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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 F1869-98, Anhydrous Calcium Chloride test to determine the vapor transmission rate in lbs./24 hours/1000 sq. ft. (grams/hr/m2). Minimum of one test for each 1000 sq. ft. of application area. Map the location of tests and results.
For concrete slabs with emission rates over 20 lbs. MVER, a sample application to verify the degree of reduction of vapor transmission is strongly recommended.
Surface Preparation
Standard Floor Surfaces:
All surfaces to be treated must be sound, solid and open/absorptive. For concrete slabs with compressive strength less than 3500 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. Concrete repairs and leveling layers may be considered structurally sound if they are hydraulic cement based, absorptive, profiled and impervious to water. Repairs containing re-emulsifiable latexes or other binders not impervious to water must be removed. Surfaces must also be clean and free of any dirt, paint, sealer or any other contaminant that might interfere with the product's penetration and bond. Do not apply to floors which have applied sealers unless sealers are completely removed.
Concrete surfaces should be mechanically prepared to achieve a surface profile of ICRI CSP 2-3. (ICRI - International Concrete Repair Institute). Shotblasting or hydrodemolition are preferred methods. However, the method may vary depending upon the job circumstances. Acid etching is never permitted. Floor irregularities should normally be leveled over VAPORSEAL-SB containing broadcast sand with suitable repair materials such as SKIMFLOW ES or SKIMCRETE XL.
NOTE: To test for absorptive surface and absence of sealers, place dime-sized drops of water at several places on floor. Water should penetrate concrete within about 30 seconds. If water beads, surface is not ready to receive VAPORSEAL-SB.
A final cleaning with a pressure washer would be advised where appropriate. In all cases, a thorough vacuuming (using a dust containing filter) is needed prior to application.
Finally, saturate the surface with water. The surface must be thoroughly dampened with no standing water. A damp surface allows proper penetration of the VAPORSEAL-SB.
Joints
Expansion (cold or construction) joints should be left intact. VAPORSEAL-SB is not warranted against structural movement at expansion joints. To help reduce moisture emissions through expansion joints, coat the walls and bottom of the cleaned joint with VAPORSEAL-SB. Once allowed to dry, an expansion joint cover or an elastomeric sealant may be used.
For concrete slabs over 6 months old, sawcut (control) joints and cracks should be filled by pouring VAPORSEAL-SB to 3/4ths of joint depth. Pour silica quartz into VAPORSEAL-SB to create a mortar. Sweep away excess sand and proceed with overall VAPORSEAL-SB installation.
Oil Contaminated Floor Slabs:
Follow all surface preparation instructions as detailed above. Treat the surface with a degreasing cleaning agent by the detergent scrubbing method as detailed in ICRI Guideline 03732. Clean the treated surface with high pressure water blasting at 2500 psi. Prior to coating, the surface must be damp, without any standing water. Do not allow the surface to dry before coating application. Surface drying may allow oil to rise and prevent proper bond with DEPENDABLE VAPORSEAL-SB.
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MIXING
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Use chemical resistant gloves and goggles when mixing or applying VAPORSEAL-SB.
Part A and Part B are supplied in the appropriate mix ratio (100:12). Pierce the hole in the top container of Part B and allow the Part B hardener to drain completely into Part A. Mix thoroughly. Mixing is accomplished mechanically with an appropriate mix paddle. Mix for 4-5 minutes at about 300 rpm to produce a streak free, homogenous product. Care must be taken to mix all the product and avoid any action that might entrap air. DO NOT THIN the product.
Once mixed, pour the material into a separate clean, 5 gal. container to assure complete mixture. Once transferred, re-mix the unit to be certain of consistency. |
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APPLICATION
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Application Conditions: Slab (surface) and air temperature must be 55oF or greater. Product must be kept between 60o and 75oF at time of mixing.
Tools needed: soft-edge squeegee, short nap synthetic roller, high quality stiff bristle masonry brush or broom.
To ensure proper coverage rate, measure off the area to be covered. 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. Follow the coverage rate from appropriate emission rate (see chart). Millage thickness may vary with porosity but overall coverage fo 75-115 sf/gallon should generally be maintained. Very rough or porous concrete may require heavier application rate. Adjust the procedure to achieve the recommended coverage rate.
Pour a strip of DEPENDABLE VAPORSEAL-SB across the still moist floor surface. Move with a squeegee or broom in a uniform thickness. Carefully scrub the material into the surface with the long handled brush. Scrub the entire area at least twice in different directions each time. Back roll to achieve a uniform coverage and smoother surface.
CURING, COVERING
Broadcasting Sand before curing, covering:
Generally, water-borne adhesives should not be used directly over VAPORSEAL-SB without DEPENDABLE approval. Many floor covering materials also require a more level or smooth surface. An application of SKIMFLOW ES or another approved DEPENDABLE Self-Leveling product is recommended to provide a proper substrate for the floor covering and the adhesive.
VAPORSEAL-SB receiving a subsequent covering, such as coating, topping or underlayment, shall have sand - broadcast, not thrown, so as not to disturb the coating - into the fresh VAPORSEAL-SB. Clean, fresh water washed and dried #20 silica sand shall be added to refusal at the rate of 30 to 40 lbs. per 100 sq. ft. (15-18 kg/m2) (Weigh out the dried sand for coverage area needed to be covered). To cover VAPORSEAL-SB with a coating, without broadcast sand, VAPORSEAL-SB must be mechanically roughened and area must be wiped clean with MEK.
Allow 12-24 hours for VAPORSEAL-SB initial cure before covering. Remove all loose sand and proceed with the topcoat. Floor covering installation proceeds once the self-leveling material has sufficiently dried (see product data sheet for drying times). |
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CLEAN UP
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| Immediately clean all equipment and tools with denatured alcohol. If allowed to dry, clean with MEK. |
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LIMITATIONS
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• Do not apply over existing coatings or floor coverings.
• Do not apply where either slab or air temperature falls below 50°F (10°C) at or within 72 hours after installation.
• Do not apply to concrete slabs with less than 3500 psi compressive strength. (Consult DEPENDABLE Technical Services)
• Protect the area to be treated from strong sunlight, wind or drafts.
• Acid Etching should not be used as a method of preparation.
• Do not apply to new concrete slabs until at least 7 days old.
• Do not apply where VAPORSEAL-SB will receive unprotected exposure to sunlight or UV radiation.
•Can NOT be sprayed
•Protect from UV light |
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LIMITED WARRANTY
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| DEPENDABLE guarantees that VAPORSEAL-SB is free of manufacturing defects and will reduce the moisture emission rate of a concrete slab when applied strictly in accordance with DEPENDABLE's instructions and current technical bulletins. The limited warranty extends for the same term and to the same extent or proration as the floor covering placed over it immediately after installation, and is limited to the repair or replacement of the DEPENDABLE products used in the installation and the floor covering initially installed, or to the cost of DEPENDABLE's products and the floor covering initially installed if VAPORSEAL-SB is not repaired or DEPENDABLE's products are not used in the replacement. The limited warranty does not cover products not manufactured by DEPENDABLE other than the floor covering. 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. No salesman, agent, distributor or dealer has authority to expand, alter or waive these provisions. |
| SPECIAL WARRANTY |
Dependable offers a limited 10 year warranty.
Contact company for details. |
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