Div. 03300

LIQUI-HARD

Specification

NO. 378

LIQUI-HARD®;

CONCRETE DENSIFIER AND CHEMICAL HARDENER

Description
SEALTIGHT LIQUI-HARD Concrete Densifier and Chemical Hardener Compound is a ready-to-use, colorless liquid, consisting of active chemicals that deeply penetrate the surface of concrete. LIQUI-HARD is specifically designed to produce hardened, dust-proofed and improved chemically resistant surfaces wherever it is applied. Through a chemical reaction process, LIQUI-HARD penetrates progressively through the concrete and chemically solidifies all the component parts into a homogenous concrete mass. Besides its densifying and hardening action, LIQUI-HARD solidifies the concrete eliminating dusting, rotting and pitting.

LIQUI-HARD meets maximum VOC content limits of 400 g/L for Concrete Protective Coatings as required by the U.S. EPAArchitectural Coatings Rule.

Uses
LIQUI-HARD is recommended for use wherever hardening, dustproofing and improved chemically resistant surfaces are required. Ideal applications include floors in industrial plants and warehouses, storage silos, sewage plants, chemical processing facilities, refineries and heavy pedestrian floor traffic areas such as civic centers, sports arenas, stadiums, hospitals, airports and museums. It also provides an excellent protective treatment for preventing oxidation of iron aggregate floors.

Features and Benefits

• Penetrates deeply into concrete to densify and harden surfaces to prevent entry of moisture and other foreign matter
• Dustproofs and improves chemical, petroleum and abrasion resistance of treated surfaces
• Prevents oxidation of iron aggregate floors
• Protects against scratching or peeling
• Provides tough protected surface that won’t after-yellow, discolor or show pedestrian or vehicular traffic wear marks
• Ready-to-use from container and easy-to-apply
• VOC-compliant...actual VOC content is less than 100 g/L

Coverage

Application Rate	sq. ft./gal.
Broomed:	200-300
Troweled:	300-500
Fresh:	200-300
Old:	150-250

Packaging
5 gallon (18.93 Liter) Pails
55 gallon (208.2 Liter) Drums

Application Tools

Sprayer

Soft Bristle Broom

Mechanical Scrubber

APPLICATION
Surface Preparation...NEW CONCRETE: On newly placed concrete, LIQUI-HARD can be applied, as you would a cure, after final troweling. Clean surfaces of all curing compounds, residue, oil, sealers, waxes, contaminants and laitance before applying.

OLD CONCRETE: Surfaces should be clean and structurally sound. Remove all residue, oil, sealers, waxes, contaminants and laitance. SEALTIGHT ULTRITE Degreaser may be used (Refer to Product Data Sheet
Number 353). Fill and repair all holes, cracks and deteriorated areas that have been removed to sound concrete.

Mixing...For optimum performance, gentle mixing or agitation is recommended.

Application Method (for NEW and OLD concrete surfaces)
Saturate surface with undiluted LIQUI-HARD by sprayer, squeegee or brooming. While keeping surfaces wet with LIQUI-HARD, scrub surface with a bristle broom or mechanical scrubber until material gels (approx. 45
minutes). Spray material lightly with water. Continue to work it into the surface for another 5 to 10 minutes. Flush
surface with water, removing any excess material with mop or squeegee. On porous surfaces, repeat with a
second application as above.

WARNING: Failure to thoroughly wash and remove all excess material from floor surfaces may result in unsightly white stains. Immediately wash off over-spray from glass, aluminum, or highly polished surfaces with water to avoid etching of surfaces.

DRYING TIME...2 to 4 hours. LIQUI-HARD dries very quickly on new, virgin concrete. Drying times may be extended on old concrete due to surface conditions. Restrict foot traffic for at least 4 hours, 12 hours is preferable.

CLEAN-UP...While still wet, equipment may be cleaned quickly and easily with soap and water. Do not allow LIQUI-HARD to dry before flushing excess from surfaces.

Precautions
Use material "as is" in the container. DO NOT DILUTE. Do not apply if the temperature of the concrete is less than 35ºF (2ºC) or above 135ºF (57ºC). KEEP FROM FREEZING.

Health Hazards
LIQUI-HARD is non-combustible (flash point is greater than 210ºF). Direct contact will result in irritation of the skin and eyes. Inhalation of product mist may result in respiratory irritation. Refer to Material Safety Data Sheet for complete health and safety information.

This material last updated October, 2002.

Div. 03300

LIQUI-HARD

Specification

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W. R. MEADOWS, INC. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform with our published specifications in force on the date of acceptance of the order. THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the exclusive remedy for breach of this Warranty, we will replace defective materials, provided, however, that the buyer examine the materials when received and promptly notify us in writing of any defect before the materials are used or incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has shipped the materials, all our Warranty and other duties with respect to the quality of the materials delivered shall conclusively be presumed to have been satisfied, all liability therefore terminates, and no action for breach of any such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event be liable for consequential damages. Unless otherwise agreed to in writing, no warranty is made with respect to materials not manufactured by W. R. MEADOWS, INC. We cannot warranty or in any way guarantee any particular method of use or application of the performance of materials under any particular condition. Neither this Warranty nor our liability may be extended or amended by our salesmen, distributors or representatives, or by our distributor's representatives, or by any sales information or drawings.