Lithi-Tek® 9500 Concrete Sealer

A proprietary densifying and waterproofing hybrid concrete sealer that provides long-lasting protection from moisture and abrasion. Available only in concentrate.

  • Coverage Up to 1000 SF square feet
  • Coats 2
  • VOC Content 0 g/L
  • Finish Natural
  • Concentrated One gallon makes five (5) gallons.
  • Warranty 100 Year Warranty
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An industrial-grade, water-based, proprietary sealer designed to densify, strengthen and waterproof concrete. Lithi-Tek 9500 penetrates pores in the concrete to strengthen it by up to 50% while providing hydrophobicity in a single application. This proprietary blend of chemistries, shipped concentrated, is why we believe it is the concrete industry's most innovative product.


Exceptional when used for:
  • Substrates: Concrete
  • Applications: Basement floors, poured basement walls, driveways, patios & garages not exposed to deicing salts
Not for use on:
  • Bricks, concrete blocks/cinderblocks,
  • Polished concrete/extremely smooth concrete surfaces
  • Not recommended for colored concrete
  • Not intended to be used as a substitution for a concrete vapor barrier or foundation membrane below grade (can be used in conjunction with a concrete membrane).



  • Increases abrasion resistance
  • Strengthens concrete up to 50%
  • Water beading
  • Excellent penetration
  • No change in appearance
  • Low VOCs


  • Mold/Mildew growth
  • Efflorescence
  • Water absorption


  • Hydrostatic pressure
  • Water vapor transmission
  • Moisture intrusion
  • ASR/Alkali
  • UV radiation

Lithi-Tek 9500 Rises Above

Lithi-Tek 9500 meets or exceeds the following tests:

  • ASTM E-96: Water Vapor Transmission
  • ASTM C-1353: Abrasion Resistance
  • ASTM C-779: Abrasion Resistance
  • ASTM C-642: Density, Absorption, and Voids
  • ASTM E-303: Surface Frictional Properties
  • OHD L-34: Depth of Penetration

Depth of Penetration Percentage Improvement vs. Control

Lithi-Tek® 9500
Sealer Product

Auxilliary Information

  • Technical Specs

    • Feature: Waterproofer/densifier
    • Chemistry: Proprietary hybrid technology
    • Color: Clear
    • Finish: Invisible
    • Category: Penetrating
    • Carrier: Water
    • Availability: Ultra concentrate: makes 5 gallons
    • Packaging: 1 gallon concentrate
    • Coverage: Up to 1000 sq. ft. per coat
    • Reconstitution Ratio: 1 part sealer : 4 parts water
    • Interior/Exterior: Interior/exterior
    • Application Method: Sprayer, roller
    • Application Temperature: 45 F - 90 F
    • Number of Coats: 2
    • Time Between Coats: 5 minutes
    • Drying Time (dry to touch): 6 hours
    • Drying time (full cure): 24 hours
    • Time before/after rain: 48 hours
    • New Concrete: Yes
    • Storage/Shelf Life: 1 year
    • Clean up: Soap/water
    • Paintable: Yes, oil or enamel based paint; first test for compatibility
    • VOC Content: 0 g/L
  • Description

    Lithi-Tek® 9500 is an advanced, high performance, industrial strength, penetrating concrete waterproofing sealer solution designed to reduce water and moisture intrusion. This unique formula incorporates leading molecular nanotechnology, putting an end to water and moisture migration through any porous concrete substrate. Lithi-Tek® 9500 is a uniquely transparent, blended formula with added enzymes and surfactants that aide in accelerating a deeper penetrating disbursement. Thus eliciting a more effective, uniformed chemical reaction between the formula and the concrete substrate it’s being applied to. Lithi-Tek® 9500 provides a hydrophobic barrier beneath the surface and seals out moisture while remaining highly vapor permeable and chemically bonding with the substrate. The treated surfaces will show no change in visual appearance from application and the surface that will not chip, flake, delaminate or breakdown with UV light exposure.

