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Custom Building Products SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
0010186771595

Custom Building Products

SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar

  • Ready to use, no mixing, no mess
  • Just spread and set
  • Alternative to traditional thin-set mortars
$52.47 /each

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Product Overview

SimpleSet is a no-mix, no-mess alternative to traditional thin-set mortars. Recommended to bond porcelain, marble, granite, stone, ceramic, mosaic and quarry tile up to 8 in. x 8 in. for interior use only. Can be used with tile up to 18 in. x 18 in., but dry time significantly increases. Dry time will be extended if using larger tiles, bonding to non-porous surface, in high humidity or if temperature is below 60 Degree F.

California residents: see   Proposition 65 information

  • Ideal for smaller format tile and stone installations
  • Spreads quickly and easily with minimal mess
  • Standard dry time for 8 in. x 8 in. tile is 24-72 hours before applying grout
  • Premixed and ready to use
  • Do not apply excess adhesive when installing

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Customer Questions & Answers

10 Questions26 Answers

Customer Questions & Answers

SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar

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4 answers

Do I have to use the whole bucket all at once, or can I use some, close the bucket, and use the rest a few days later?

This question is from SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
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April 26, 2016
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Asked by
Stockton, ca
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September 27, 2016
Answer: 
No you do not have to use it all at one time. You can close the bucket for use another day
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April 28, 2016
Answer: 
SimpleSet Pre-Mixed Thin-Set Mortar will remain re-usable in the container for approximately 18 months from the date of manufacture. For further assistance please contact our installation division at 800.272.8786 option 2
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Asked by
Pittsburgh, PA
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Home Improvement Profile: Professional
April 28, 2016
Answer: 
I've used part of the bucket, closed it properly, and only used the rest as much as 18 months later. Mastic products like these are made for convenience. That's why we deal with the downsides.
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Asked by
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April 27, 2016
Answer: 
You can use it as needed. It's premix, so it will keep for a relatively long time in a closed bucket.
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3 answers

Mortar or Mastic?

This question is from SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
Asked by
Denver, CO
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May 24, 2016
I'm confused. The label says premixed thinset mortar, but numerous answers to various questions call it mastic, which would mean that it's an adhesive and NOT a concrete-based mortar. Which is it?
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Asked by
Oak Creek, WI
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May 26, 2016
Answer: 
Mastic is an organic glue type of material and probably will not last as long as mortar Also it's not so good in wet/humid locations because it's organic and will break-down in time. If you are looking for something to use, say in a bathroom, use thin set mortar. Mortar will outlast mastic in any use. Mastic is definetly easier than using mortar but not in the long run.
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May 26, 2016
Answer: 
SimpleSet Pre-Mixed Thin-Set Mortar Exceeds ANSI A136.1 Type I, which is the American National standard specification for organic adhesives for installation of ceramic tile. For further assistance please contact our installation division at 800.272.8786 option 2
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Asked by
Pittsburgh, PA
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May 26, 2016
Answer: 
Hi, Barry. I'm glad to answer this one. Real thinset mortar is a cement-based product: you have to add water to a dry powder. Only some of the water evaporates as the product hardens: most of the water is broken up into hydrogen and oxygen molecules and, during the course of the reaction, bonds with the molecules of different compounds in the powder to form new molecules. In other words, real mortar Read More
Hi, Barry. I'm glad to answer this one. Real thinset mortar is a cement-based product: you have to add water to a dry powder. Only some of the water evaporates as the product hardens: most of the water is broken up into hydrogen and oxygen molecules and, during the course of the reaction, bonds with the molecules of different compounds in the powder to form new molecules. In other words, real mortar hardens because of a chemical reaction.
I'd say the consistency of mortar can best be described as smooth peanut butter...with some sand added in. I know that's a weird thought, but please bear with me.
Mastic is a sticky tile glue developed as a convenience product. It is approximately the consistency of regular creamy peanut butter (no sand). It hardens as it dries, like most glues.
This product, marketed as "pre-mixed thin-set mortar" is a tile mastic that mimics the consistency of mortar. On other words, it's like mastic with some sand added in, and that's how many experienced installers would describe it. Many of us look down on this product as a trick or cheat, designed to take money out of the pocket of the unsuspecting DIYer who has been told s/he needs thinset mortar, but wants a product that can be used more conveniently than the powder in a bag. You will notice that the term "mastic" never appears anywhere on the packaging of this item or in its online literature. But that's what it is, tile mastic with some gritty particles added in to mimic the consistency of real mortar.
All the same, there are legitimate professional uses for this product. The sand in the mastic makes a slightly thicker base of it easier to install. This is important in situations where walls haven't been leveled properly before tiling. This stuff, judiciously applied, can save the day in those situations. I'm sure the manufacturer can think of others. I believe I read somewhere that the gritty particles in this aren't actually sand, but a crystalline drying agent that allows the mastic in the rest of the product to dry more thoroughly than in non-gritty mastic.
But the fact remains that tile mastic was originally designed as a convenience product. This stuff is tile mastic, and I feel its use should be clearly limited to decorative wall tiling in areas that are not exposed to liquid flowing over them. It should not be expected to bear significant weight, or withstand extreme heat. I would not use this for any floor installations, countertop installations, tub surround installations, shower walls, any exterior applications, or fireplace installations. This is just my professional opinion, of course. Others use it for a number of these things and have rarely had problems with it. But in all those cases, I use real thinset mortar that you have to mix out of a bag, and not this.
The last thing I can barely believe is that this stuff is now sold in gray and white color varieties, just like real mortar. The reason there are two colors of mortar is that there are two colors of cement, and the white stuff is more expensive to produce than the gray stuff. I can't believe that Custom Building Products, a very reputable tilesetting company owned by Quikrete, would go to such lengths to trick their inexperienced DIY (most vulnerable) customers into believing this is any sort of real mortar and paying a heavy premium for it, but they apparently have. Read Less
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3 answers

