HFL200 High Flow Leveling

DESCRIPTION 

PrepWorx HFL200 cementitious self-leveling compound for use up to 2" depth application. Excellent flow and working time properties produce level, flat surfaces with good absorbency for most floor coverings and adhesives. 

APPROVED SUBSTRATES

Interior use only for residential and commercial applications  Produces flat, smooth surfaces for installing textile, resilient, ceramic, and engineered wood floor coverings  Suitable over:  Structurally sound concrete  APA Exposure Type 1 plywood, OSB, or equivalent subfloors  Well-bonded hard surface flooring (e.g., terrazzo, ceramic tile, stone, epoxy coatings)  Well-bonded non-water-soluble adhesive residues (including cutback adhesive)  Existing gypsum and Portland-based leveling compound  For use over radiant heat systems  Do not use over chemically abated substrates.

SUBSTRATE TESTING 

• Refer to substrate moisture limits per flooring installation requirements. 

• Moisture testing per ASTM F-2170 In-situ Relative Humidity: Testing must be performed per latest revision. Three tests must be conducted for the first 1000 SF and one additional test per 1000 SF. 

• Moisture Testing per ASTM F-2170 In-situ Relative Humidity: 85%RH  

• Vapor retarder compliant with ASTM E1745 is in place and absent of hydrostatic pressure.  

• If RH exceeds acceptable levels, apply a moisture control system like PrepWorx MCS310 or PrepWorx VBS311. 

SUBSTRATE PREPARATION 

• Substrates must be structurally sound, clean, and surface dry. 

• Substrate must be free of dust, dirt, oil, grease, paint, curing agents, concrete sealers, loosely bonded toppings, loose particles and any other substance or condition that may prevent or reduce adhesion. 

• Any weakly bonded or soft surface material, such as loose patching compounds, leveling compounds, floor coverings, or coatings, must be removed. 

• Do not use sweeping compounds. 

Concrete Substrate: 

• Concrete and cementitious substrates must be fully cured and free of hydrostatic pressure and topical moisture.  

• Clean surfaces using mechanical methods and avoid using acid etching or sanding, which will not provide adequate bonding preparation.   

• Ensure all expansion, isolation joints, and moving cracks are properly treated 

• For dormant cracks wider than 1/32” (0.8 mm), PrepWorx CJR400 may be used to repair. 

• It is recommended to fill dormant cracks and saw cuts deeper that 1”, using PrepWorx MRR111. 

• Ensure all moving joints, including expansion and isolation joints, as well as moving cracks, are properly addressed and accounted for throughout the entire flooring system, including the finish layer. No flooring material should be installed over these areas. 

• If no moisture control system is needed, prime the clean surface with PrepWorx VBC301. 

Wood Substrate: 

• Wood substrates must provide a rigid base and be securely fastened without excessive vertical movement. The surface of the wood must be clean and free of oils, grease, wax, dirt, varnish, shellac, and any contaminates that would impair adhesion. If necessary, sand down to bare wood. Do not apply totalworx products directly to fire-retardant or pressure-treated wood surfaces. 

WARNING:  DO NOT SAND, DRY SWEEP, DRY SCRAPE, DRILL, SAW, BEAD BLAST OR MECHANICALLY CHIP OR PULVERISE EXISTING RESILIENT FLOORING, BACKING, LINING FELT, ASPHALTIC “CUTBACK” ADHESIVES OR OTHER ADHESIVES. These products may contain either asbestos fibers and/or crystalline silica.  Avoid creating dust. Inhalation of such dust is a cancer and respiratory tract hazard. Smoking by individuals exposed to asbestos fibers greatly increases the risk of serious bodily harm. Unless positively certain that the product is a non‐ asbestos‐containing material, you must presume it contains asbestos. Regulations may require that the material be tested to determine asbestos content and may govern the removal and disposal of material.  See current edition of the Resilient Floor Covering Institute (RFCI) publication Recommended Work Practices for Removal of Resilient Floor Coverings for detailed information and instructions on removing all resilient covering structures.  For current information go to www.rfci.com. 

APPLICATION INSTRUCTIONS AND COVERAGE RATES 

Read and follow the product specific installation guidelines for layout, design and any special instructions for installation. 

