Product Description
Sure Klean® Limestone & Masonry Afterwash is a mild organic acid cleaner designed to neutralize and brighten masonry surfaces that have been prewashed with Sure Klean 766 Limestone & Masonry Prewash. This product safely removes residual carbon and other stains without damaging sensitive stone or concrete surfaces.
Key Benefits
- Safe on Most Masonry: Formulated not to harm limestone, marble, concrete, or other porous materials.
- Brightening Action: Restores color vibrancy and removes haze from prewash applications.
- Economical & Easy to Use: Dilutes easily for application via brush, roller, or low-pressure spray.
- No Harsh Acids: Contains no hydrochloric (muriatic) or hydrofluoric acid.
Best For
- Limestone
- Concrete masonry
- Marble
- Prewashed surfaces with 766 Prewash
- Most porous stone surfaces
Product Properties
| Property | Specification |
|---|---|
| Form | Clear, colorless liquid with a pungent odor |
| VOC Content | Non-applicable |
| pH | 1.10 in concentrate |
| Coverage Rate | 75–400 sq ft/gal. See Product Data Sheet for variations per substrate. |
| Freeze Point | 9° F (–13° C) |
| Flash Point | >200° F (≥93° C) ASTM D 93 |
| Total Solids | Non-applicable |
| Wt/Gal | 8.50 lbs |
| Available Sizes | 1-gal, 5-gal |
| Shelf Life | 3 years in tightly sealed, unopened container |




