Supporting photo - Iso-Tek 8100

100% Actives Silane

Iso-Tek™ 8100 is a deep penetrating water repellent that protects against water-soluble deleterious materials, and freeze/thaw cycles. Once applied the change of the surface tension creates a surface environment that is hydrophobic forming an effective shield that aides in a dramatic reduction of chloride and water absorption.

Reduces Water & Chloride Absorption

Easily applied with a sprayer, roller or brush, the 8100 can be used on a variety of poured concrete, brick and masonry applications. Can be used on interior and exterior substrates, on new and old concrete and is an excellent choice for nearly any substrate that needs water repellency.

  • Concrete / Brick / Masonry
  • Horizontal / Vertical Reinforced Concrete
  • Bridge Decks / Ramps / Barriers
  • Traffic-Bearing Concrete / Parking Garages
  • Stadiums / Buildings / Plazas
  • Superstructures
Supporting photo - Iso-Tek 8100

Dries Clear

Provides a flat, natural finish. Treated concrete will not change in appearance, color or texture. The proprietary nanotechnology offers deeper penetration when compared to traditional silane isomers resulting in an even longer service life. Provides excellent adhesion when used as a primer for paint or coatings.

Repels Water

Concept image for Repels Water

Resists Salt

Concept image for Resists Salt

Which is Best for You?

  • 8100 Concrete Sealer Bottle Image
    Iso-Tek 8100
    Protects Against
    Water & Salt
    100% Actives
    In Stock
    Current Product
  • 8540 Concrete Sealer Bottle Image
    Iso-Tek 8540
    Protects Against
    Water & Salt
    In Stock

Product Details

  • Surface Preparation

    1. New “green” concrete must be properly cured. Concrete should obtain 80% of design strength, typically achieved within 14-28 days.
    2. 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. Do not apply if standing water is visible.
    3. Surface and air temperatures must be at least 35°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.
    4. Crack, patching and expansion joint sealants can be applied before application; always test for compatibility and adhesion.
    5. Protect people, property, vehicles, window glass, roofing materials, plastic products, shrubbery, landscaping and all surfaces not set for treatment from overspray.


    1. 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.
    2. Stir material throughly before and during application. Do not dilute or alter material for purposes other than specified.
    3. Two wet-on-wet coats are needed to ensure complete coverage. Note: a third coat may be necessary depending upon the application. Verify coverage with a KreteTek product representative prior to application. Apply with a solvent-resistant 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 product 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.

    Clean Up Clean equipment and tools with xylene. 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. For medical emergencies only, call ChemTrec (1-800-424-9300).

    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: 200 - 600 square feet per gallon. 2 coats: 100 - 300 square feet per gallon. Variations in texture and porosity of substrate will affect the coverage and performance of the product.

    • Exceptional waterproofing - Penetrates deep within the concrete chemically reacting within the pores and capillaries creating a long-lasting hydrophobic surface that beads water
    • Dramatic reduction in chloride and water absorption
    • 100% breathable - Non-film forming. Allows moisture within the concrete to escape without adverse effects to the sealer. Does not trap moisture
    • Abrasion resistant
    • Provides ease of maintenance
    • Resists ASR / Alkali attack
    • Protects against chloride ion penetration - Forms an effective chloride screen dramatically reducing chloride ion ingress preventing deicing salt / chloride damage
    • Resist oxidization - Inhibits rust and corrosion of rebar in reinforced concrete
    • Resits moisture intrusion - resists wind-driven rain, prevents freeze-thaw damage, spalling, pitting and cracking.
    • Resists organic growth - Mold, mildew and lichen
    • Meets or exceeds DOT specifications
    • Provides excellent adhesion for paints
    • Improves durability - Prevents capillary uptake of water and the aggressive substances dissolved in it
    • Natural flat finish - Does not change surface appearance, UV stable, will not breakdown with light exposure
    • Can be applied to cured, honed and polished concrete - Ideal for horizontal surfaces exposed to pedestrian and vehicle traffic, compatible with silicate densifiers
    • 100% Neat - Excellent for cold weather applications, low volatility, high resistance to alkalis