Customer Reviews for Rapid Set 55 lbs. High-Performance, Fast-Setting Mortar Mix

Great product, but dries very quickly. We didn’t tap the sides of the frame right after pouring in some spots and that created some honeycombing on the island. Didn’t make the same mistake of the second countertop though and turned out great!

I used this mix to cast concrete countertops. I did not use any reinforcement and even cast one piece 8 feet long with a sink hole without a single failure.

I used it to build a rock wall under a waterfall I built.

This product works great for counter tops or table tops.

I bought this to parge the side of a concrete wall because it is advertised as a good application for this product. As soon as I opened the bag I could see gravel/pea stones up to 3/4" all through the mix. I went through half the bag to see how bad it was and the gravel was all through the mix. I tried to sift the gravel out but there were way too many and the sand grit was course and larger. Repair mortar should have fine plaster sand to be used for tuck pointing or plastering, not this stuff. TERRIBLE product. Lost a day of work dealing with this trash. Checked another bag at the store during the return. Same garbage. HD doesn't sell stucco or parge mix in our area. Unless you custom mix your own, use Quikrete Type S mortar mix over bonding slurry. Much finer sand and no gravel. Quikrete Repair Mortar with polymer was actually better, but it only comes in caulk tubes now, what a shame. Sadly, this is what "Made In America" has become. No pride in your work. HD did accept the return with no problem.

When I'm leveling up an Industrial machine up on shims and have it bolted onto the Floor, this is what I use to fill in gaps under and around. In the one picture, you can see a little blue. That's from being run into by a CHEP Blue Pallet. It didn't break YET. I had just fixed it as they broke it up about half of that. People like to run into things. This is the second time I've had to fix that one. To get a smooth look, you wet your Metal 3-4" wide knife. Puddy knife or drywall knife. Dip in water and run across. If you want more of a ruff look with the small bits of rock, you and wipe and dap with a sponge. Mine is the smooth look in the picture. The less water you use, the stronger it's going to be. It has to be wet and mixed wet good, but it can't be thin and runny. Just enough so it's all wet, and there is no dry mix left. A little water goes a long way. It is Rapid Set and so you have to use it pretty quickly before it starts drying. Then it's to hard to work with. So you can only do small sections at a time. In my case, mix enough for 1 or 2 Legs. You have maybe 15 minutes to work!!!

I used rapid Set Mortar Mix to make 3" thick step treads. Each tread was 4.5 bags of Rapid Set Mortar Mix. I used the Rapid Set Flow control and Set Control for a perfect consistency and to give more time before it set up. The result was very few voids.

This is a excellent material to use for our stomwater system work. It will stick to concrete and brick and stay in place. Although the cost for the material is higher, your wait time to setup and cost for labor time decreases then the regular, cheaper mortar mix.

Using this to fix cracked and missing mortar on my basement wall project. Once the surface is prepared Rapid set Mortar worked great to repair small cracks to large areas of missing mortar. It dries fast and is very strong. It grips great and have walls I did over 2 years ago and not 1 crack has developed . Highly recommended product

This mortar is what I chose to use to make these concrete countertops. I had to work quickly and in an organized manner. Inverted casting was the best method.

Worked well to hold stone on an outside wall of a friend's home. The stone is thick and heavy, this completed the look the home owner was going for.

We are a painting company here in Jacksonville, FL. We do lots of painting and stucco repairs. This product works great for all sorts of waterproofing and stucco repairs. See more pics @ https://www.procolorpaintingllc.com/jacksonville-waterproofing.html

Used the mortar to build a stone wall . Attached the mortar to concrete cinder blocks and then attached field stones to the wall and mortar . Used a common trowel bought at Home Depot to work the mortar into cracks . Bought from Home Depot a mixer and an orange pail Mixed small portion at a time as the rocks need to set before adding more stones . The set up time was quick. Was very happy with the product

The Mortar Mix added a nice finishing touch to my DIY project.

