RadonSeal Standard Concrete Sealer, Deep-Penetrating Clear Protectant, 5-Gallon – Indoor & Outdoor Waterproofing for Poured Surfaces, Basement Floors, Driveways & Slabs – Radon Gas Mitigation

I bought three 5 gallon buckets (one at a time) of this to seal my basement. I had planned just to do one area of floor and the walls with my first bucket but liked it so much I ended doing all walls and floors in my basement. I also used one bucket of Ion Bond Armor for the room I really wanted sealed and used the extra on the most damp walls after using this sealer.I had to remove a lot of old sealer paint and other stuff on the 60 year old walls. I bought the Bosch Concrete Surface Grinder and ground off all the stuff down to bare concrete before spraying the sealer. After spraying it pushed a lot of the white stuff back out. I bought the cleaner and planned to use it to clean the walls after sealing, but it did not work at all in my case. I spent a lot of time on the phone with Radon Seal and they were very helpful. You have to understand that every basement project is slightly different and there are unique snags. It seems in my case I waited too long to use the cleaner (only two weeks) but I may have had calcium carbonate form. I ended up just using the grinder to clean the walls. I highly recommend the Bosch Concrete Grinder but cannot recommend the Radon Seal Cleaner.After sealing and putting Ion Bond the floors are really well sealed. However, I was under the impression that it would leave the surface able to be painted but in my case water beads up and stays for more than an hour. I have been afraid to try to paint like this, but I am happy with the sealed concrete and may not need to paint. I tried to call Radon Seal to discuss painting after sealing but we must have got wires crossed since they did not return my call, which is unusual given the long phone calls I had with them previously. I will try to cal them again when I have time.All said, I would definitely recommend this sealer and the Ion Bond Armor as well as the Bosch Concrete Surface Grinder. I would not recommend the cleaner. I bought the crack filler foam kit but have not used it yet.One other thing, these guys have a very good web site with tons of information. They said that their main customer service problem is people who buy the stuff but do not go to the Radon Seal web site to read all the information before they start the project. You need to make sure the concrete is bare and will absorb water. I had a couple spots that I did not grind enough and when I said the sealer not soaking in I got the grinder out and went over that spot again and it went fine.You need to realize that doing this is a big project. Granted I had some pretty messy old walls to start with, but the grinding and prep work took a huge amount of time. I have been on the project nearly three months, most of the time grinding. However, putting the sealer on will take about 50 minutes a coat (two or three) plus waiting two or three hours then hosing and scrubbing to make sure there is not excess left clogging the surface. In my case I did this in stages and there were eight or ten days devoted to spraying the sealer since I had to move stuff around to be able to clear an area for working on.11/27/2014 update.I painted two walls in my garage that were sealed with RadonSeal Plus and Ion Bond Armor. I used Behr Concrete and Masonry Paint (the one with no water proofing). I had been concerned about painting because the floor which was sealed the same way beads up water for many hours and I thought the paint might not sink in enough. The paint sent on well and after a month or two it seems to be holding up without any signs of lifting or pealing. I also have been able to patch some holes with epoxy enhanced patching concrete and it seems to attach well to the already sealed concrete walls and floors.The basement seems to be well sealed now. During the late summer I did not see a huge humidity drop and continued to run my dehumidifier. Without the dehumidifier it seemed to have about 55% RH, possibly due to air still coming in through my garage which under the house and part of the basement. I also have two sump pump pits with water in them that are not yet covered to block evaporation. In years past, without a dehumidifier, the labels peeled off of my wine bottles. Now, in the winter, the RH in the basement is less than the main floor, both with no dehumidifier. There is no sign of any moisture on the walls or eflourescence coming out of the concrete.All said, it was a huge amount of work but I am pleased with the result.

The sealer seemed to work well. I guess i dont really know as you cant see it, but it did expel salts and/or lime as it cured. So I assume it did something. Need to follow up with the Ion Bond Armour as they suggest. But one thing is for sure, the customer service is outstanding. I called a few times over the prior month just to be sure i was prepping the wall and preparing myself to do the job. Each time the guy I spoke with spent time going over everything. And never once seemed put out by it. Really appreciated that effort.

I got this to seal a 60 year old basement floor that was producing a lot of dust. The floor was very thirsty so a single 5 gallon bucket wasn't enough for a single coat. I got a second 5-gal and kept applying until the floor stopped absorbing it. That was about 6 months ago and the floor seems to be well sealed. The surface does indeed seem to have tightened up and hardened and it no longer sheds a discernable amount of dust.- Update - It's over a year since application and I'm very happy with the results. This product did change the surface to the concrete so that it's now tight and no longer sheds any dust. It isn't simply a coating. Instead it penetrates the surface layer and changes it.

They made me edit my 1st review that's how bad this company is. I think it was just water because it had no smell to it. Short answer....I bought 2 five gallon buckets which was too much so they said I could return one but took over half my money for a restocking fee after they received it. It was not open and in the same package. A racket.

So we cleaned the floor, sealed up cracks with epoxy or caulk and went to move onto his ealer in our poured concrete crawl space. We sprayed water, then did two applications of the product, 30 minutes apart with a sprayer and a brush. It was odorless.Interestingly enough after about an hour we went back downstairs and it smells like smoke to me now. I am not sure if this is the combination of minerals that were pushed out or if a previous home owner may have smoked and we are smelling that because we have never smelled any smoke in our home at all in the 20 years we have been here.You can tell the sealer worked and it caused white build up to kinda push out of the cement and the walls. We got a radon mitigation system already installed and we hope this will continue to bring down the levels as much as possible as we complete the basement.

Our garage floor was "dusting" so terribly. Almost 30 years old and we kept it covered with old carpeting. Apparently the slab was poured and then it rained shortly after it was poured and this is what happens. Even a small sweep raised a cloud of concrete dust. It was just terrible. After much research we decided to give this product a try. I was just about ready to take the hit and purchase garage floor mats. My husband convinced me to give this product a try before we spent $1200 on garage floor mats. I am so glad he did. It was a bit of work emptying out the garage and all, but I have to say the results are truly amazing. After following the directions for old garage floors, a week later we were able to paint the floor with a garage floor paint ( and not the expensive epoxy kind) and it looks great!!!!!! I think we spent under $300 total and the floor looks great and IS completely sealed. I park my car in the garage and the paint looks great under the tire areas. I have parked my rain soaked car in the garage and the water repels off the garage floor. Highly recommend for problematic floors like ours. Wish we would have found this product years ago!!!!! It really is amazing!!!

While the product itself seems good and easy to apply, the instructions estimate is way too low. I covered over 1000 square feet 2x with just 1.5 buckets. I had to spend $600 in shipping with UPS to return the unused product.