    • Available in an industry first ultra-concentrate, 1 gallon of Lithi-Tek 9500 mixes with 4 gallons of water to make 5 gallons of sealer that will treat up to 1000 sq. ft. of concrete per coat.
  • How it Works

    A hybrid densifying, impregnating sealer is typically used to densify, harden and prevent water and water-soluble damaging substances from penetrating concrete and mineral substrates. Once impregnated the reaction process from the active silicate ingredient produces additional C-S-H (calcium silicate hydroxide) within the capillary tracts thus increasing the density and volumetric mass. The change of the surface tension elicited from the waterproofing component forms a repellent cross-linking membrane that is hydrophobic and able to repel water and water-soluble deleterious materials.

    In structures on and below grade water should generally be kept out and away to prevent damage. Lithi-Tek® 9500 can block up to 99% of surface moisture. The chemical reactive and active ingredients seal the pores within the substrate adequately blocking surface moisture while still maintaining the concretes ability to breathe. It will not significantly modify substrate appearance or traction and will only wear away if the concrete surface itself wears away.

    New or existing concrete can be treated and performance can be improved in as little as two applications. Lithi-Tek® 9500 is a small investment that leads to long-term savings and improved performance for decades.

  • Preparation

    Avoid contact with skin, eyes and clothing. Wash hands after use and do not take internally. Please refer to the product Safety Data Sheet (SDS) before using. The preparation process should be followed to ensure adequate penetration and optimum performance:

    Step 1: The concrete substrate must be structurally sound, thoroughly dry and clean. Wait at least 24-48 hours after rain and/or pressure washing before sealing; concrete should be visibly dry.

    Step 2: Remove all paints, previous sealers and/or adhesives before application.

    Step 3: The substrate must be clean of oil, grease, dirt, wax, curing compounds, efflorescence and other contaminants that might interfere with the penetration of the sealer.

    Step 4: If acid is used to clean the concrete, neutralize the surface completely and rinse it with water prior to application. Then wait for the concrete to dry out for at least 24-48 hours.

    Step 5: The surface-zone moisture content of the concrete should not exceed 4%wt.

    Step 6: Cover all surrounding areas not intended to be coated.

  • Application

    Step 1: Lithi-Tek® 9500 is a concentrated product that needs to be mixed with water prior to application. We recommend using a five (5) gallon bucket to mix the sealer. Pour the one (1) gallon container of Lithi-Tek® 9500 into a five (5) gallon bucket.

    Step 2: Next fill up the bucket with four (4) gallons of water (distilled water is preferred*). (Lithi-Tek® 9500 can be mixed in smaller quantities as long as the one (1) part Lithi-Tek® 9500 to four (4) parts water ratio is followed. For example, one (1) cup Lithi-Tek® 9500 can be mixed with four (4) cups of water, or a half (1/2) gallon of Lithi-Tek® 9500 can be mixed with two (2) gallons of water).

    *Distilled water is highly recommended for reconstitution since minerals in tap water can have adverse reactions or cause discolorations in treated concrete. Tap water can be used if first tested for compatibility.

    Step 3: Stir the Lithi-Tek® 9500 and water mixture well before using.

    Step 4: If spray applying, pour the mixed material into a sprayer. If roll applying, dip a 3/8" nap roller into the bucket of mixed material.

    Step 5: Spray or roll one coat onto an area of approximately 100 square feet.

    Step 6: Immediately apply a second coat to the same 100 square foot area, while the first coat is still wet. You may walk on the first coat to apply the second coat. Apply until the surface is saturated but not to the point of puddling. (Since the Lithi-Tek® 9500 is a hydrophobic product if you try to apply a second coat after the first coat has dried, the first coat may try to repel the second coat).

    Step 7: Roll or broom out any puddles until the sealer penetrates the substrate.

    Step 8: After the first area has been treated move on to the next 100 square foot section and apply two (2) coats following the wet-on-wet application method.

    Step 9: When the entire application has been treated with two (2) coats, let the concrete dry for at least six (6) hours before walking, 24 hours before driving, and protect the concrete from rain for at least 24-48 hours after sealing.

    Step 10: Clean up: Application tools can be cleaned using soap and water.

    Step 11: If over-spray occurs it should be cleaned and removed immediately after sealing.

    Step 12: Unused or old material may be disposed of in a waste disposal site in accordance with local, state and federal laws.

