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PREPARATION AND APPLICATION
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EMISSION TESTING
All areas to be treated must be tested [in accordance with ASTM F1869-04 (Calcium Chloride test) or ASTM F-2170-04 (in situ probe test). All areas must also be tested for alkalinity. Map the location of all tests and results. Record temperature and humidity conditions. For concrete slabs with hydrostatic pressure (liquid water transmission) emission levels greater than 15 lbs. MVER, or relative humidity greater than 90% RH, use DEPENDABLE VAPORSEAL products. Under slab moisture without an effective under slab barrier can vary and testing only measures current condition. Where an effective under slab barrier is not present, use of VAPORSEAL products should be considered.
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SURFACE PREPARATION
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Standard Concrete Surfaces:
When using CUTDOWN II as a moisture retarder, penetration of the slab surface is necessary for maximum bond and effectiveness. CUTDOWN II should usually have intimate contact with concrete slab. Concrete repairs underneath CUTDOWN II must be well bonded hydraulic cement materials with only non-reemulsifiable latex additives or other binders impervious to water. All others must be removed and leveling done above CUTDOWN II. All surfaces to be treated must be sound, solid, clean, absorptive, and dry. Surface shall be free of sealers, dirt, dust, paint, adhesive residues or other contaminants that might interfere with the product’s penetration and bond. Concrete sealers or other bond breakers must be removed prior to installing CUTDOWN II. Soft, dusty or weak layers of concrete should be removed. One way to test surface is by pressing a piece of duct tape onto the concrete. Remove and inspect the back. The surface may be considered clean if the tape is clean. Cleaning usually requires damp mopping. Make sure there is no standing water remaining on surface.
Open, absorptive concrete permits the best bond and long term performance for CUTDOWN II. Polished, power trowelled or very smooth slabs shall be ground, scarified, or bead blasted to allow CUTDOWN II to soak into pores and bond to slab. Installation on a smooth slab without profile requires test application and bond testing. Alkalinity in concrete greater than pH of 10.0 should be reduced prior to installation. For concrete slabs with compressive strengths less than 3000 psi, contact Technical Services. Concrete slabs may be tested with a Swiss hammer test or by core samples to determine minimum required compressive strength of concrete. Concrete must be at least 4'' thick to be considered structurally sound, and any separate layer of concrete must be at least 2'' thick. CUTDOWN II may leave an “orange peel” finish that may require leveling with some floors.
Joints In Slab:
Expansion (through slab) joints should be left intact. CUTDOWN II is not warranted against structural movement or moisture at expansion or “cold” joints. Joint walls may be painted and joint filled with a material designed to allow movement to minimize moisture transmission. Dimensionally stable, or non-moving, saw cut control joints, voids and cracks shall be filled by brushing or pouring CUTDOWN II into the crack. Any finish leveling
should be done over the area when CUTDOWN II has dried with an appropriate patch such as SKIMCRETE XL, SKIMCOAT or other DEPENDABLE leveling materials.
Bond and Wood floor coverings:
The bond required of CUTDOWN II will vary slightly depending on the floor covering and adhesive. When preparing a substrate that will receive a finish wood flooring, the substrate must always be shot blast to clean, open absorptive concrete. NOTE: To test for absorptive surface and absence of sealers, place dime-size drops of water on several places on subfloor. Water should penetrate concrete within about 30 seconds. If water beads, surface not ready to receive CUTDOWN II.
Adhesive residues:
CUTDOWN II may be used to isolate well bonded (non soluble) adhesive residues, including Cutback. CUTDOWN II does not bond as strongly to adhesive residue as to adsorptive concrete, but will form an effective membrane. The dark color of cutback adhesive residues will show through even 2 coats of CUTDOWN II, but is not an indication of bleeding through the material. For adhesive residue isolation only, CUTDOWN II can be applied on wood substrates. Wood substrates must be secure, free of movement and underlayment grade. Since it can not penetrate into the concrete, CUTDOWN should not be used for moisture control when covering adhesive residue.
