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Model #4500

Store SKU #1001251008

1 gal. Invisible Penetrating Concrete Sealer Plus Densifier and Hardener

$7988
/gallon
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  • Strengthens concrete making it up to 50% stronger
  • Dries clear and mildew/UV fade resistant
  • Covers up to 750 sq. ft.
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Product Details

Lithi-Tek 4500 is the most advanced concrete densifier available. This clear penetrating sealer not only densifies and hardens concrete making it up to 50% stronger, but it the go to choice to harden and prime basements and driveways. It is also an excellent choice for polishing concrete.
  • Increases abrasion resistance. Reduces dusting. Strengthens concrete by up to 50%.
  • Reduction of dirt pick-up, reduces risk of efflorescence, protection against micro-organism growth.
  • Effective penetration depth, seals pores and capillaries while remaining breathable, no change in appearance of the substrate; the treated surface does not become glossy but remains clear and natural.
  • Tack free, durable finish, no formation of harmful by-products, no VOC's, UV resistant.
  • Supplied concentrated: mixes with distlled water. 1 gallon makes 3 gallons.
  • UV resistant
  • Online price includes PaintCare fee in the following states: CA, CO, CT, DC, ME, MN, OR, RI, VT, WA
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Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

40Questions
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Q:Can i use this to line interior of a septic tank ?
by|Nov 19, 2022
0 Answer
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Q:Can I use 4500 Invisible Penetrating Concrete Sealer Plus Densifier and Hardener and 8505 Invisible Penetrating Concrete and Masonry Water Repellent Sealer Plus Oil Repellent on top of the Hardener?
by|Jul 9, 2022
1 Answer
Answer This Question

A:  Thank you for showing an interest in Ghostshield. Yes, we recommend Lithi-Tek 4500 as a primer prior to Siloxa-Tek 8500 and/or Siloxa-Tek 8505. Follow directions on label. You must wait at 7 days after applying 4500 before applying 8505.

by|Jul 10, 2022
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    Q:Can this be burnished for a "shinier" finish. If so what pad can be used. I Did read about how the 4500 is not meant to be a shiny finish as applied.
    by|May 26, 2022
    1 Answer
    Answer This Question

    A:  Thanks for considering Ghostshield products. Lithi-Tek 4500 is a fully penetrating siliconate densifier / hardener. It works by forming crystalline structures deep inside the pores of the concrete to increase the internal density (mass) and reduce surface porosity. It can take up to 7 days for these crystalline structures to form. Densifiers are often used as a polishing aid... as it help produce a more "solid" surface. However, it is not a film-forming coating. It does not leave behind a film or change the appearance of the original concrete surface. If you wish to burnish the concrete surface after applying Lithi-Tek 4500, follow the normal procedure for burnishing.

    by|May 27, 2022
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      Q:Once this product has been applied , What is best to apply , after, as a top coat to maintain shine and smoothness ?
      by|Apr 23, 2022
      1 Answer
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      A:  Thank you for showing an interest in Ghostshield. Once Lithi-Tek 4500 is applied, wait 7 days for full cure before applying top coat. If you are looking for a high gloss sealer, we recommend top coating with Cryli-Tek 5505. For a low gloss, we recommend Cryli-Tek 5500.

      by|Apr 23, 2022
        Showing 1-4 of 40
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        Customer Reviews