Can I use this pre-mixed thinset to tape the hardibacker seams? (floor tile installation)

This question is from SimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
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April 26, 2016
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Asked by
Fairfax, VA
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June 7, 2016
Answer: 
YES, APPLY WITH 3" PUTTY KNIFE AND SMOOTH WITH WET TILE SPONGE
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April 28, 2016
Answer: 
Please confirm with HardiBacker that this method of installation complies with their systems warranty. Typically it is recommended to tape cement backer board seams with a polymer-modified thin-set mortar. For further assistance please contact our installation division at 800.272.8786 option 2
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Asked by
Pittsburgh, PA
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April 28, 2016
Answer: 
I just answered this over in the 1-gallon section. This stuff shouldn't be used to tape the seams in cement board. They should be taped with modified thinset mortar like Versabond, real cement-based thinset mortar that you mix out of a bag. Unfortunately, and I realize that this is why you're probably asking the question, even the Hardiebacker installation guide doesn't make that as clear as it should.
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3 answers

Can this thin-set mortar be used for tiling the shower wall?

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West Hartford, CT
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September 6, 2015
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Asked by
Fairfax, VA
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June 7, 2016
Answer: 
YES, DON'T RECOMMEND FOR SHOWER FOOOR
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September 9, 2015
Answer: 
Yes, the thin-set mortar is sufficient enough tot ile a shower wall.
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Asked by
Pittsburgh, PA
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September 8, 2015
Answer: 
No, not realistically. You need to mix the mortar that comes in a bag for installing tile in a shower.
Good luck!
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Customer Reviews

Rated 3.0 out of 5 by 58 reviewers.
Rated 5.0 out of 5.0 by Good product and easy to use We did a curved desk in business and needed mastic for glass tile. This worked well for our needs product. October 25, 2016
Rated 3.0 out of 5.0 by Just stick with the tried and true versabond mortar This is another product that works, but it would not be my first choice. Id recommend stick to the versabond, unless you just do not have the means to mix your own mortar. One thing that is not immediately clear with this thin-set. Is that it is for smaller tiles no bigger than 8x8. If you use it with larger tiles like a 12x12. It will work, but you will find it takes forever to dry. Use it with an 18x18 tile and you will probably be waiting a week for this stuff to completely dry. I made this mistake in my washroom and had to wait 3 days for the tile to dry. This thin set does not go very far either. You will find yourself spending three times as much on mortar than you would if you had just used versa bond and mixed it yourself. The only place Id ever recommend using this stuff is if you have a small project using small 8x8 or smaller tiles and you dont have the means to mix the mortar yourself. Maybe for something like tiling a countertop or doing a back splash, but honestly I would try and just stick to the more tried and true versabond. I took off 1 star because this stuff lacks versatility and it costs almost 4 times as much as 50 pound bag of versabond which goes further. I took off another star because the manufacturer should make it more clear that this stuff is really meant to be used with tiles 8x8 or smaller. It is written on the container, but it is very small and you have to really be looking for it to find it. I guarantee 75% of people looking at the pre-mixed mortar for convenience will not see that this stuff is meant for smaller tiles until it is to late. September 27, 2016
Rated 1.0 out of 5.0 by WORST PRODUCT EVER!!! Do not use this product at all!!! Take the time an get versabond. I tiled a basement floor and after 3 days it was just as wet as when I layed it. I had to peal up each tile and wash everything. Such a mess and a wast if time. August 23, 2016
Rated 5.0 out of 5.0 by Easy to Work With SimpleSet is such an easy product to work with. I have used it for many tile jobs, the latest being a tub/shower tile job....while there are a number of steps to this type of project, you can eliminate the messy job of mixing thinset. Just open the bucket and its ready to go and the right consistency to spread easily for great tile adheasion to backer board. One bucket was plenty for a compete tub shower surround that I took all the way to the celing (note there was a small slider window that reduced the sq. footage) The product is easy to clean up too! August 16, 2016
Rated 2.0 out of 5.0 by Had a rough time getting it to stick to anything. I've used premixed thin-set before, but never this brand. At first, I thought it was something up with my paint, but then I couldn't even get it to stick to the tiles. A lot of the thin-set was wasted falling to the floor. June 28, 2016
Rated 5.0 out of 5.0 by This thing really works Well, the bucket says that it covers a specific square footage but it's not right especially if you're butter spreading the back of your tiles. But aside from that it's an awesome product. June 21, 2016
Rated 5.0 out of 5.0 by Works great! This is the best thin-set mortar I have ever used. It spreads easily, smoothly and securely locks the backer board and tile into place. Another good thing is you do not have to keep putting the lid on the bucket during installation because it does not dry out quickly. The mortar was completely dry in 24 hours and I was able to put grout in the tile. I prefer pre-mixed over they kind you have to mix yourself because it ends up saving me and extra hour of work during an 8 hour day. I just completed my 12th tile job and this is the best out of everything I've tried. Tile I laid 2+ years ago is still in place. I highly recommend this product for floors, counter tops and showers/tubs. September 16, 2014
Rated 3.0 out of 5.0 by COST TO MUCH GOOD PRODUCT , BUT HOME DEPOT HAS RAISED PRICE FROM $39 TO $52 IN FIVE I'VE BEEN USING PRODUCT FOR NO APPARENT REASON June 7, 2016
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