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Avanti AV-202 Multigrout 1 Gallon
Avanti AV-202 Multigrout is a single component, moisture activated MDI/TDI blended polyurethane injection resin. Designed for sealing active water leaks in large cracks or joints in concrete structures, it can absorb up to 10 times its weight in water, creating a tough and impermeable seal.
- Stops active water leaks fast
- Used successfully in manhole sealing and pipe penetrations
- Excellent choice for moving cracks and joints
$220.14
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Avanti AV-202 Multigrout Hydrophilic Polyurethane Grout, 1 Gallon (AV-202-1)
Avanti AV-202 Multigrout is a moisture-activated hydrophilic polyurethane injection resin for sealing active leaks in large cracks and joints. It is a high-viscosity MDI/TDI blend for concrete and brick when water is already moving, including manholes and pipe penetrations. The grout can take up to ten times its volume in water, expands as it cures, and stays flexible on moving joints. WQA certifies it against NSF/ANSI/CAN 61.
Key Features
- Single-component, moisture-activated hydrophilic polyurethane (MDI/TDI blend).
- Tested and certified by WQA against NSF/ANSI/CAN 61 Drinking Water System Component.
- 100% solids and non-corrosive.
- Free-rise expansion of 300% to 600%.
- Accepts up to 10 times its volume in water.
- High viscosity of 3,200 to 6,200 cP at 72°F (22°C).
- Cures flexible with excellent adhesive properties.
- May be pumped as a single component without pre-mixing.
- Grouting techniques include Expanded Gasket Placement (EGP), Needle Penetration (NPT), and Variable Pressure Application (V-PAT) crack injection.
- Optional AV-203 Multicat cream and gel-time accelerator (not NSF/ANSI/CAN 61 certified when used).
Applications
- Large cracks or joints in concrete and brick.
- High-volume water flow where a high-viscosity chemistry is required.
- Manhole sealing and pipe penetrations.
- Moving cracks and joints.
- Use with AV-215 Resin Rod or AV-219 Fibrotite (oakum).
- Underwater applications.
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer / Product Name | Avanti International AV-202® Multigrout hydrophilic polyurethane grout |
| TDS Revision | Rev. 07.2026 |
| Part Number | AV-202-1 |
| Formulation | Single-component, moisture-activated MDI/TDI blended polyurethane injection resin. Uncured: brown resin. Cured: milky colored, flexible. |
| Water-to-Resin Ratio | Preferred 1:1 for a strong, impermeable bond; effective up to 10:1 as a gel. May be pumped as a single component without pre-mixing. |
| Viscosity | 3,200 to 6,200 cP at 72°F (22°C) |
| Flash Point | 253.4°F (123°C) |
| Specific Gravity | 1.090 at 72°F (22°C) ± 3% |
| Density | 9.09 lbs. per gal. ± 3% (1.090 kg/L ± 3%) |
| Free-Rise Expansion | 300% to 600% |
| Water Uptake | Up to 10 times its volume in water |
| Certification | WQA NSF/ANSI/CAN 61 Drinking Water System Component |
| Use Temperature | 60°F to 90°F (16°C to 32°C). Warm to about 72°F (22°C) if site temperatures are low. Do not use an open flame as a heat source. Viscosity can rise significantly at 45°F (7°C). |
| Cream / Gel at 1:1 (lab) | 40°F: 0:39 / 2:47; 50°F: 0:35 / 1:54; 60°F: 0:29 / 1:39; 70°F: 0:21 / 1:12; 80°F: 0:17 / 0:47 (min:sec). Cream time is not applicable above 1:1. Field times vary with site water. |
| Tensile Strength / Elongation | Consult Avanti representative |
| Storage | 45°F to 95°F (7°C to 35°C), dry. Keep tightly closed. Packaged under dry nitrogen. Do not store catalyzed grout mixed with AV-203. |
| Shipping | Not regulated under US DOT Regulations |
| SDS | AV-202 MULTIGROUT, last revision September 15, 2021 |
| Packaging | 1 gallon container, 8.8 lbs. (4.0 kg) net. Cartridge approximately 10.1 fl. oz. (approximately 300 ml), case of 12; pail 44 lbs. (20 kg); drum 484 lbs. (219.5 kg) also listed on the TDS. |
Product documents: AV-202® Multigrout Technical Data Sheet (PDF) | AV-202® MULTIGROUT Safety Data Sheet (PDF)
Frequently Asked Questions
Can AV-202 grout brick as well as concrete?
Yes. AV-202 is engineered to seal active water leaks in large cracks or joints in concrete and brick structures. The resin seeks moisture in the pores of either substrate and adheres as it expands.
Can AV-202 be used with AV-219 Fibrotite oakum?
Yes. AV-202 is used in conjunction with AV-219 Fibrotite oakum or AV-215 Resin Rod for Expanded Gasket Placement. The resin wets the oakum and cures into a flexible gasket in the joint.
Does cured AV-202 stay flexible?
Yes. AV-202 cures flexible with excellent adhesive properties. That flexibility is why it is used on moving cracks and joints instead of a rigid foam.
Does AV-202 form a compressive seal as it expands?
Yes. AV-202 reacts with moisture, expands, and packs a compressed network into the crack. That compressive lock, plus adhesion to the wet substrate, is how the TDS describes the seal.
Is AV-202 the grout for high-volume water where high viscosity is required?
Yes. AV-202 is designed for applications where high-volume water flow is an active or potential problem and a high-viscosity chemistry is required. Typical viscosity is 3,200 to 6,200 cP at 72 F.
Can AV-202 be used on a drinking-water structure?
Yes. AV-202 is tested and certified by WQA against NSF/ANSI/CAN 61 Drinking Water System Component. Using AV-203 Multicat with AV-202 is not NSF/ANSI/CAN 61 certified.
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