DU-INJECT
Injection Epoxy for Structural Crack RepairDU-INJECT is a low-viscosity injectable epoxy resin for filling structural cracks in marble, concrete and stone substrates. Using a cartridge injection system, it delivers precisely controlled quantities of resin deep into narrow cracks, restoring structural integrity without surface disturbance or over-application.
Quick Product Facts
Problems DU-INJECT is built to solve.
If any of these apply to your project, you've found the right product.
Structural cracks in vertical marble panels impossible to fill by pouring
Precise dosing required to avoid wastage in narrow structural cracks
Liquid resin running out of cracks before it can be injected fully
Needing a controlled delivery system for structural crack repair epoxy
What is DU-INJECT?
DU-INJECT is a professional-grade stone adhesive from DUSH — an Italian stone care brand with offices across India. DU-INJECT is a injection epoxy for structural crack repair — DU-INJECT is a low-viscosity injectable epoxy resin for filling structural cracks in marble, concrete and stone substrates. Using a cartridge injection system, it delivers precisely controlled quantities of resin deep into narrow cracks, restoring structural integrity without surface disturbance or over-application.
Key benefits:
- Injection Delivery System
- Ultra-Low Viscosity
- Structural Restoration
- Works on Marble & Concrete
Applications:
- Marble wall crack injection
- Concrete substrate crack repair
- Structural marble restoration
DUSH is an Italian stone care brand — offices across Hyderabad, Bengaluru, Chennai and Kozhikode.
If you're searching for a reliable water based back side sealer for marble, DU-INJECT is the professional specification used by contractors and tiling companies across Bangalore, Hyderabad, Chennai and Mumbai. Problems like marble cracking after installation due to moisture are exactly what DU-INJECT is engineered to prevent. As a moisture sealer before marble installation trusted on premium marble installations across India, it provides the bond strength, open time and surface compatibility that demanding projects require. Available on Flipkart and Amazon for delivery across India.
How to use DU-INJECT.
Follow these steps for best results.
Clean the crack and drill injection ports at intervals along the crack length. Seal the crack surface with epoxy paste, leaving the ports open.
Insert the injection cartridge nozzle into each port and inject slowly. Allow resin to flow fully before moving to the next port.
Allow full cure before removing port plugs and grinding flush. The crack is structurally restored and cannot re-open under normal loads.
Pro tips & common mistakes.
Do This
- Always back-butter large marble slabs for 100% contact coverage
- Check substrate flatness with a straight edge before starting
- Mix powder adhesive with clean water only — never with additives unless specified
- Maintain a joint of at least 3mm around room perimeters for expansion
- Store unopened bags in a cool, dry place off the floor
Avoid This
- Apply adhesive to a substrate with standing water or visible dampness
- Use a trowel notch that is too small for the tile size
- Set tiles into adhesive that has already begun to skin over
- Allow adhesive to freeze on the substrate or on the tile during curing
- Ignore the open time — always work within the declared window
Why DU-INJECT works.
Injection Delivery System
Cartridge system delivers precise, controlled quantities of resin directly into the crack depth — no overspill or wastage.
Ultra-Low Viscosity
Flows deep into hairline and structural cracks by capillary action and injection pressure for thorough, complete fill.
Structural Restoration
Restores full tensile and compressive strength across the crack — a structural fix, not a surface patch.
Works on Marble & Concrete
Suitable for structural crack injection in both natural stone and concrete substrates.
Controlled Application
Injection system prevents the mess and waste of poured resins — precise dosing for professional results.
Ready to protect your stone?
Get DU-INJECT delivered or speak to a DUSH specialist.
DUSH Adhesive vs Standard Cement Adhesive
DUSH professional grade vs standard alternatives.
| Feature | DUSH Professional | Standard |
|---|---|---|
| Bond Strength | ✓ C2 class — exceeds IS 15477 requirements | ✗ Basic C1 grade — minimum standard only |
| Coverage | ✓ 4–5 sq.m/kg with consistent bed depth | ✗ 3–4 sq.m/kg with variable quality |
| Open Time | ✓ 20–30 min — allows precise tile positioning | ✗ 10–15 min — rushed application |
| Lippage Control | ✓ Anti-sag formula prevents tile height variation | ✗ No lippage control — prone to uneven results |
| Wet Area Suitability | ✓ Polymer-modified — suitable for bathrooms | ✗ Not suitable for permanently wet areas |
| Shelf Life | ✓ 12 months in sealed bag, dry storage | ✗ 6–9 months — shorter reliability window |
| Technical Support | ✓ Full DUSH technical team available | ✗ No professional support |
| Made In | ✓ Italian formula — European quality standards | ✗ Locally produced — variable formulation quality |
Injection epoxy is needed when cracks are in vertical or overhead positions where pouring is impossible, when the crack is very narrow but deep, or when precise controlled delivery is required to avoid overfilling. DU-INJECT's cartridge system provides controlled injection at any angle.
Injection epoxy is needed when cracks are in vertical or overhead positions where pouring is impossible, when the crack is very narrow but deep, or when precise controlled delivery is required to avoid overfilling. DU-INJECT's cartridge system provides controlled injection at any angle.
Drill injection ports at intervals along the crack, seal the surface, then inject DU-INJECT into each port using the cartridge system. The low viscosity resin flows through the crack by injection pressure, filling it completely. After full cure, remove ports and grind flush.
Drill injection ports at intervals along the crack, seal the surface, then inject DU-INJECT into each port using the cartridge system. The low viscosity resin flows through the crack by injection pressure, filling it completely. After full cure, remove ports and grind flush.
Yes — the cartridge injection system works on cracks at any angle, including vertical and overhead, where poured resins would simply run out before curing. The controlled delivery and low viscosity of DU-INJECT make it the correct choice for structural crack repair in vertical marble panels and wall cladding.
Yes — the cartridge injection system works on cracks at any angle, including vertical and overhead, where poured resins would simply run out before curing. The controlled delivery and low viscosity of DU-INJECT make it the correct choice for structural crack repair in vertical marble panels and wall cladding.
Where DU-INJECT is used.
Marble wall crack injection
Trusted by professionals for marble wall crack injection across India.
Concrete substrate crack repair
Trusted by professionals for concrete substrate crack repair across India.
Structural marble restoration
Trusted by professionals for structural marble restoration across India.
Vertical crack repair
Trusted by professionals for vertical crack repair across India.
Engineering-grade crack filling
Trusted by professionals for engineering-grade crack filling across India.
People also ask about adhesives.
Frequently asked questions.
12 expert answers about DU-INJECT.
◆ Precautions & Safety Notes
- Wear protective gloves during application.
- Keep out of reach of children.
- Ensure the application area is well ventilated.
- Reseal the container after use and store away from direct sunlight.
- Always patch-test on a small, inconspicuous area before full application.
- In case of skin or eye contact, rinse immediately with water.
Complete stone care, backed by Italian expertise.
Browse the full DUSH Adhesives range or speak to a specialist.