Lithi-Tek 9500 Ultra Concentrate - 1 Gallon (Makes 5 GALLONS) Penetrating Concrete Sealer, Waterproofer Plus Densifier

This is a very good DYI product. Moved into a 25 year old home with a very large exposed aggregate driveway, which had never been sealed. The driveway was showing signs of age with mold, stains, and typical discoloration. After obtaining proposals and quotes from contractors, I decided to do the work myself. I have used gloss surface coatings on other driveways, and while they looked great after the initial application, it was an annual project to maintain the results. LS 9500 provided the penetrating, chemical bonding sealer which would also strengthen the surface of the aggregate, that I was looking for. LS 9500 was easy to mix and apply, and I am very happy with results. Here are some tips to consider when using this product: 1. Power wash and completely clean the surface using a bio-friendly concrete cleaner 2. Remove all stains, oil spots, and any other surface contaminates using a commercially available concrete stain remover 3. Plan to apply the product on a completely clean and dry surface, during a time with no wind and temperatures in the 70's (I found early mornings worked the best) 4. Select a hand garden sprayer of your choice (A back pack sprayer can be used for a large area, but any size will do) 5. Measure the amount of LS9500 per the instructions ( I used 4 plastic containers with equal amount LS9500; so each container could be mixed with each gallon of water 6. Dress in long pants and work shoes, to avoid coming in contact with overspray 7. Spray LS9500 mix in a evenly applied sweeping fashion, with just enough coverage to dampen (wet) the concrete (not so much as to puddle the surface) 8. Work your way from your starting point to your finish point, keeping the concrete damp but not flooded 9. LS9500 dries quickly, so if you need to use multiple sprayer refills just continue where you left off and repeat the application technique 10. If some of the sealer starts to dry on the edges between refills it will be sealed, so minimize over-wetting these areas to reduce build up 11. The treated surface will look darker while drying, and lighten as LS9500 cures over the next several hours The results were impressive. The appearance of aggregate, with a natural clear finish, made the driveway look much younger than it's age. Now that it is water proof, surface water dries quickly and it resists staining and mold much better than before. It was a good investment of my time and money, and it was an easy DYI project to accomplish. I hope this overview of my experience was helpful.

It was the cheapest highly rated sealer so I bought it. It went on easily with a garden sprayer. The water beaded up after the first application, however the instructions say that you should do two applications. I will do a second application in the spring when we have temperatures above 50.

The concentrate mixed easily with water and sprayed well using my pressure sprayer. It covered and appeared to penetrate my basement walls and particularly around the bulkhead. I followed the directions and applied two coats in close succession. It looks good and will hopefully do the job of stopping water seepage into my cellar!

Lithi-Tek 9500 Ultra Concentrate is a high-performance concrete sealer that offers exceptional protection and durability for a variety of concrete surfaces. This concentrated formula is designed to penetrate deeply into the concrete, providing long-lasting benefits. One of the standout features of Lithi-Tek 9500 Ultra Concentrate is its water repellency. Upon application, it forms a hydrophobic barrier that prevents water and other liquids from penetrating the surface. This not only helps to prevent damage from freeze-thaw cycles but also reduces the potential for efflorescence and mold growth. The sealer's ability to densify the concrete is another key benefit. By reacting with the concrete's minerals, Lithi-Tek 9500 strengthens the surface and reduces porosity. This can enhance the concrete's resistance to wear, abrasion, and chemical damage, extending its lifespan. The versatile nature of this sealer is noteworthy. It can be used on a range of concrete surfaces, including driveways, sidewalks, industrial floors, and more. Its deep-penetrating properties mean that it works well for both interior and exterior applications. One potential consideration is the application process, which might require proper surface preparation and attention to detail to achieve the best results. Additionally, the concentrated nature of the formula requires proper dilution according to the manufacturer's instructions. In conclusion, Lithi-Tek 9500 Ultra Concentrate is a premium concrete sealer that offers impressive water repellency, densification, and durability. Its versatility and long-lasting protection make it a valuable choice for individuals seeking to enhance and protect their concrete surfaces.