Existing adhesives should be well bonded to substrate. Aggressively scrape surface to remove all possible material and high spots. NOTE: Do not scrape adhesives containing asbestos unless following special asbestos removal procedures. Water soluble adhesives shall be removed. Leveling or patching normally must be completed following CUTDOWN II application. Use the appropriate DEPENDABLE patching or self-leveling product to maintain full warranty
Self Leveling
When installing self leveling products over CUTDOWN II, the method and extent of preparation should be consistent with recommendations of the self-leveling product as well. Use of spiked sandals during installation should be avoided over CUTDOWN II.
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MIXING
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TWO PART MIX AT TIME OF APPLICATION
CUTDOWN II is packaged 4 gallons in a 7 gallon pail for easy mixing. Parts A and B are packaged in separate pails within the 7 gallon pail. Pull both pails out, remove the lids and pour the material into the 7 gallon pail. Use a brush to scrape the material from each pail. Pour Part A into 7 gallon pail first, then add in Part B. Mix mechanically with a mix blade designed to mix low viscosity liquids, such as a Jiffy mixer. Mix thoroughly, at about 300 rpm, for 3 minutes until streak free. Avoid entraining air or mix until observable bubbling does not occur.
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APPLICATION
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COVERAGE/MILS REQUIRED FOR WARRANTY a mil is a thousandth of an inch. Mils may be measured with a wet film gauge (available through Dependable distribution or local professional paint stores). Approximate mils can be achieved by using the required coverage rate. To ensure proper coverage, mark out the area of the floor that a gallon should cover.
MVER
Lbs. |
RH |
WET MILS
Applied |
DRY MILS
Cured |
#/Coats |
Sq.Ft./4 gal. |
| 8 |
85 |
12 |
8 |
2 |
540 |
| 15 |
90 |
18 |
12 |
3 |
360 |
Mark with tape or otherwise measure out the area of floor intended to be covered by the container or containers mixed. Film gauges are also useful to check the thickness of the wet material. Dry mil thickness must be equal to lbs. MVER to be abated for warranty.
TWO COAT APPLICATION (8 lb. MVER and less)
With a coverage rate of 200-350 square feet per gallon, wet film thickness should be about 4 mils per application, which may vary with surface porosity. CUTDOWN II is normally applied with a 3/8'' nap roller. Nap size will depend upon the texture and porosity of the surface. Either dip the roller into the pail or a paint pan or pour one width strip directly onto surface. Roll with even and consistent strokes, keeping all application back and forth in the same direction, to ensure even application. Allow the first coat to dry 2-3 hours before beginning the second application. Apply the second coat in the opposite direction to the first or on a diagonal. Final dry film thickness should be 4 mils or more. Allow 24-48 hours prior to application of floor covering.
THREE COAT APPLICATION (Where MVER may exceed 8 lb.)
Whenever CUTDOWN II is used to mitigate moisture, the coverage and resulting depth of the coating is critical. In order to assure enough mils of membrane, the first coat should be a double wet applied coat and the area intended to be covered by one gallon (160 square feet on the first coat) should be marked off. In the measured area, using a 3/8 or 1/2'' nap roller, roll the product liberally onto the floor from a pan or material poured on the floor across one width. While that application is still wet, roll a second wet application of CUTDOWN II over the initial wet coat. Depending upon the porosity of the substrate, the material may be dry to the touch when re-applying. If applying by pouring on to the substrate, lightly pre-dampen the floor with water. Use a mop or broom to spread the water on the floor. Make sure there is no standing water, making sure that the surface does not glisten, prior to installing CUTDOWN II. Allow to dry 2 hours before applying second or third coats. Apply the second coat across the grain or perpendicular to the first coat. If applying a third coat, it is applied in the same direction as the first coat. Allow a minimum of 24 up to 48 hours cure time without traffic on the floor before patching or covering, depending on temperature and humidity. Full cure is at 48 hours.
FLOORING APPLICATION
Most adhesives (including latex, urethane, epoxy and thin set mortars) may be applied directly to the surface. For coatings and other covering materials, consult Technical Services.
