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!!

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.

Until I finish I can only say that it was easy to apply.

My new construction home had one unfinished concrete floor in the utility room. This floor continued to be dusty no matter how much it was vacuumed or swept. This appeared to be due to improper curing or mixing of the concrete. After cleaning the floor, I used a paint roller to liberally apply one gallon of uncut Lithitek to cover the ~8x12 floor. It wasn't pretty, but after a few days of drying the floor's surface was harder and no longer created concrete dust.

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.

Easily applied Ghostshield 4500 using a 1-gallon sprayer full strength; I wanted to strengthen both my walkway and driveway. 24-hrs it was ready for the sealer. Very pleased with the initial results. Only time will tell if the concrete shows little wear. I would and did purchase more after this initial application to the remainder of my driveway. Got the first smaller amount for a test. It passed that test with flying colors.

Do research as to the purpose of this product.I imagine that it does basically what it says it does.There were plenty of what seem like sponsored reviews, and I was sure to place those reviews in that context. There were a couple, maybe 3 scholarly articles that attempted to verify the manufacturers claims about the densification hardening and sealing. I recommend reading those before buying this to repair or help a weak concrete surface. This placed my expectations into context.What i learned during my research (forums, concrete institutions, and a few scholarly articles):A weak concrete pour cannot be made strong, with the material that is already part of the weak pour.Densifiers and sealers can make the symptoms less noticeable.A weak concrete will remain weak no matter what one applies to the surface.Sealers help with the symptoms of a weak concrete pour.Top coats like epoxy and others mechanically work to make a weak pour seem stronger and may be what one is looking for.There is no commercially available chemical process to make a weak concrete significantly stronger.

Really easy to put on and I could tell that my concrete was not leaving a light powder under my feet after application. It worked great for prepping a concrete coating.