We had a particularly wet and windy winter this year and it's been about five years since we've cleaned the driveway and pavers side section. It took about 2 days to pressure wash the entire driveway area, roughly about 1,500 sq. feet. After doing extensive research about concrete sealing products, we selected GhostShield, Lithi-Tek 9500 Concrete Sealer concentrate. The product comes in a 1-gallon container that makes 5 gallons of product to apply to your project. After letting the driveway dry for a couple of days after washing it, we were ready to apply the Lithi-Tek 9500. Using a 1-gallon pump sprayer, we mixed 1 gallon at a time and applied the sealer in sections in order to follow the manufacturer's directions of a wet-on-wet application. The Lithi-Tek 9500 went on easy and soaked into the concrete quickly. The application process was easy and quick; we were able to finish the project within 90 minutes. The driveway and pavers remained their original color and we had no blotchy spots. We are very happy with the outcome. Once finished, clean-up was easy. With some warm water and soap, we pumped the water through the tank and sprayer head and the pump is ready for the next project. Some notes on the mixing and application process: Mixing: Follow the directions: add the 4 cups to your pump sprayer. Then, using the same measuring container, measure and add water, instead of just filling the pump to the 1 gallon mark to get the correct ratio. It would help if you have someone mix a batch as you go so you could maintain wet surfaces without interruptions to mix a new batch each time. Or use a larger sprayer. We only had the single 1-gallon. Application: It’s important to apply the second coat while the first coat is still wet. Otherwise, if it becomes dry, the second coat will bead-up on the surface rather than soak into the concrete. Lastly: I would recommend that if possible, apply the product when your surface is shaded or at it’s coolest temperature to give yourself time to maintain the wet-on-wet application process to ensure good sealing. The first two photographs are the cleaned driveway and cement pavers that were coated. The next two photographs are the test images. In both images, you can plainly see that the water beads up on the driveway beautifully. We will see how the product holds-up across the summer and into next winter. We have high hopes of an easy to clean driveway next Spring.

I've used different sealers in the past but was displeased with their water repellent capability. I was impressed when I finally tried Lithi-Tek's 9500 on my concrete patio area. The price tag but it is worth every penny. The concentrate yields 4 gallons. It is very easy to use with a garden sprayer. Don't forget to clean and dry the surface before using this product. If you follow the directions of mixing 4:1 (4 parts water to one part concentrate) and simply spray it in a uniform manner, the results are great. Again, very impressed. You will notice it start to dry quickly so I suggest small small sections at a time and keep an eye on it so you can do the second coat before the first dries. You should do a second coat while the other is still wet so move quickly and consistently as you spray this down. The product is clear, has little to no odor, and has repelled water (which is what drove me to buy this) extremely well. I plan to buy more of this product to do other areas of my concrete. Now that I've used the product, I will not buy any other sealer. After I sprayed the sealer down and let it dry thoroughly, I showed my husband what I had done and he was impressed with the water beading off the concrete. I love this stuff!

Lithi-Tek 9500 Ultra Concentrate - 1 Gallon: Update: I purchased 2 more gallons this year. I ensured that it was applied quickly. Mostly one coat except in a couple of areas that were very permeable/porous. These areas readily accepted a second coat. I have increased by rating to 5 stars since over the last 2 years the product has held up and worked well. . Below is previous 2020 review: I found that the sealer would begin to have water-proofing effects within 1 minute of application. Any Lithi-Tek on my shoes when I was walking around could be clearly seen when the sealer was sprayed over those areas for the 1st time. Footprints could be seen where the sealer could not penetrate into the untreated concrete after only a few minutes. The small amount of sealer on the bottom of my shoes was enough to prevent proper 1st application in spots that I had stepped on. I could not see footprint spots two days later when it rained, as even a small amount of sealer caused the rain to bead up everywhere. . Other areas where the concrete was porous and permeable would accept a second coat with no problem(as long as they were still wet(had not dried). Any areas/sections that had a tiny amount of overspray when applying, on one section at a time, would not accept new sealer - as sealing action was already taking place in just a few minutes. . My worry is that any areas that did not get proper penetration will not hold up for long, and may not seal after a short time... . While spraying, ensure that each section is quickly covered(sprayed/applied) as even a minute of delay will cause issues with penetration and the concretes ability to accept the sealer. You can see where you stopped spraying and started up again a minute later. Be quick for proper application. . Concrete areas that are fairly dense, from perhaps mineralization over time, or maybe from initial compaction when the concrete was smoothed during the original pour of the slab, may not readily accept the sealer. Even a thin coat of sealer was adaquate for initial waterproofing. Time will tell for longevity. . I applied when the temperature was about 65deg F, and the humidity about 30 percent. I suspect that the low humidity caused thin amounts of sealer(overspray and foot print areas,etc) to dry quickly, causing penetration issues with successive application coats.

Highly effective with caveat below. Purchased to address humid conditions in a sealed room. Application is simple with typical low pressure garden sprayer. I noticed a difference within 24 hours so the sealer is obviously blocking moisture passing through the concrete floor. This product does need to be absorbed by concrete and will create mineral deposits if applied too heavily or absorption is inadequate. My floor is typical polished concrete and where I applied the product in a light spray there were no deposits. Where I applied in a heavier spray I had white deposits. I called the company beforehand and was warned of this and there is a note in the product literature. The company suggested another product (8515?) that is solvent based and absorbs better in polished concrete. But I was on a schedule and had this product already. The deposits are a nonissue for the purpose of the room. I tested on brushed concrete and there was no such problem. The literature recommends against use on cinder block due to high absorption of cmu. I sprayed two rows and have no idea if it was fully effective on it but it was absorbed rapidly. I plan on using the rest on exterior flatwork that is in the shade or more susceptible to cracking.