    Application Notes

    • Before application test the sealer by applying in an inconspicuous area to ensure the desired coverage and appearance is achieved.
    • Do not use on extremely porous concrete or masonry such a hollow concrete block or bricks.
    • Do not over apply. Excess material may result in a white residue or discoloration.
    • Prevent from getting on glazed and finished surfaces such as glass, aluminum etc. In case of contact flush immediately with water.
    • Does not prevent equipment leaks or other leaks such as oil, hydraulic fluid etc. Use the Siloxa-Tek® 8505 or Siloxa-Tek® 8510 for oil repellency and staining resistance.
    • Do not use on concrete that has been previously sealed without chemically etching or mechanically scarifying.
    • Water repellency may take up to seven (7) days to develop.
  • FAQ

    What does wet-on-wet mean? Wet-on-wet means that the second coat is applied while the first coat is still wet. Two coats of the Lithi-Tek® 9500 are required wet-on-wet. The second coat is applied immediately after the first coat while the first coat is still wet. Since the Lithi-Tek® 9500 is a hydrophobic product it will try to repel the second coat if the second coat is applied after the first coat has dried.

    Can I walk on the first coat to apply the second coat? Yes, you can walk on the first coat to apply the second coat. Since the Lithi-Tek® 9500 is a penetrating sealer it will dry invisible and will not show footprints.

    What do you mix the concentrate with? The Lithi-Tek® 9500 concentrate is mixed with water. 1 gallon of Lithi-Tek® 9500 is mixed with 4 gallons of water. Distilled water is preferred.

    Can I paint after sealing? Yes, you can paint after applying the Lithi-Tek® 9500 as long as an oil or enamel based paint is used. Always make sure to test for comptaibility prior to use. Since the Lihti-Tek® 9500 is a hydrophobic sealer it will repel any latex or water based paints.

    Does the concrete need to be dry before sealing? Yes, the concrete needs to be as dry as possible before sealing in order for the substrate to absorb as much sealer as possible. We recommend the moisture content of the concrete be less than 4%wt. It is recommended to wait at least 24-48 hours after rain and pressure washing before sealing.

    My floor turned white after sealing, what happened? This is a common result of over application. Once the concrete reaches its point of absorption any material that was unable to penetrate reacts with the carbon dioxide in the air. This reaction leaves a white, powdery residue on the surface of the concrete. This can easily be removed by sweeping the concrete with a wire brush and then using a shop vac to get rid of the excess.

    Why cant I use this product on brick or concrete blocks? This product is not recommended for use on brick because the Lithi-Tek® 9500 is a penetrating, reactive sealer. Bricks do not contain enough free lime and calcium for the sealer to react with and this causes the bricks to dry with a white, powdery residure. This product is not recommended on concrete blocks because concrete blocks are extremely porous. The best product to seal bricks and concrete blocks is the Siloxa-Tek® 8500.

    How many gallons do I need to treat 1000 square feet? You will need 2 gallons to treat 1000 square feet. Each gallon of Lithi-Tek® 9500 will cover up to 1000 square feet per coat (or 500 square feet for both coats).

    What can I use to apply this product? The Lithi-Tek® 9500 can be applied with a garden variety pump sprayer, commercial grade sprayer, 3/8" nap paint roller or a brush.

    How do I mix the product with water? The Lithi-Tek® 9500 is a concentrated product that needs to be mixed with water prior to application. Pour the 1 gallon of Litih-Tek® 9500 into a 5 gallon bucket. Next add 4 gallons of water into the 5 gallon bucket. Mix the water and 9500 mixture well. You can then pour the mixture into a sprayer to spray apply, or you can did a nap paint roller into the bucket and roll apply.

    How do I clean out the sprayer after sealing? Since the Lithi-Tek® 9500 is a water based product you can use regular soap and water to clean out the sprayer and other application tools.

    Where can I buy this product? The Lithi-Tek® 9500 is available through a number of distributors found on our distributor page.

Product Comparisons

Uses Concrete Concrete, Masonry, Brick, Stone
Chemistry Proprietary Hybrid Technology Silane/Siloxane
Carrier Water-Based Water-Based
Finish Natural Natural
Color Clear Clear
Application Method Sprayer, Roller Sprayer, Roller
VOC Content 0 g/L 90 g/L