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 cleaner2. Remove all stains, oil spots, and any other surface contaminates using a commercially available concrete stain remover3. 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 water6. Dress in long pants and work shoes, to avoid coming in contact with overspray7. 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 flooded9. LS9500 dries quickly, so if you need to use multiple sprayer refills just continue where you left off and repeat the application technique10. 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 up11. The treated surface will look darker while drying, and lighten as LS9500 cures over the next several hoursThe 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.

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!

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!

Very good product, it was the best solution to seal my new 24 X 20 concrete shop floor. I liked the fact I could order one gallon and make five gallons. I followed the instructions worked on fairly small sections at a time. The floor was sealed from liquids very well and the dust from new concrete stopped all together. Afterwards my compressor leaked a little rusty water on the newly sealed floor, it wiped right up.