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DESCRIPTION
FLOOR-TOP STG is a standard traffic-grade,
single-component,
shrinkage-compensated, self-leveling floor topping
and underlayment that may be pumped or poured. FLOOR-TOP
STG is specially designed to smooth out uneven, rough or
deteriorated interior concrete floors.
USES
This product is ideal for smoothing out and leveling concrete
and rigid-based interior substrates prior to the application of a
flooring system or coating. FLOOR-TOP STG cures to a hard,
traffic-wearing surface suitable for foot and light rubber-wheeled
traffic. FLOOR-TOP STG may be color enhanced
with integral color, dyes, coatings, sealers, or acid stains.
| FEATURES/BENEFITS |
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PACKAGING AND YIELD
50 lb. (22.7 Kg) bag yields 0.50 ft.³ (0.014 m³)
Yields listed above will vary based on substrate
profile, aggregate, variations in mix water amounts
and waste. Field trials should be performed to
determine yields based on actual jobsite conditions.
Color: Light Gray.
FLOOR-TOP PRIMER is available in one-gal.
(3.78 L) units (four per case) or five-gal. (18.9 L)
plastic pails with pour spout. FLOOR-TOP
PRIMER yields 200-400 ft.² /gal. (5-10 m²/L)
depending on porosity of substrate.
SHELF LIFE (TYPICAL)
Twelve months when stored on pallets in a dry,
cool area.
TECHNICAL DATA
The following physical properties were determined
using
the water-to-powder ratio of 5.5 qt. (5.19 L) per 50 lb. (22.7 kg) bag at 72º F (23.5º C).
| Set Time Per ASTM C 191 | |
| Initial Final Working Time Heal Time |
60 minutes 90 minutes 30 minutes 20 minutes |
| Compressive Strength Per ASTM C 109 | |
| @ 1 day @ 7 days @ 28 days |
2300 psi (15.8 MPa) 3000 psi (20.7 MPa) 5500 psi (37.9 MPa) |
| Flexural Strength Per ASTM 348 | |
| @ 1 day @ 28 days |
500 psi (3.45 MPa) 1000 psi (6.9 MPa) |
| Drying Time | |
| Time to light foot
traffic Time to application of flooring system Application thickness |
4 hours 18-24 hours 1” in single application |
| 3/8” minumum when left unprotected to foot and light rubber-wheeled traffic. ¼” minimum for coated. 1/8” minimum for floor coverings. |
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All technical data is typical information, but may vary due to testing methods, conditions, and procedures. Seasonable variations can be expected. Designed for residential, commercial, retail and office applications. Suitable for foot and light duty rubber-wheeled traffic. Not suitable for steel-wheeled traffic or industrial forklift applications. |
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| LEED INFORMATION May help contribute to LEED credits: |
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FOR BEST PERFORMANCE
Reference application guide prior to use. FLOOR-TOP STG shall not
be used as a repair mortar. May be used over rigid wood flooring
systems. Do not apply below 40° F (4° C) or above 95° F (35° C).
Protect from freezing. Designed for interior applications. Do not use
in exterior applications. Do not allow excessive water loss due to heat,
sun or wind. Do not bridge moving cracks. Extend existing control
and expansion joints through FLOOR-TOP STG. Floors must be
completely dry and have a water vapor transmission rate <3 lb./1000
ft.² (1.36 kg/92.9 m²) per 24 hours using a calcium chloride test
(ASTM F 1869). Do not add any admixtures. Do not featheredge.
Exceeding liquid requirements shall result in reduced physical
properties. Realize that set time, working time and heal time will
decrease as the product, air, substrate and mixing liquid temperature
increases and will be increased as the temperature decreases. Flooring
adhesives compatible with concrete may be used with FLOOR-TOP
STG. Sealing FLOOR-TOP STG will increase traffic-wearing service
life. FLOOR-TOP STG which has been color enhanced should be
sealed with a 100% all acrylic sealer designed for architectural
concrete, such as DECRA-SEAL® W/B, after final set. Failure to
follow industry standard practices may result in decreased material
performance. Proper application is the responsibility of the user. Field
visits by W. R. MEADOWS personnel are for the purpose of making
technical recommendations only, and are not to supervise or provide
quality control on the jobsite.
