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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, Anhydrous Calcium Chloride test to determine the vapor transmission rate (MVER) or in accordance with ASTM F2170 (the in situ probe test), to determine relative humidity (RH) of the concrete slab. Performing both tests is preferable, with the MVER determined immediately before installation in fully enclosed structure and HVAC operating 24x7. The floor area, location of tests, ambient temperature and humidity during test should be recorded and mapped, and at least one test performed for each 1000 sq. feet of floor surface to be treated.
Surface Preparation
While hydrostatic pressure may be mitigated by use of VAPORSEAL-DB, substantial hydrostatic pressure while VAPORSEAL-DB is being applied and cured may lead to excess pinholing.
All surfaces to be treated must be clean, sound, solid and open/absorptive. Testing such as core samples for porosity, reactive aggregates and the presence of penetrating sealers is advised. concrete slab must be at least 4" thick to be considered structurally sound and any separate layer of concrete should be at least 2" thick. Concrete repair and leveling layers may only be considered structurally sound if they are hydraulic cement based, absorptive, profiled and at least 1" in thickness. Repairs containing latex or other components which prevent water absorption must be removed. Surfaces must also be clean and completely free of any dirt, dust, paint, sealer or other contaminant that might interfere with penetration or bond. If duct tape applied to surface and removed pulls up dust, the floor is not sufficiently clean. Do not apply to floors which have applied sealers unless the sealer is completely removed.
Concrete surfaces should be mechanically prepared to achieve a surface profile of ICRI CSP 3-4 (ICRI -International Concrete Repair Institute.) Shotblasting is preferred. Hydrodemolition is acceptable and grinding may be performed with care. Acid etching is never permitted. Leveling should be done on top of VAPORSEAL-DB with suitable repair materials such as SKIMFLOW ES or SKIMCRETE XL.
NOTE: After mechanical preparation, test for absorptive surface and absence of sealers, place dime-sized drops of water at severa! places on floor. Water should penetrate concrete within about 30 seconds. If water beads, surface is not ready to receive VAPORSEAL-DB .
A final cleaning with a pressure washer would be advised where appropriate. Damp mopping is also acceptable. In all cases, a thorough vacuuming (using a dist 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-DB and helps prevent pin holing.
Joints
Expansion (cold or construction) joints should be left intact. VAPORSEAL-DB 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-DB. Once allowed to dry, an expansion joint cover or an elastomeric sealant may be used.
For concrete slabs over 6 months old, saw cut (control) joints and cracks should be filled by pouring VAPORSEAL-DB full depth or to 3/4ths of joint depth. If filling to 3/4 depth pour silica quartz into VAPORSEAL-DB to create a mortar. Sweep away excess sand and proceed with VAPORSEAL-DB 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-DB.
Part A and Part B are supplied in the appropriate mix ratio (100:50 by weight). 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 of 70-110 sf/gallon must be maintained. Very rough or porous concrete may require heavier application rate. Adjust the procedure to achieve the recommended coverage rate. Recommended coverage rates are the maximum rates of coverage allowed.
Pour a strip of DEPENDABLE VAPORSEAL-DB across the surface. Move with a squeegee or broom in a uniform thickness Carefully scrub the material into the surface with a stiff bristle broom/brush. Scrub the entire area at least twice in different directions each time. Back roll to achieve a uniform coverage and smoother surface.
CURING
Before covering VAPORSEAL-DB, be sure to check relative humidity and dew point. Proceed only when in safe area.
VAPORSEAL-DB is a temperature sensitive material. With warmer temperatures working time, cover and cure time is reduced. Cooler temperatures will extend working time, cover and cure time.
TRAFFIC
VAPORSEAL-DB may be exposed to foot traffic once it has completely hardened. If the product becomes wet, it may become slippery. When exposed to traffic, thoroughly clean with soap and water and allow to dry before proceeding.
COVERING
Many floor covering systems require a smooth, level substrate. Please also note that latex based adhesives require a minimum 1/8" thick cementitious layer to absorb moisture from the adhesive.
Most gypsum/cement-based underlayments and toppings, epoxy coatings/terrazzo and floor covering must be applied within the appropriate hours recoat time. First, thoroughly check the coating for any fish eyes or pinholes, which would be a weak point in the membrane. Grind these areas and clean off residue. Make sure the surface is dry and re-coat.
Underlayment Toppings
Treat the substrate as non-porous, using the appropriate primer for self-leveling products such as for DEPENDABLE SKIMFLOW ES, coat with PRIMER SL, and follow the product instructions. Trowel applied patching materials like SKIMCRETE XL may be applied directly to the coating.
Floor Covering
Floor covering adhesives that are applied directly to the membrane should follow instructions for bonding to a nonporous substrate. The adhesive will require a longer tack time. Follow the product information for installation 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 a slab while experiencing hydrostatic pressure
- MVER may fluctuate within slab areas and can have significant seasonal variations.
- Do not apply over existing coatings, sealers 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-DB will receive unprotected exposure to sunlight or UV radiation.
- Can NOT be sprayed
- DO NOT FREEZE
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LIMITED WARRANTY
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| DEPENDABLE guarantees that VAPORSEAL-DB 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-DB 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. |
| 10-YEAR LIMITED WARRANTY |
Dependable offers a limited 10 year warranty.
Contact Dependable for details. |
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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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