Lithi-Tek 4500 - 1 Gallon Penetrating Concrete Sealer and Densifier

Got this to fortify my concrete driveway to survive harsh Nebraska winters and all the salt thrown down that eats away concrete. Since my driveway is an incline, I didn't want a sealant that would bead water on the surface, so as to not create an ice sheet during the winter. For these purposes, this product worked great! My driveway survived well, but the sidewalks on both sides of the bottom of my driveway, which i didn't spray with this densifier, had flaking chips breaking off the surface after this winter's melt. So, this summer, I bought more and densified my sidewalks as well in prep for the upcoming winter. Definitely recommend!!

Quick shipping, and I am very satisfied with the results. Application was easy with handheld pump sprayer, and waterproofing effects on my pool deck were noted soon afterwards. Will purchase again for future projects.

Had bad concrete job done with lots of chalking and dusting. I ground down the top, vacuumed and put this hardener on before putting cement underlayment over it. Hopefully this will make for a lasting foundation under my closet and no dust to worry about. It was extremely simple to apply!

I can't speak to the longevity of this product, however it went on very well and certainly seemed to seal up my 30ish day old concrete slab. The slab itself did feel a bit denser to the touch, and it clearly reduced the amount of sealant needed. For instance I had estimated needing about 2.5 gallons of their 8505 sealant based on the published coverage rates. However after the 4500 I only used about 1.25 gallons of the 8505 sealant. For such a new concrete I definitely underestimated the coverage of the 4500 following their 1:1 dilution ratio and should have purchased more 4500 and less 8500. Immediately after application, be aware that the concrete may look very veiny, but neither product has changed the appearance once fully cured.

I used the Lithitek 4500 as a “primer” before applying the Siloxa 8510 sealer.l for my new garage. Works greats so far. I applied the 4500 first, waited a week, then applied the 8510. Water just beads up in the concrete floor instead of soaking in and creating a wet spot. I like that it soaks in to the concrete instead of creating a surface barrier. I prefer the look of dry concrete instead of having a shiny gloss coating. I haven’t tested oil repellency yet, and not sure if I want to. I might drop some in a corner where I’ll never see it and see how well it cleans up.