Model # 186010050

Internet #204414391

Store SKU #1000021560

Rapid Set 50 lb. CTS Concrete Leveler
0727096562501

Rapid Set

50 lb. CTS Concrete Leveler

  • Ready to walk on in 3-4 hours
  • Install ceramic tile in just 4 hours
  • Easy to use, just add water
$34.97 / each
If you buy 56 or more
$24.48 / each

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Product Overview

Rapid Set Concrete Leveler is a high quality, fast-setting, self-leveling underlayment for your flooring needs. It is ideal for new floor and repair projects when you need long flow life and working time. Concrete Leveler achieves high 24-hour strength and can be covered with finished flooring in 4 to 16 hours at 70 Degree F (21 Degree C), depending on the flooring type. It can be used indoors and outdoors.

California residents: see   Proposition 65 information

  • Apply from featheredge to 2 in. thick neat
  • Apply up to 5 in. thick when extended with aggregate
  • Improves bond strength and adhesion
  • Walk on in 3 to 4 hours
  • Install ceramic tile in 4 hours and other floor coverings in 6 to 16 hours
  • One 50 lb. bag covers 24-30 sq. ft. at 1/4 in. thick for flat surfaces
  • One 50-lb bag covers 12-15 sq. ft. at 1/2in. thick for flat surfaces
  • Learn more about concrete and cement here in our Buying Guide



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Customer Questions & Answers

92 Questions125 Answers

Customer Questions & Answers

50 lb. CTS Concrete Leveler
50 lb. CTS Concrete Leveler

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4 answers

What is the coverage per bag (average expectations)

This question is from 50 lb. CTS Concrete Leveler
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Mesa AZ
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March 24, 2015
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Asked by
Jacksonville, FL, USA
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March 28, 2015
Answer: 
It depends on how unleveled your surface is. The wed site has in online.
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March 27, 2015
Answer: 
It depends upon the thickness, for 1/4 in thickness the bag covers 24-30 sq. ft. and 1/2 in thickness it covers 12-15 sq. ft.
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Northern California
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March 24, 2015
Answer: 
I covered a 4ft x 6ft area 1/2 inch deep
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March 24, 2015
Answer: 
You can get between 24-30 square feet at a 1/4" pour with the Rapid Set Concrete Leveler.
Thank you for choosing Rapid Set!
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2 answers

Can it be used on OSB.

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September 19, 2016
Can the product be used to level an OSB floor. My application would consist of priming the floor. Using rapid set floor primer. Installing expanded metal lath and securing to the floor then using the rapid set concrete leveler to level the floor. Is this correct. Not sure about application please advise.
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Asked by
Yorktown, NY
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October 7, 2016
Answer: 
This product is not made to be exposed. It's made as a floor underlayment, thus it should be covered by other flooring as a tile, laminate or wood flooring etc
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nyc ny
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September 20, 2016
Answer: 
As many report...you will have cracks and the cracks will transfer to the tiles. The problem with sheeted material as underlayment is the formation of cracks at the borders of the sheeting. If you absolutely must use sheeting it's better to use multiple thin sheets layers laid in different directions so that the pattern alternates borders and non borders in the layers. The metal lath is not needed and Read More
As many report...you will have cracks and the cracks will transfer to the tiles. The problem with sheeted material as underlayment is the formation of cracks at the borders of the sheeting. If you absolutely must use sheeting it's better to use multiple thin sheets layers laid in different directions so that the pattern alternates borders and non borders in the layers. The metal lath is not needed and will only require a thicker pour. Read Less
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Can I mix more than one bag at atime? Like 3 or 4 in a big barrel?

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September 4, 2016
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Asked by
Yorktown, NY
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October 7, 2016
Answer: 
If only one person is applying leveler, mixing of larger amount is not recommended. The mix starts harden soon and gets thicker pretty fast.
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nyc ny
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September 4, 2016
Answer: 
I'm going to say no. Best results are one bag at a time . Mixing multiple bags at a time often results in the peanut size nuggets others have reported.
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Leveling spots on old concrete patio for paver installation - do I need to prime?

