Concrete SEALER

Exceptional in every way

55% actives nano technology driven high-performance isooctyltriethoxysilane. Its smaller molecular structure allows for deeper penetration increasing performance



5 Gallon Bucket: $369.88

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Exceptional in every way

55% actives nano technology driven high-performance isooctyltriethoxysilane. Its smaller molecular structure allows for deeper penetration increasing performance.

Additional information

Weight N/A

What it is

55% actives silane sealer

What it's for

Specially formulated for Interior/exterior, horizontal/vertical, reinforced concrete, traffic baring concrete substrates, bridge decks and superstructures, concrete ramps and barriers, parking garages, stadiums and buildings, plazas

What it does

Seals, repels water, resists chlorides and impregnates concrete

What it's made of


VOC Compliance

Provides exceptional water and chloride repellency

What's the finish/color

Clear, natural

How do you apply it?


What's so special about it

55% actives solvent carried silane that is VOC compliant

What else is like it?

Iso-Tek 8100 : 100% actives silane sealer


Photos and videos of Ghostshield concrete sealers in action


Technical specs, application instructions, testing data

ISO-TEK 8540 VOC rises above

Iso-Tek 8540 VOC meets or exceeds the following tests:

ASTM E-96: Water Vapor Transmission

ASTM E-514: Water Penetration

AASHTO T-259: Chloride Ion Penetration

NCHRP 244 II/IV: WVT, Chloride Intrusion

OHD L-34: Depth of Penetration


  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 20°F during application. Surface and air temperatures should not exceed 95°F. Do not apply when temperatures are expected to fall below 20°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 or after 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 thoroughly before and during application. Do not dilute or alter material for purposes other than specified.
  3. Apply with a roller, brush or low-pressure non-atomizing sprayer. Apply to saturation and 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.

Clean Up

Clean equipment and tools with mineral spirits. Unused or old material may be disposed of in a waste disposal site in accordance with local, state and federal laws.


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.
  • Iso-Tek 8540 VOC should not get into direct contact with bitumen.
  • Spills should not be allowed to sit for extended periods of time, clean all spills in a timely manner.
  • Plastic windows will turn opaque when sprayed with this product
  • Make sure the most current versions of product data sheets and safety data sheets are being used.


1 coat: 100 - 400 square feet per gallon. 2 coats: 50 - 200 square feet per gallon. Variations in texture and porosity of substrate will affect the coverage and performance of the product.

Ghostshield in action

Recent project videos showing how to seal your concrete with Ghostshield


Our latest project in Florida was for the beautiful new Caoba Apartments, part of the new Miami Worldcenter. Ghostshield was the perfect sealer for their high-traffic parking garage.

432 Park Avenue New York

432 Park Avenue - the tallest residential building in the Western Hemisphere - sealed with our flagship commercial product, Iso-Tek 8501; a thixotropic sealer.


View the Micro-Degreaser 1100 a non-acid-based, non-toxic cleaner and the Siloxa-Tek 8510 a deep-penetrating oil and salt repellent sealer in action.