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Internet # 205212663

Model # 9500

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1 Gal. Invisible Penetrating Concrete Sealer, Waterproofer Plus Densifier

$99.88
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Product Details

About This Product

GHOSTSHIELD LITHI-TEK 9500: Our best-selling hybrid penetrating sealer also densifies-for unmatched protection and value. STRENGTHENS & SEALS: Put an end to mold, mildew, and water-related damage with a single application. This proprietary blend prevents cracking and surface abrasion by densifying the concrete, while simultaneously waterproofing the surface. COST-EFFECTIVE & CONCENTRATED: One-gallon concentrate makes 5 gallons - an unbeatable value. Easily applied with common painting tools, fast-drying, and usable outdoors and in on poured concrete not exposed to salt, Lithi-Tek 9500 is a popular choice to preventatively seal basement floors and poured walls against moisture. DRIES CLEAR & NATURAL: Provides a flat, natural finish and creates a long-lasting water-repellent surface that beads water. Treated concrete will not change in appearance, color or texture. *Not to be used on: Bricks/Concrete Blocks / Cinderblocks (Use Siloxa-Tek 8500), Polished or Extremely Smooth Concrete, Colored Concrete, As a Substitute for a Concrete Vapor Barrier or Foundation Concrete Membrane (can be used in conjunction with a concrete membrane).

Highlights

  • Concentrated: 1 Gal. makes 5 Gal. and covers up to 1000 sq. ft. 2 coats are recommended
  • 100% reactive - Hardens, densifies and waterproofs concrete, resisting water absorption, prolonging service life
  • Increases abrasion resistance - Tightly binds together concrete reducing concrete dusting.
  • Small molecular structure - Allows for deeper penetration and increased performance
  • Prevents ASR attacks by preventing the ingress of water
  • Provides increased protection - As a hydrophobic barrier to prevent future penetration of water and soluble aggressive agents
  • Reduction of water ingress - Moisture intrusion and vapor transmission
  • Does not alter surface appearance - The treated surface is natural, tack-free and slip-resistant and dries completely clear
  • Resists organic growth - Mold, mildew, lichen, efflorescence and dirt pick up
  • 100% breathable - Allows moisture to escape without damaging the sealer
  • Water-based - Proprietary environmentally friendly formula with no odor, no VOC's
  • Excellent penetration depth - Into any concrete substrate
  • Improves durability - Prevents capillary uptake of water and the aggressive substances dissolved in it
  • Natural flat finish - Does not change concretes surface appearance
  • Super UV stable - Resistant to ultra-violent radiation, will not yellow or fade
  • Online price includes PaintCare fee in the following states: CA, CO, CT, DC, ME, MN, OR, RI, VT, WA
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Product Information

Internet # 205212663

Model # 9500

Additional Resources

Shop All Ghostshield

Specifications

Dimensions

Container Size

1 Gallon

Coverage Area (sq. ft.)

1000 sq ft

Details

Application

Concrete Waterproofer/Sealer

Application Method

Brush, Pump-up Sprayer, Roller

Base Material

Water Based

Color Family

Clear

Color/Finish

Clear, Natural, Slightly Enhanced

Dry To Touch Time (hh:mm)

06:00

Finish Family

Natural

Interior/Exterior

Exterior, Interior

Maximum hydrostatic pressure (lb.)

0

Maximum Optimal Temperature (F)

90

Minimum Optimal Temperature (F)

45

Number per Package

1

Paint/Stain Features

Abrasion Resistant, Densifier, Dries Clear, Fast Drying, Low Odor, Low VOC, Mildew Resistant, Moisture Resistant, Mold Resistant, Sealer, UV/Fade Resistant, Waterproof

Recommended Number of Coats

2

Returnable

90-Day

Substrate/Surface Material Use

Concrete

Surface Location

Basement, Basement Floor, Basement Wall, Driveway, Exterior Wall, Foundation, Garage Floor, Garage Wall, Patio, Pool Deck

Transparency

Clear

Vertical/Horizontal

Vertical / Horizontal

Questions & Answers

Could you please confirm if the product is designed to be applied with a garden pump sprayer and what kind of tip is required?
BySep 14, 2026
1 Answer | 
Answer This Question

Yes, this product can be applied using a low-pressure garden style pump sprayer. A cone or fan tip is sufficient. You can also apply using a brush or roller.

By|Sep 16, 2026


    Will the sealer leave overlap marks if I roll on a second coat?
    ByAug 10, 2026
    3 Answers | 
    Answer This Question

    No. However, the second coat must be applied before the 2nd coat dries. Keep in mind, this is a penetrating sealer and although it can be applied with a roller, a garden style low pressure pump sprayer tends to the preferred method of application.

    By|Aug 11, 2026

      Not being a clear finish, you will not leave landmarks. And one thing I I left the letter

      By|Aug 11, 2026

      This product if applied per the directions, will not leave landmarks.