Works great on styrofoam

Perfect for spalling repair. Tried different products and this is the best. Easiest to use, quick setting, no voids, and creates great repairs.

I used 2 bags no reinforcement and 1 bag of charcoal coloring. Turned out really solid and looks great for a hearth.

Outstanding product... worked perfectly for constructing my concrete countertop.

A co-worker mentioned to check out Michael Builds on YouTube for making concrete countertops. It looked too good to be true, but wow I made my first countertop this weekend and it worked great. Everyone that is making concrete countertops should look into using this. Add the flow control and it pours like pancake mix. I am going to have a pretty sweet looking bar when this project is done. I still need to install the first one in the bar. Will update images once I get the other 2 made and get them installed.

I made concrete countertops with this product. They are beautiful and very sturdy! It is heavy, so make sure you have plenty of help.

Excellent product. I usually mix it with scratch and brown on small patches to accelerate the process so that I can do the stucco finish coat within minutes.

I read thru a couple of glowing reviews on this product, but I did not have a good experience with it. I read in the product description it sets up in 15 minutes; in my case I would say two to three minutes. I mixed up a small batch in a little bread pan & could only use about a third of it before it set up to a point it was unworkable. The consistency out of the box was very gritty, more like small gravel. I wouldn't call it mortar! Possibly this box was sitting on the shelf for years & absorbed moisture ??????

I used this grout for my outside kitchen countertops. First time using it. I'm pleased with the outcome.

Strong very fast setting

I used this rapid set mortar mix to make a concrete bar top.. I had a bid for almost $2,000 for just one large bar top, and that just wasn't in my budget... So, I ended up online, doing research, and found I could make my own bar top, back bar top, and counter top for a sink at a HUGE SAVINGS using Rapid Set Mortar Mix (and flow control)

Whether in a solid semi solid or liquid state do not turn your back on this material 15 min to dry is an understatement it cleary dries faster than that it does the job.

Being kind of sloppy and impatient Rapid Set mortar mix fits my work style. I used the mortar to repair the sides and sill of a basement window. It hardens quickly and I was able to put in a new 70 lb glass block window about 1 hour after fixing the old basement window sill. Yes it costs more but I didn't have to wait an extra day to finish the project. Yes I would use this mortar mix again.

I work here and there and this product makes my life easier and I enjoy working it!!

I recently used Rapidset while making a hearth and it works fantastic, and looks awesome, plus it is super strong...I highly recommend Rapidset products for all your concrete needs

Before I go into my experience with this product, I’m going to suggest that if you haven’t worked with something like this before (as was my case) you go watch a video like the one I’m going to link to, just so you have an idea of what the consistency of the mortar mix should look like for your desired application. There’s lots of links out there, but the one I found (and reference below) was done by a representative of RapidSet: So, as you can see from the pictures, I had a couple of holes in my basement: a small one at the juncture of 2 walls and the floor, and another where the wall, floor, and stairs meet. You can’t tell from the pics, but the larger hole also extended a little under the bottom stair. The mortar mix was pretty easy to work with. Obviously i used goggles and a face mask, to avoid getting the dust in eyes or mouth. And the drill mixer was key, especially as the mix got thicker. I initially started to try and measure based on the water:mix formula on the bag, but realized that the consistency was more important, so i just added more mix until it looked and felt right (going by what the video showed). And working with the mixed product was no chore. I double-gloved with nitrile gloves, hand scooped it into the holes and packed it in, then smoothed it with a small trowel. Since it’s a basement that doesn’t look so spiffy otherwise, i wasn’t too worried about a finished look, hence the slightly rough look in the “finished” picture”. Also, the after pic was taken about 24 hours after the “after” picture. I know there’s some part of that that looks still damp, but its not. The whole thing is rock hard and dry. Also, the Installation Guide and Specification docs that are available on the product overview tab for this product are much easier to read over than trying to read the back of a 55# bag of mortar :-) If you’re someone like me that is not intimately familiar working with this stuff, a thorough read of the spec sheet was key. So, yeah, all in all a good experience.