        4.7 out of 5
        (127)
        • 4.7
          out of 127 reviews
        • 96%recommend this product
        Filter by:
        Showing 1-10 of 127 reviews
        I would highly recommend this product. It was easy to apply. Be very careful not to over apply ...
        I would highly recommend this product. It was easy to apply. Be very careful not to over apply product due to it will leave a white residue. This happened to me on my driveway. But I am still pleased with the product and know it will seal my concrete for a long time.
        by
        • DIY
        • Recommended
        Ghostshield
        The Ghostshield concentrated was very easy to apply. However, I did not clean up the excess in time and this caused some white residue on my driveway. However, I am pleased with this product. I am confident that it will seal my concrete for years.
        by
          • Recommended
          Outstanding customer service/support/consultation by Lou and Jenna in addition to great product!
          Product selection perfectly matched my needs for application and performance. Couldn’t be more pleased. Made possible by Lou’s expertise and considerate manner. Product application was accomplished exactly as advertised and described by Lou. Delivery was quick and easy.
          by
            • Recommended
            Use with 9500
            I wanted to get the absolute best results so I contacted Ghostshield and told them my situation. They recommended 4500 followed by the 8500 for my badly worn 98 year old concrete. I had already purchased the 9500 and had it laying around and they said it would work as a substitute for the 8500. After cleaning, acid etching, and neutralizing and letting the concrete dry I applied the 4500. Apply it thinly or it may show white residue. The residue can be scrubbed off. I let the 4500 cure for 7 days then I applied the 9500--2 coats. I had significant efflorescence, dusting, etc prior to sealing with this two coat process. I can tell you the efflorescence has been reduced significantly and water beads right off. Hope this helps someone trying to find their way in the crowded world of concrete sealers.
            by
              • Recommended
              10 found this review helpful
              by
              • Verified Purchase
              4500 densifier
              Great product. Simple to mix and apply. Worth ever penny
              by
                • Recommended
                Went down as advertised...looks good, just waiting the 5 days to put down the 8510
                Went down as advertised, waiting the 5 days to put down the 8510. No idea about performance yet
                by
                  • Recommended
                  Top of the line Works Great.
                  I love the ease of use with this product and the long-lasting results, using densifier with later applying sealer to finish of sealing and preserving a coral stone deck and front door entry.
                  by
                    • Recommended
                    I had the concrete people look at the product after...
                    I had the concrete people look at the product after I applied it. They read the container and said it may be okay perhaps as a hardener but not as a sealer as indicated. No water beads when it rains. In their opinion it's not a sealer. So now I have to go out and buy a true sealer and hope I can catch a weather break to apply. I bought two of these and applied a double coat. Not as advertised.
                    by
                      The 1-2 punch my damp basement needed!!
                      After much research and reading many reviews, I used the Lithi-Tek 4500 to prime and strengthen my basement floor before sealing with Siloxa-Tek 8500. For years I had been forced to run a dehumidifier in each area of my basement to keep the musty smell at bay. I had tried epoxy coatings and even after carefully following the application instructions I had some areas where the coating lifted. After our house fire we rebuilt on the existing basement. I had the walls and floor thoroughly sand blasted to remove the smoke & all previous coatings. I took Lou's product advice and application instructions to heart. I applied using a 1/2 nap roller. I worked in 10' X 10' sections and was sure to apply the second coat before allowing the first to dry completely. I allowed an extra 5 days cure time for the 4500 before applying the 8500. I do not have to run a single dehumidifier! Three and half years after sealing the concrete we had a plumbing leak. One corner of the basement carpet was soaked for three days, We pulled the carpet up and removed the saturated pad. After removing the standing water with a shop vac the concrete floor was completely dry in less than 10 minutes. What a great product!! I highly recommend Ghost Shield. Kudos to Lou for his technical expertise and advice!
                      by
                        • Recommended
                        Showing 1-10 of 127 reviews

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                        Ratings
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                        Container Size1 Gallon5 Gallon1 Gallon5 Gallon
                        TransparencyClearClearClearClear
                        Paint/Stain FeaturesAbrasion Resistant,Densifier,Dries Clear,Low Odor,Low VOC,Mildew Resistant,One Coat Coverage,UV/Fade ResistantWaterproofDries Clear,Mildew Resistant,Moisture Resistant,UV/Fade Resistant,WaterproofDries Clear,UV/Fade Resistant
                        Surface LocationBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage Wall,PatioDriveway,Garage Floor,Pavers,PoolBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage WallExterior Wall
                        Base MaterialWater BasedWater BasedWater BasedWater Based
                        Stain & Sealer In OneNoYesNoNo
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