      By|Aug 11, 2026


      I need to polish a very small area of conrcrete, approx 14 sq. ft. Can I apply this product as a densifier, then complete the polishing, and then apply the same product as the sealer.
      ByJun 20, 2026
      1 Answer | 
      Answer This Question

      Thanks for showing an interest in Ghostshield products. To densify concrete when polishing, we recommend Lithi-Tek 4500. For a final sealer, we recommend Siloxa-Tek 8500 or 8505 when finishes are less than 800. For higher gloss finishes (800+) we recommend Siloxa-Tek 8510 or Iso-Tek 8540VOC (currently not offered on Lowes)

      By|Jun 22, 2026


        Can this be used indoors in a bedroom before laying new carpet?
        ByFeb 15, 2026
        0 Answer | 
        Answer This Question

        Can this product be used over a painted concrete surface (as a mural protectant)? We want a protectant applied after we paint this fountain.
        ByFeb 4, 2026
        1 Answer | 
        Answer This Question

        Thank you for considering Ghostshield! Lithi-tek 9500 requires direct contact with concrete, the layer of paint will prevent this from happening. As far as sealing paint, Cryli-tek 5500 or Cryli-tek 5505 may be the perfect product.

        By|Feb 6, 2026


          Can you use this on porcelain tile
          ByAug 25, 2025
          0 Answer | 
          Answer This Question

          I have water penetration in my basement floor through some cracks. Will Litho-Tek 9500 help to seal that floor and stop the penetration?
          ByAug 5, 2025
          1 Answer | 
          Answer This Question

          Thanks for showing an interest in Ghostshield products. Lithi-Tek 9500 is a sealer designed for application to the top of the concrete surface. It prevents water from absorbing into the concrete. What you are describing appears to be water that has already penetrated into the concrete from the positive side (outside or "wet" side). Water that enters concrete from the outside, it is under pressure and migrates towards the negative side (inside) trying to find the area of lower pressure. Lithi-Tek 9500 is not meant for this type of water intrusion.

          By|Aug 5, 2025


            I’ve recently applied Lithi-Tek 4500 to new garage concrete floor and have purchased Lithi-Tek 8505 for sealing after 7 days. I didn’t realize there was this hybrid 9500 version, which seems cheaper in terms of sq. ft. Is 9500 the same as 4500+8505?
            ByJul 23, 2025
            0 Answer | 
            Answer This Question