SUBFLOOR PREPARATION
Repair subfloor with MEADOW-CRETE® repair products 24
hours prior to application of FLOOR-TOP STG. Fill all non-moving,
dry cracks with REZI-WELD™ LV immediately
prior to application of FLOOR-TOP STG.
Perform surface preparation in accordance with standard ACI recommendations. W. R. MEADOWS recommends light mechanical abrading of the existing substrate to remove all unsound concrete. This process can proceed through shot blasting, high pressure water-jetting (2500 psi minimum pressure), or other suitable mechanical abrasion means to achieve removal of all contaminates, coatings and adhesives. Do not acid etch or power sand substrate. Substrate must be structurally sound, rigid and free of any contaminants that will adversely affect bond. Prepared surface must be dust-free. Concrete floors should have fully achieved designed compressive strength.
Determine the moisture content and water vapor transmission rate of the subfloor prior to application of FLOOR-TOP STG. The moisture content or water vapor transmission rate shall be determined to be acceptable for standard flooring systems and coatings prior to application of FLOOR-TOP STG.
PRIMING
Shake or mix primer prior to use. Dilute the high solids FLOOR-TOP
STG PRIMER by 1 to 1 by volume with cool, potable
water. One gallon of undiluted primer will yield two gallons of
usable primer. Apply FLOOR-TOP STG PRIMER at a rate of
200 ft.²/gal. (5 m²/L) using a roller or garden-type sprayer. Two
applications of the diluted primer may be needed depending on substrate porosity. If two coats are required, allow the first coat
of diluted primer to completely dry prior to application of
second coat. Also, allow diluted primer to completely dry prior
to application of FLOOR-TOP STG. The dry time will vary
with temperature and humidity, but is typically 1-3 hours. Do
not puddle or pool the diluted primer.
The diluted primer must be used within 72 hours after dilution; any remaining diluted primer must be discarded in accordance with local, state, and federal regulations. The diluted primer should be mixed prior to use.
MIXING
Mix only complete bags. Mix 5.5-6.25 qt. of potable water per 50 lb.
bag of FLOOR-TOP STG powder. Add required amount of water
to the mixing vessel. Then slowly add FLOOR-TOP STG while
mixing with a combination low speed, heavy-duty drill (minimum
650 rpm) and Jiffy (PS-2 type) paddle or eggbeater mixer. Mix for
2-3 minutes or until homogenous and lump-free. Do not over mix.
Overmixing or moving the mixer up and down during mixing
process will cause air entrapment, which will shorten the pot life and
heal time and result in pinholes during the application and curing
process.
FLOOR-TOP STG may be mixed through a continuous rotor-stator type mixer and pump combination for larger areas. To achieve a more efficient application. W. R. MEADOWS, INC. recommends the Machine Technologies D-25 Continuous Mixer and P-25 Mortar Pump for continuous pumping applications.
PLACEMENT
Ensure all doors and windows are closed to prevent drafts. Protect
areas from direct sunlight. Make sure concrete substrate and ambient
room temperature are at least 40° F (4° C) and below 95° F
(35° C) before application. For temperatures above 85° F (29° C),
follow ACI hot weather application guidelines.
Pour or pump properly mixed FLOOR-TOP STG onto properly prepared and primed surface in a ribbon pattern. Maintain a wet edge at all times. If a wet edge cannot be maintained, reduce the width of the pour.
Immediately after placement, spread the material with a gauge rake set to desired depth. After achieving the desired depth, smooth with a smoothing tool, such as a Majic Trowel from TexMaster Tools.
PRECAUTIONS
Avoid inhalation of dust. Avoid direct contact with this
product. Utilize gloves and safety glasses to minimize
direct contact. If contact occurs, wash affected areas with
mild soap and water. Keep product out of reach of children. For industrial use only.
Refer to Material Safety
Data Sheet for complete health and safety information.
This material last updated November 2008.
