SILOXA-TEK 8500: PENETRATING WATER & SALT REPELLENT Versatile, invisible, enduring—the criterion of penetrating concrete sealer. Use with the Lithi-Tek 4500 densifying primer for increased performance and longevity. WITHSTANDS THE HARSHEST ELEMENTS Prevent deicing salt, chloride and freeze-thaw damage with our most recommended sealer. Hydrophobic concrete resists rain, moisture, and organic growth — preventing cracking. Our proprietary silane/siloxane blend offers longer service life and better performance in a safe water-based formula. PREVENT CRACKING, PITTING & SPALLING Easily applied with a low-pressure sprayer, roller, or brush on a variety of concrete, brick and masonry applications. Use indoors and outdoors on new and old concrete. Approved by the DOT for use on highways and bridges, approved by our customers for use on driveways, patios and basements. DRIES INVISIBLE Imbue your concrete with the power of water and salt repellency while preserving its original appearance. Available ready to use or concentrated (5x). Use stand-alone or as a top-coat with a densifiying primer for increased performance and abrasion resistance. *Not recommended for colored concrete. At a Glance Natural Finish Leaves a clear, natural, invisible finish. (Slight enhancement may occur depending on substrate) 2 Coats Wet-on-Wet Applied in two wet-on-wet coats with a sprayer, roller or brush. Ultra Concentrate Supplied concentrated. Mix 1 gallon Siloxa-Tek 8500 Ultra- Concentrate with 4 gallons of distilled or deionized water. Coverage Covers up to 250 square feet per gallon per coat. Two coats recommended. Product Details: Excellent waterproofing - Penetrates deep within the concrete chemically reacting within the pores and capillaries creating a long-lasting hydrophobic surface that beads water100% breathable - Non-film forming. Allows moisture within the concrete to escape without adverse effects to the sealer. Does not trap moistureProvides ease of maintenanceProtects against chloride ion penetration - Forms an effective chloride screen dramatically reducing chloride ion ingress preventing deicing salt / chloride damageReduces moisture intrusion - Resists wind-driven rain, prevents freeze-thaw damage, spalling, pitting and cracking.Resists organic growth - Resists lichen, and efflorescenceDepartment of Transportation approved - Meets and exceeds DOT specificationsImproves durability - Prevents capillary uptake of water and the aggressive substances dissolved in itResists freeze thaw and thermal cycling damageNatural flat finish - Does not change surface appearance, UV stable will not breakdown with light exposureCan be applied to cured, honed and polished concrete - Ideal for horizontal surfaces exposed to pedestrian and vehicle traffic, compatible with silicate densifiersWater based - Low VOC’s Surface Preparation: New “green” concrete must be properly cured. Concrete should obtain 80% of design strength, typically achieved within 14-28 days. The concrete substrate must be structurally sound and clean of oil, grease, dirt, wax, curing compounds, efflorescence, paints, previous sealers, adhesives and other contaminants that might interfere with the penetration of the sealer. Power wash, acid etch or mechanically scarify as necessary to achieve the desired surface condition. Allow for proper dry time before application. May be applied to slightly damp surfaces, although maximum penetration is achieved on dry substrates. The surface-zone moisture content of the concrete should not exceed 4% wt. Do not apply if standing water is visible. Surface and air temperatures must be at least 40°F during application. Surface and air temperatures should not exceed 95°F. Do not apply when temperatures are expected to fall below 32°F within 8 hours or when rain is expected within 12 hours following application. Keep material from freezing. If freezing conditions exist before application, let the substrate thaw before application. Do not apply during inclement weather or when inclement weather is expected within 12 hours. Crack, patching and expansion joint sealants can be applied before or after application; always test for compatibility and adhesion. Protect people, property, vehicles, window glass, roofing materials, plastic products, shrubbery, landscaping and all surfaces not set for treatment from overspray. Application - Ultra Concentrate: Always test a small area before application to ensure desired performance, aesthetics, coverage rates and to verify application technique. Let test area dry thoroughly, 5-7 days, before inspection. Always mix the concentrate with 4 parts water prior to application. Distilled water is recommended for maximum performance. Stir material throughly before and during application. Two wet-on-wet coats are needed to ensure complete coverage. Apply with a roller, brush or low-pressure non-atomizing sprayer. Apply to saturation and let the first coat penetrate for 5-10 minutes then reapply a second coat in the same saturating manner. Less material will be needed for the second coat. Roll or broom out any puddles until the sealer penetrates the substrate. If it starts to rain, stop treatment and cover the impregnated areas. Dry Time: Typical drying time is 4-6 hours at 70°F and 50% relative humidity. Cooler temperatures or higher relative humidity can extend the drying time. Treated surfaces will be ready for pedestrian and vehicle traffic within 24 hours. Water repellency will continue to develop within 7 days of application. Clean Up: Clean equipment, tools and surfaces with hot soapy water. Unused or old material may be disposed of in a waste disposal site in accordance with local, state and federal laws. Precautions/Safety: Avoid contact with skin, eyes and clothing, do not take internally. Use appropriate safety equipment during application and handling. Please refer to the safety data sheet (SDS) for additional precautionary instructions before use. Best Performance: Proper application is the responsibility of the user. Will not inhibit water penetration through unsound or cracked surfaces with defective flashing, caulking or structural waterproofing. Spills should not be allowed to sit for extended periods of time, clean all spills in a timely manner. Make sure the most current versions of product data sheets and safety data sheets are being used. Coverage: 1 coat: 150 - 400 square feet per gallon. 2 coats: 75 - 200 square feet per gallon. Variations in texture and porosity of substrate will affect the coverage and performance of the product.
