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WR Meadows LIQUI-HARD 55 Gallon Drum
WR Meadows LIQUI-HARD is a water-based, ready-to-use clear silicate densifier and chemical hardener in a 55 gallon drum. It penetrates concrete and reacts to fill the pores, hardening and dustproofing the surface.
- Covers 300 sq ft/gal on fresh concrete, 200 sq ft/gal on existing concrete
- VOC content 0 g/L; treated surface is USDA accepted
- Can be burnished to a high sheen on steel-troweled floors
$1,772.90
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WR Meadows LIQUI-HARD 55 Gallon Drum
WR Meadows LIQUI-HARD is a proprietary, water-based, clear silicate liquid intended to harden and dustproof concrete. As it penetrates, a chemical reaction produces a byproduct that fills the pores, leaving a denser surface that raises abrasion and chemical resistance and eliminates dusting and pitting. It is used in industrial plants, warehouses, and heavy pedestrian traffic areas, and with shake-on hardeners. This 55 gallon drum covers about 16,500 sq ft on fresh concrete or about 11,000 sq ft on existing concrete.
Key Features
- Penetrates deeply to densify and harden the surface against moisture and foreign matter
- Dustproofs and raises chemical, petroleum, and abrasion resistance
- Leaves a permanent sheen that can be polished or burnished
- Will not after-yellow, discolor, or show traffic wear marks
- Ready to use from the container; 0 g/L VOC
Applications
- Industrial plant and warehouse floors
- Storage silos, sewage plants, chemical processing facilities, and refineries
- Civic centers, arenas, stadiums, hospitals, airports, and museums
- Floors finished with shake-on hardeners
Technical Specifications
| Property | Value |
|---|---|
| Chemistry | Water-based clear silicate densifier and chemical hardener |
| Coverage, fresh concrete | 300 sq ft/gal (when used as a curing aid) |
| Coverage, existing concrete | 200 sq ft/gal |
| Coverage per drum | About 16,500 sq ft fresh, or about 11,000 sq ft existing |
| VOC | 0 g/L |
| VOC compliance | U.S. EPA, LADCO, OTC, SCAQMD, and other current North American VOC rules |
| Tested to | ASTM C779, ASTM F150, ASTM F609, ASTM G155, Taber Abrasion |
| Other | Treated surface USDA accepted |
| Dwell time, existing concrete | Keep wet 30 to 60 minutes, then flush |
| Drying time | 2 to 4 hours |
| Foot traffic | At least 4 hours, 12 hours preferred |
| Burnishing | High-speed burnisher, 2000 to 2200 rpm |
| Shelf life | 1 year unopened, stored indoors at 40 to 90 F |
| Pack | 55 Gallon Drum |
| Part number | 3325055 |
Product documents: WR Meadows LIQUI-HARD Data Sheet (PDF)
Frequently Asked Questions
What coverage does the LIQUI-HARD 55 Gallon Drum give?
300 sq ft per gallon on fresh concrete (used as a curing aid) and 200 sq ft per gallon on existing concrete, or about 16,500 or 11,000 sq ft for this 55 gallon drum. Rates vary with the finish and porosity of the concrete.
How is LIQUI-HARD applied to existing concrete?
The surface must be clean and thoroughly dry. Saturate it with undiluted LIQUI-HARD by sprayer, squeegee, or broom and keep it wet for 30 to 60 minutes. When it starts to gel and turn slippery, mist with water and scrub for another 5 to 10 minutes until it gels again, then flush thoroughly with water and squeegee the floor dry.
Does excess LIQUI-HARD need to be removed?
Yes. Failing to wash off all excess material can leave white stains. Slippery patches mean excess remains, so re-flush and squeegee those areas. Wash over-spray off glass, aluminum, and highly polished surfaces right away to avoid etching.
Can LIQUI-HARD be used on fresh concrete?
Yes, after final finishing and control joint installation, with a low-pressure, high-volume sprayer such as a Chapin 1949 with a 0.5 GPM nozzle. WR Meadows notes that MED-CURE may be a better choice for freshly placed concrete. Do not dilute the product and keep it from freezing; see the data sheet for concrete temperature limits.
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