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NJ
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August 17, 2016
We have an older concrete patio. I have a few low spots that I need to level. We will be putting concrete pavers on top layed in a 1/2" stone dust base. Do I need to prime the patio area before application or after (on top of the new pour) before proceeding with my paver installation?
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Asked by
Yorktown, NY
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October 7, 2016
Answer: 
The priming is applied between old surface and concrete leveler. Prime is recommended as it makes better adhesion of old concrete to concrete leveler That's all purpose of primer. It's not necessary to prime if the top of your old concrete will be well cleaned. After leveler hardens (see instructions), proceed with your paver installation.
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Asked by
San Diego, CA, USA
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August 17, 2016
Answer: 
I would definitely use the primer first, you don't want to have to pull up everything and re-do the leveling because the leveler didn't properly adhere.
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Customer Reviews

50 lb. CTS Concrete Leveler is rated 4.0 out of 5 by 26.
Rated 4 out of 5 by from Not quite self leveling as indicated in write up. tricky but not impossible to make work So as you can read...there's a mix of good and mix of bad reviews for this product. I bought 36 bags so far so after numerous trial and errors I was able to get it to work. I do agree that the water recomendations on the bag lacks the factors that apparently makes a difference between cake frosting texture and a free flowing mixture. maybe water hardness, clorine in the water, humidity , temps, who knows why folks using the same mix are getting different results. one of the problems is a review resonse says mix for 4 minutes...but the setting time is 15 minutes...so does that leave 9 minutes to get the stuff laid ouT. I defintely had to use more water than indicated and mixing longer was not a factor in making the suff more fluid.....adding water a little at a time while mixing was the only way to get this to a free flow form...AND this stuff has very limted self leveling capabilities.....I doubt that you would get any self leveling effect if you put more than a coffee can full of this stuff per 2 square feet. The good news is that the stuff seems to balance out and blends well into adjoing areas. Watering this stuff...even with a midl mist seems to be a big mistake...until its fully cured...it seems sensitive to watering and the adding of water seems to disolve the surface of the pour resulting in texture changes based on the water spray pattern as well as discoloring the misted areas. The balls of dry mix is a problem and very difficult to eliminate especially if you mix more than a bag of this at a time. This is a very difficult product to use on large areas such as a 15X45 foot garage floor...AND..after using 36 bags of this stuff AM of the conviction that its best suited for underlayment of a bathroom size area where the limitation of mixing one bag at a time and the fast setting time is less of a problem since you could probally knock out a bathroom with 4 bags. LASTLY, why on earth would you make this set fast setting....common sense is that longer setting time would be a plus so that you have more time to work the bugs out and get this a s level as possible. I had to add 3% sugar to this stuff to slow the cure rate down enough so that it would not set too fast. The resulting surface does not look like it can take a lot of foot traffic in an exposed state so I am not quite sure this is really a cement product......it seems very sensitive to water early in the process and the resulting surface looks very fragile. Recomendations would be to buy a bag and try it out and get a good understanding of the mix ratio and product limtations. For the amoun of money over the cost of basic portland cement...the value of what is supposed to be "self-levling" is just not there. Maybe we have to high of an expectation for what "self-leving " is....plain water is self leveling..ketchup is not...this behaves more like ketchup than water. Get yourself some spike shoes so that you can walk over the pour and not have any foot prints....it makes a difference when you are re-walking the area to balance out the level of the poor.
Date published: 2016-08-09
Rated 5 out of 5 by from I was actually scared to use this stuff after reading all of the negative reviews. At Home Depot ... I was actually scared to use this stuff after reading all of the negative reviews. At Home Depot they had product that was more than one year old, but I took a chance with it. I could not be happier with the result- leveled an entire garage bay that a previous home owner had poorly finished. I used 5 quarts of water- or maybe 5.5 per bag if I wanted a thinner coat. What I did learn is that you have to really mix this stuff well for several minutes (used a 5 gallon bucket, heavy drill, and a drywall joint compound bit) one bag at a time, and you have to rinse the bucket each time to avoid getting chunks. Also don't slam the bucket down (again chunks), just pour it out and spread it with the masonry broom flipped upside down pulling even it from side to side. I would recommend the primer as it kept the air bubbles out. I used two coats in the end, because I had some drips with the masonry broom I was using to spread it (don't pick it up). Poured the second coat 14 hours after the first. I am handy, but no concrete pro. The finish product was a perfectly even floor. This stuff is amazingly durable, and is still curing. I poured with the temp at 50 in the day and 30 at night. It took 11 bags for 260 square feet. It does cure quickly, and its easiest with one mixing and one spreading, but if you move quickly you can do it alone. I learned to just spread it even as quickly as possible, and give it time to level itself for the perfect garage floor. Thanks Rapid Set- one great product!