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CLEAN-UP
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Use soap and water to clean tools or spatter while CUTDOWN II is wet. Once the material dries and hardens, abrasive removal is required.
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LIMITATIONS / PRECAUTIONS
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- SHELF LIFECUTDOWN II should be used within 12 months of manufacture and should be stored in cool, shaded areas. Protect from heat, direct sun and freezing. Temperatures above 75°F will shorten shelf life and product should not be used after freezing.
- Not for use over new concrete or where epoxy floor coatings are applied directly over membrane. Consider DEPENDABLE VAPORSEAL products.
- Application area should be conditioned at 70°F with maximum humidity of 60% for 48 hrs. prior to and 72 hrs. after application. Concrete slab temp. must be minimum of 55°F.. Do not apply over existing coatings, sealers or floor coverings.
- Extreme care should be taken with any operations on the CUTDOWN II membrane so as not to damage or de-bond the membrane..
- Cover CUTDOWN II within 48-72 hours.
- Do not use over soft, heavy cutback or other spongy surfaces, as film will crack and isolation will fail.
- Do not nail into or penetrate CUTDOWN II membrane.
- Not recommended where high alkalinity exists. If pH exceeds 11, take measures to reduce it.
- Not an adhesive
- Not a wear layer or topping
- Not warranted to reduce emission levels greater than 15 lbs. MVER or relative humidity in slab exceeding 90% at any time. If subsequent moisture levels may be higher or hydrostatic water (liquid) may occur, use VAPORSEAL products, not CUTDOWN II.
- Not designed to have regular contact with liquid water.
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LIMITED WARRANTY
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Dependable Chemical Co., Inc. warrants and guarantees to the original owner of the installation that DEPENDABLE CUTDOWN II, when used in ac5ordance with the current instructions and technical bulletins, will reduce moisture emission rates (MVER) up to 15 lbs. per 24 hours per 1000 square feet or relative humidity of 90% to a moisture emission rate of less than 3 lbs. or such higher value as required by the manufacturer of the floor covering used in the installation, PROVIDED
• a proper moisture test is performed immediately prior to installation of CUTDOWN II to establish that the moisture level does not exceed the maximum allowable;
• the dry or cured mils applied to the floor are equal to or exceed the maximum moisture level that is required to be mitigated;
• DEPENDABLE is notified of any claim of failure and given proper opportunity to inspect and test for moisture prior to the membrane being disturbed or removed;
• Tests at the time of failure establish that moisture under CUTDOWN II in the slab is less than the maximum permissible, and that moisture transmitted through CUTDOWN II exceeds 3 lbs. MVER or that CUTDOWN II will provide a barrier to transmission of cutback adhesive to a new floor covering where applied to a hard, well bonded adhesive residue. In the event of damage or failure of flooring caused by excessive moisture emissions or due to migration of adhesive residues under this warranty, DEPENDABLE shall provide all labor and material to repair or remove and replace the floorcovering placed over CUTDOWN II (including any costs of removal of old material) with a floor of similar quality for the same period of time and at the same proportion of replacement cost coverage as the manufacturer of the original floor covering material placed over CUTDOWN II offers for the replacement of its product, provided that DEPENDABLE is given proof of application of sufficient CUTDOWN II to provide the recommended coverage rate on the installed floor. This warranty is limited to five (5) years after installation and conditioned upon DEPENDABLE being given notice of such failure within 5 years after the initial installation of CUTDOWN II and within 30 days after the first discovery of the defect attributed to such installation, whichever occurs first.
DEPENDABLE makes no warranty as to merchantability or fitness for a particular use and this limited warranty is in lieu of all other warranties, express or implied, and no salesman, agent, distributor, or dealer has authority to expand, alter or waive these provisions.
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24 HOUR EMERGENCY: CHEMTREC® 1-800-424-9300
NON-TOXIC and NON-FLAMMABLE
Keep container closed and keep away from children. May cause slight eye abrasion or irritation if spilled or rubbed in eyes. Flush thoroughly with water. If taken internally, call a physician.
Technical Assistance: call 1-800-227-3434
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