            Viewing 1-8 of 231

            Customer Reviews

            4.7 out of 5

            • 4.7 out of 895 reviews
            • 97% recommend this product
            Filter by:
            Showing 1-10 of 895 reviews
            BUYER BEWARE
            This product is terrible. Stains your driveway and customer service is of absolutely NO HELP!
            by
              1 found this review helpful
              I was a little skeptical but this product works as advertised, and while it seem expensive, this ...
              I was a little skeptical but this product works as advertised, and while it seem expensive, this is concentrate that makes up 5 gallons of spray that will protect your expensive flooring. After drying for a couple days I squirted some water on the floor, hours later it was still beading up on the concrete surface just like rain on the hood of a newly waxed car. I would definitely purchase it again if I ever need to do more waterproofing.
              by
              • Verified Purchase
              • Recommended
              2 found this review helpful
              I applied this product to week-old poured foundation walls with a simple garden sprayer with a fa...
              I applied this product to week-old poured foundation walls with a simple garden sprayer with a fan spray tip. It went on easily with no issues. They recommend a second coat while the concrete is still damp, but when I went back to add the second coat, most of it was already fully waterproofed, with the solutions beading up and rolling off. Touching up a few still porous spots was a breeze and I am very satisfied with the result. Having dealt with a wet basement in the past, I believe this product will make for a much less humid and damp basement, especially when coupled with a footer drain system on the exterior. I also tried another sealer in this site, Foundation Armor S2000, and it did not seal as well as this product. Also, it may look like the S2000 is less expensive, but it is diluted 3:1 water to solution, while this product is 4:1, making it pretty much a wash.
              by
                • Recommended
                5 found this review helpful
                Stained my driveway
                This product stained my driveway terribly. I sprayed a light coat over the driveway and gave it a second coat before it dried as the instructions state, but it ended up stained everything. There are brown and greenish blotches scattered randomly throughout. The label says that staining can occur from over application, but I ended up only using half the recommended volume. One and a half gallons did two coats on over 1500 sq ft, so I'm not sure how I could have over applied the product. Some of the drive way turned out fine, but the random blotches make the drive way look terrible. Not worth the cost.
                by
                  18 found this review helpful
                  Works Very Well
                  Product mixed easily. I applied it with a cheap tank sprayer. Went on well and very quickly. I did about 1,000 SQ FT. It has it's chemical effect very quickly. I noticed where I had some overspray the second coat would already not soak into the surface. I observed the water resistant effect the first time it rained. Water simply beads up. It will not soak in. I applied the product to the sidewalk in front of my house, but only to my property line. I cut off the application at a joint in the cement. I have attached a picture of the area where my application ended after having thrown a bucket of water on it. It's easy to see on the bottom, light color cement because of no penetration, on the top, dark color because the water soaks into the untreated cement. These results sell everyone who looks at it on the product. I have sealed concreate driveways since 2005 and this is the best results I have ever seen. And the price is less than the sealer the cement contractor wanted to sell me. (Diamond coat or something like that) If this product lasts like promised it will put all other similar products out of business. I applied this at the end of June, 2016.
                  by
                  • DIY
                  • Verified Purchase
                  • Recommended
                  15 found this review helpful
                  Not quite invisible
                  The product looked terrible on my 35 day old driveway, dried very blotchy and uneven, as opposed to invisible as described. The company said, The variation in color is related to the concentration of portlandite present (previously not visible) but illuminated by the sealers reaction. The company was helpful in refunding me and sending me a non reactive sealer as I elected to acid wash the 9500 off of the concrete, but this significantly darkens the concrete. Not to mention the hours of labor involved in correcting the issue. I would steer clear of this product if you are sealing new concrete.
                  by
                  Response from THD-CSDec 17, 2015
                  Dear Valued Home Depot Customer, we reached out to the manufacturer and their Reply is, " Ghostshield’s sealer formulas are developed utilizing nanotechnology, the smallest atomic structures possible, resulting in active particles small enough to travel through a grain of sand. The Lithi-Tek LS® 9500 is a reactive sealer, it waterproofs and seals the concrete internally from within the pores and capillaries. Contrast to conventional topical waterproofing concrete sealers, the Lithi-Tek LS® 9500 penetrates deep into concrete and mineral based substrates seeking out the calcium hydroxide also known as portlandite a by product of cement hydration in order to produce C-S-H (calcium silicate hydrate) reducing the porosity and permeability of the concrete rendering it waterproof. For best practice consumer discretion should be exercised when applying a reactive sealer, this includes being consistent with the application to ensure even coverage and a uniformed seal. The Lithi-Tek LS® 9500 is not recommended for colored concrete as a reactive sealer may result in an uneven appearance.
                  • Verified Purchase
                  19 found this review helpful
                  White patches on brick after rain!
                  I used this on a brick porch. The bricks are uneven, so there was some pooling after application. The problem was after a few rains, there are many white patches which persist. I had to hire two people to wire brush the brick porch. It took several hours to remove much of the caked residue. The porch was thoroughly cleaned and scrubbed before application. I hope more ugly white patches don't develop.
                  by
                  Response from THD-CSDec 17, 2015
                  Dear Valued Home Depot Customer, we reached out to the manufacturer and their Reply is, "Lithi-Tek LS® 9500 is a concentrated high performance, breathable, water-based, VOC compliant, deep penetrating concrete waterproofing sealer plus densifier designed to reduce water-soluble deleterious materials and moisture intrusion. The Lithi-Tek® LS 9500 works great for poured and cast in place concrete but because it is a hybrid lithium based penetrating reactive sealer it relies heavily on calcium hydroxide (also known as portlandite) a byproduct of cement hydration in order to produce C-S-H (calcium silicate hydrate) the same binding element that results from adding water to cement in order to be completely effective. The Lith-Tek LS® 9500 is not intended to treat clay bricks due to their lack of calcium hydroxide and when applied to substrates other then concrete, the Lithi-Tek LS® 9500 has nothing to react with therefore creating a white unreacted residue on the surface. As an alternative, a high solids silane/siloxane such as our Siloxa-Tek® 8500 should be used since silanes and siloxanes are very hydrophobic but neither rely on calcium hydroxide being present in order to be effective.
                  • DIY
                  • Verified Purchase
                  14 found this review helpful
                  This is the second time in 10 years to use the product, which made pressure washing the driveway easier this time around. Rain on the treated concrete is very evident as it beads and runs off.
                  by
                  Went on with roller well. No overlap marks. Noticed the result the next day after a rain. Roller application will pick up hidden dirt on driveway. Not a problem with spraying application. Spraying may use more chemical. Bought in August of 2026. The estimated coverage seems accurate. So far it has met my expectation. Had to order but free home delivery.
                  by
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Showing 1-10 of 895 reviews

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                  Product Snapshot

                  Ideal for concrete surfaces, this sealer offers waterproofing, densifying, and UV protection for enhanced durability and a natural finish.
                  Ideal for waterproofing concrete, masonry, metal, and vinyl. UV and mildew resistant, dries clear in 2-4 hours.
                  Ideal for enhancing concrete surfaces with a high-gloss, UV-resistant, and long-lasting protective finish.
                  Ideal for homeowners looking for long-lasting concrete protection, making waterproofing easier and more efficient.

                  Coverage Area

                  1000 sq ft/gal (5 gal diluted)
                  1500 sq. ft./5 gal.
                  1000 sq. ft./5 gal.
                  1500 sq ft/gallon

                  Water Resistance

                  UV Protection

                  Drying Time

                  6 hours
                  2-4 hours
                  4 hours
                  2 hours

                  Slip Resistance