Date published: 2016-12-29
Rated 5 out of 5 by from Easy to Use I tore up the carpet in my condo only to find that the concrete was mostly cracked leveler that wasn't actually stuck to the floor (which was a good thing, as I'd rather redo leveler than broken concrete, but kind of bad as apparently half my unit is sinking into the ground). I can't stress mixing it enough for proper flow, but if you mix it thoroughly, it does exactly what it's supposed to. I'm 5 bags in and will be going for a 6th and hopefully final bag tomorrow.
Date published: 2016-07-26
Rated 3 out of 5 by from I left an earlier review stating that I was unhappy with the viscosity and work-ability of this p... I left an earlier review stating that I was unhappy with the viscosity and work-ability of this product at the recommended mixing ratio (4.5 L water / 50 lb cement, or 900 mL water per lb of cement). I did some small-scale experimentation with additional ratios and found that 105 mL/ lb (that is 5.25 L for the entire 50 lb bag) gave me much better work-ability without sacrificing the structural integrity of the mixture. Hopefully that saves someone else the trouble I went through. After working with the mixing ratio, I was much happier with the outcome. I am still very disappointed that the recommended ratio results in such a thick product, though. For those reasons, I will revise my rating to 3 stars.
Date published: 2016-11-16
Rated 5 out of 5 by from Mixes easy but follow the instructions on drill speed at 650 and 3-5 mins. I noticed a slower dri... Mixes easy but follow the instructions on drill speed at 650 and 3-5 mins. I noticed a slower drill speed and/or less mixing created small rock type lumps. You need to wash buckets between mixes to keep lumps down. The 5 quart water mix is stiff if aggregate is used and 5.5 did much better to make it flow. Overall it did a good job I continue to use the product because it's works. It maintained a fluid flow for about 2 minutes after put on the floor and semi self leveled with a squeegee used to help it after that.
Date published: 2017-01-15
Rated 5 out of 5 by from Great product. In our remodeling project we got few bumpy areas on concrete pad surface which we needed to level for new flooring. I purchased this product among others, because it it can be used for both, thin and thicker layers of leveler. According to instructions on pic.1-3, first we vacuumed all area, then we applied the primer recomanded by Home Depot associate. After primer dried, we mixed the concrete leveler in the bucket with the help of mixer mounted on drill. We poured mix over the bumpy surface and since we needed level few smaller areas we spread the leveler with finishing trowel. On deeper places we used roller with pins in the order to get possible air bubbles out. The leveler mix starts getting thicker immediately after mix is poured, thus make sure, that everything is ready to work with the mix right the way. The mix needs to be helped to spread and roughly leveled, the fine smoothing and leveling is provided by mix itself. It's a great product and great help where needed. It's safer for environment-releases less CO2 then cement. Info on the bag: State of California Proposition 65 Warning. Please, refer to the SDS and www.CTScement.com for additional safety information regarding this material.
Date published: 2016-04-23
Rated 1 out of 5 by from Improper mixing ratio recommended Very dissatisfied with this product. I mixed in 4.5 liters of water using a graduated beaker and stirred the mixture for 3.5 minutes with a mechanical mixer. looked fluid and uniform in the mixing bucket. However, when I poured it I quickly realized the mixture was too thick. The product did NOT self-level. I would not recommend this product, but if you do use it, be wary of the recommended mixing ratios. If possible, test the consistency of a small sample mixture before making an entire batch.
Date published: 2016-11-07
Rated 5 out of 5 by from Works Great - don't worry about mixing! So I read the other reviews that were written that say it is "far too thick to pour" and 5qts is not enough water. Let me tell you, 5 qts is PLENTY of water. There is only 2 possible ways that you can mess up the mixing: 1) you are not measuring correctly. Are you confusing pints and quarts? cups and quarts? or 2) you tried to pour the water into the powder. I actually found that 5qts was too MUCH water and caused my mix to be a little too runny. But the instructions do say 4-5qts, so I found after a few bags that about 4.25 quarts achieved the consistency I desired. Seriously, at 5 qts of water, you could mix it up pretty well with just your arm and a paint stir stick. (don't really do this, I'm just pointing out that those previous reviewers really screwed something up if 5qts was not enough water for them). My only negative is that this stuff is EXPENSIVE at $32/bag. But it works great and did what I needed, so I'll probably use it again if I have to.
Date published: 2016-06-26
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