaks through cracks and failed joints in concrete. When it reacts with water, it expands into a flexible, closed-cell foam that is suited to structures exposed to changing water levels and wet/dry...
- From $187.62
- From $187.62
- Unit price
- per
-
Mountain Grout UltraVendor:Green Mountain InternationalMountain Grout Ultra is a higher-elongation, hydrophobic polyurethane injection grout for stopping water leaks through cracks and joints where movement may occur. On contact with water, the injected resin expands into a flexible closed-cell foam that maintains its form through wet/dry cycles.Where it works...
- From $187.62
- From $187.62
- Unit price
- per
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.