Metzger/McGuire SRG Surface Refinement Grout
Metzger/McGuire SRG Surface Refinement Grout is a two-component, 95% solids structural polyurethane/polyurea hybrid that cures into a rigid structural polymer. It was developed to fill and repair micro-level concrete floor surface imperfections such as air holes, sand aggregate pops, surface pitting, scratches, and gouges, and is designed for commercial or retail polished concrete floors where final building temperatures range from 32°F (0°C) to 120°F (49°C). SRG can also be mixed with sand aggregate or a similar material to create a repair mortar suitable for joints, cracks, and larger surface defects. Its low viscosity allows it to penetrate very small pits and imperfections, while the cured material produces a smoother, denser floor surface that can help achieve higher gloss and DOI values. Metzger/McGuire’s industrial and polished concrete floor joint fillers, repair, and maintenance products have set the industry standard for decades.
SRG is designed primarily for fine grouting and should not be used to repair surface defects larger than 1/2″ unless modified with sand aggregate or a similar material. It is designed for use with a color pack, and depending on surface and/or environmental conditions, you may need more than one coat. Its rapid-set formula allows quick access to floor areas and grinding as early as 40 minutes after application at 70°F, or 20 minutes with an accelerator pack. The repair area should be dry because SRG reacts with moisture on damp or wet surfaces, and slight color change or shifting may occur when exposed to UV-emitting lighting sources.
Main Features
- Two-component, 95% solids structural polyurethane/polyurea hybrid
- Cures into a rigid structural polymer
- Fills and repairs air holes, sand aggregate pops, surface pitting, scratches, gouges, and other micro-level concrete imperfections
- Suitable for commercial and retail polished concrete floors
- Designed for final building temperatures from 32°F (0°C) to 120°F (49°C)
- Can be mixed with sand aggregate or similar material to create a repair mortar for joints, cracks, and larger defects
- Designed for use with a color pack
- Primarily intended for fine grouting; defects larger than 1/2″ require modification with sand aggregate or similar material
- Low viscosity penetrates very small pits and imperfections
- Creates a smoother, denser floor surface that can aid higher gloss and DOI values
- Rapid-set formula allows grinding as early as 40 minutes at 70°F
- Grinding access can be reduced to 20 minutes with an accelerator pack
- More than one coat may be required depending on surface and environmental conditions
- Repair area must be dry; product reacts with moisture on damp or wet surfaces
- May experience slight color change or shifting under UV-emitting lighting
- Compliance and Certifications: ASTM Standards
Specifications
| Property | Value |
|---|---|
| Product Type | Surface Refinement Grout |
| Form | Liquid |
| Odor/Scent | Part A: Hydrocarbon; Part B: Musty |
| Composition – Part A | 15 to 20% 1,1′,1”,1”’-Ethylenedinitrilotetrapropan-2-ol; <10% Naphtha (petroleum), Heavy Alkylate; <0.3% N-methyl-2-pyrrolidone |
| Composition – Part B | 36 to 43% Diphenylmethanediisocyanate, Iomeres and Homologues; 23–30% 4,4′-Methylenediphenyl Diisocyanate |
| Density – Part A | 1.03 |
| Density – Part B | 1.13 |
| VOC Content | 47 g/L |
| Viscosity – Part A | 300 cP |
| Viscosity – Part B | 200 cP |
Available Colors & Sizes
| Color | Size |
|---|---|
| Standard Gray | 2 gal |
| Dovetail Gray | 2 gal |
| Warm Stone | 2 gal |
| Dovetail Gray | 10 gal |
There are no reviews yet.