PrepWorx HFL200 requires the floor surface to be primed with PrepWorx VBC301 primer before application. 

Mixing 

• Optimum product application conditions are 60–77 °F (16–25 °C) and relative humidity between 40-60 %. 

• Pour 4-4.5 quarts (3.75- 4.25 liters) of cold, clean water per 50 lb. bag into a clean container. 

• Slowly pour in the powder and mix vigorously for 1 minute per bag until blended to a viscous, lump free consistency. Use a heavy-duty drill with a Oval mixing paddle (minimum 650 rpm). 

• Do not overwater the mixture, as additional water weakens the material. 

Application 

• Pour the mix onto the primed substrate. Working time is approx. 20-30 minutes. 

• Coverage rate at 1/4" (6 mm) depth is approx. 24 sq. ft. per 50 lb. bag feaured in coverage.

• Distribute product evenly with a suitable gauging tool and smooth or spike roll the wet finish promptly. 

• Product is dry to accept foot traffic after 3–4 hours. 

• Ready for installation of common floor coverings after approx. 24-36 hours. Depth of application, ambient conditions, and surface porosity will affect dry time. 

Curing 

• Drying times may vary based on environmental conditions and the thickness of the application. 

• Foot traffic can begin 3-4 hours after installation. 

• For ceramic, porcelain, or quarry tiles, allow up to 6 hours for curing. 

• Most floor coverings can be installed after 24 hours, depending on thickness and substrate. For applications greater than 3/8” (9 mm), conduct a mat test (ASTM D4263) before installing floor coverings. 

• ​Refer to chart below for further information. 

• Always refer to floor covering guidelines for installation over cement-based patch products. 

• Ensure proper ventilation for sufficient curing. Do not apply fans or other forced air to surface. 

Coverage Rates 

• Coverage rates are approximate values. Actual coverages may vary according to substrate conditions and thickness of the application. 

• Application Depth Approximate Coverage per 50 lb bag 1/4" (6 mm) 24 sq ft (2.23 m2 at 6 mm per 22.7 kg bag) *At 70 °F (21 °C) and 50 % relative humidity. Surface profile and porosity, application depth, temperature, and humidity will affect dry time and coverage. 

PRODUCT CHARACTERISTICS 

 

Weight	50 lbs / bag
Pallet Quantity	42
Pallet Weight	2165
Physical State	Dry Powder
Color	Gray
Shelf Life	Up to 9 months. In original unopened packaging, when stored indoors in dry, moderate conditions between temperatures of 50F - 90F (10C - 32C).
Storage	Store away from direct sunlight in a well-ventilated, cool, dry area. If storing after opening, remove all air from packaging and seal tightly.
Compression Strength (ASTM C1708 | air cure)	4,500 psi at 28 days flexural: 800 psi @ 28 days
Freeze/Thaw	Freeze thaw stable
Cleaning Instructions	While still fresh, wash hands, tools and equipment with warm soapy water.
Traffic / Installtion	Foot Traffic: 3-4 hr*  LVT/LVT/Modular Resilient: 24 hr*  Sheet goods: 36 hr*  Ceramic 6 hr*  Natural Stone, Engineered 60 Hr*

*At  ¼ inch (6mm) depth over porous substrate at 70 °F (21 °C) and 50 % relative humidity. Surface profile and porosity, application depth, temperature, and humidity will affect dry time and coverage. 

Environmental

• California South Coast Air Quality Management District Rule 1168
• California Department of Public Health Section 01350
• SCS Global Advantage Gold - SCS-IAQ-11081

LEED IEQ Credit Information (2009 and V4)

Credit Requirement	Status	Comment
Meets General Emissions Evaluation Criteria	Complies	SCS-IAQ-11081
VOC’s (Rule #1168 of California SCAQMD amended October 6, 2017)	Complies	VOC Content Between 0.5 mg.m3 and 5.0 mg/m3

WARRANTY 

Standard product warranty is 1 year.  When combined with certain PrepWorx moisture management and flooring adhesive products the term of warranty is extended ranging from 10 to 20 years.  See Shaw System Warranty (Warranties) for complete details. PrepWorx Floor Preparation 1 Year Limited Warranty

PRECAUTIONS 

Carefully read and follow all precautions and warnings on the product label. For complete safety information, please refer to the Safety Data Sheet.