Internet #100678075

Model #STTSW1

Store SKU #769803

Store SO SKU #1000406816

SimpleSet White 1 Gal. Pre-Mixed Thin-Set Mortar

  • Ready to use, no mixing, no mess
  • Just spread and set
  • Alternative to traditional thin-set mortars
  • See More Details

Frequently Bought Together


Product Overview

Premixed and ready to use


No hassle of adding water and mixing.

Simple Solutions Pails

Simple Solutions

A complete system for easy tile installations.

no mess alternative

No Mess

An easy alternative to traditional powdered products.

SimplePrep spread on install surface with trowel


Repairs holes and cracks in concrete and plywood floors prior to installing tile.

SimpleSet spread with trowel


Replaces traditional powdered thinset mortars.

SimpleGrout spread with grout float


Spreads quickly and easily.

SimpleFix spread with float


Great for repairs and small projects.

Easy to spread and clean

Easy to Use

Easy to spread and clean

white and gray

White and Gray

SimpleSet comes in both white and gray

grout joint

For Various Joints

SimpleGrout is for joints 1/16 in. up to 1/2 in.

tile size up to 15" long

Small or Medium Tile

For tile with any side up to 15 in. long

Inside only

Indoors Only

Interior use only

dry or intermittently wet area

Use in Dry or Damp Areas

For dry area or intermittently wet areas such as tub surrounds and shower walls

SimpleSet pre-mixed thin-set mortar is a no-mix, no-mess alternative to traditional thin-set mortars . Recommended to bond porcelain, stone, marble, granite and ceramic or porcelain tile up to 8 in. x 8 in. (20 x 20 cm). Can be used with tile with one side up to 15 in. (38 cm), but dry time significantly increases. Call Technical Services at 800-272-8786 for more information. For interior wall and floor installations. Use white SimpleSet when installing lighter-color stone and tile. Exceeds ANSI A136.1 Type I
  • California residents
  • Spreads quickly and easily
  • Ready to use
  • No mixing, no mess
  • Just spread and set
  • For interior dry areas
  • Suitable for some wet areas such as tub surrounds and shower walls

Info & Guides

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Compare Similar Tile Mortar

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SimpleSet White 1 Gal. Pre-Mixed Thin-Set Mortar
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BrandCustom Building ProductsCustom Building ProductsCustom Building ProductsCustom Building Products
NameSimpleSet White 1 Gal. Pre-Mixed Thin-Set MortarNatural Stone and Large Tile 50 lb. White Premium MortarFlexBond 50 lb. White Crack Prevention MortarSimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
Product typeThin-set mortarLarge format tile mortarMortarThin-set mortar
Flooring Material FeaturesNo mixing required,PremixedNo Additional FeaturesCrack resistant,Moisture resistantNo mixing required,Premixed
LocationBathroom,Countertop,Floor,Interior wall,Kitchen Backsplash,Tub surroundCountertop,Exterior wall,Floor,Interior wall,Shower,Swimming pool,Tub surroundFloor,Interior wallBathroom,Countertop,Floor,Interior wall,Kitchen Backsplash,Tub surround
Maximum coverage area (sq. ft.)44100100154
Flooring Product TypePremixed Thin-Set MortarFlooring Powder MortarFlooring Powder MortarPremixed Thin-Set Mortar
View ProductView ProductView ProductView Product



Maximum coverage area (sq. ft.)
Product Width (in.)


Additive required
Adhesive Type
Tile & Stone
Color Family
Commercial / Residential
Commercial / Residential
Dry time (hours)
Floor/wall use
Floor and wall
Flooring Material Features
No mixing required,Premixed
Flooring Product Type
Premixed Thin-Set Mortar
Flooring Type
Bathroom,Countertop,Floor,Interior wall,Kitchen Backsplash,Tub surround
Product type
Thin-set mortar
Product type
Premixed mortar
Product Weight (lb.)
Use with

Warranty / Certifications

Manufacturer Warranty
1 Year Product

Questions & Answers


Is it supposed to be so dry (like cookie dough consistency? It doesn’t spread easy and chunks fall off.

Asked by AjAO123 March 13, 2019

I have used this product on a couple of different projects and every time I use it, it falls off for me too. I am applying tile on a wall, which makes it even more challenging! I tolerate it because I feel it's easier than mixing up mortar but after this last project, I may just get a mixer and use the powdered product.

Can i use this stuff to install my mosaic kitchen backsplash.

Asked by Vinnie May 28, 2016

as always, read instructions on label. And ask your Home Depot tile person if this product will work on the "mosaic" tile that you choose. Size ,color and shape can make a difference in the mortar you use.

Is it good to use this to tape cement board

Asked by KB123 April 26, 2016

This is what I used for smoothing a previous (sloppy) job. For the taped section, I moistened it very slightly and it worked fine. I only wish I had a "before" pix. Dries well, little to no cracking on thick spots.

Can I used this product to set my glass tiles on my backsplash...

Asked by Frank April 26, 2018

Yes. And much easier than mixing your own. Just be careful how long you leave the bucket open so it doesn't dry out.

will this mortar cover 36 by 36 inch square cement board

Asked by fred February 4, 2019


Can I use this to set a 13" by 5' stone mantle on a fireplace? I need to level the mantle out whi...

Asked by David January 15, 2021

We do not recommend SimpleSet Pre-Mixed Thin-Set Mortar when setting 13" x 5' stone. For further assistance please contact us at 1 800 282 8786 option 2.

what would be the thinnest layer that would hold with no problems?

Asked by RC April 11, 2017

I used a square notched trowel with 1/4" notches which up till now has worked for me both on the wall and setting floor tile. It floats large tile nicely and has been holding well.

Can this product be used to tile a shower pad or shower floor?

Asked by Aemorrisonsr November 26, 2019

Yes, I used it in a shower laying tile onto the Schluter Kerdi system. It worked great.

Is this thin-set a latex based product

Asked by Sharbear June 12, 2019

No this product is not a latex based product. The safety data sheet for this product shows that it contains: Crystalline Silica, Quartz,Calcium Carbonate,Ethylene Glycol, and Stoddard Solvent. Its solubility in water is MISCIBLE.

Will ot work on a shower pan with stone pebbles?

Asked by Nocknarrow July 28, 2018

Yes. That's what I used it for.

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

Customer Reviews

  • 409 Customer Reviews
  • 3.9 out of 5 stars overall
62% of customers recommended.
Overall Ratings
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Never dried! Nightmare!
I bought this thinset for my 12x12 ceramic floor tiles, applied as instructed. On the second day I noticed the tiles would still flex and lifting them, I found the mortar was still wet. I placed a fan and dehumidifier on the hallway where the tiles were set. They were placed on wonderboard which sat on wood subfloor. After a full week, the premix did not set, was still as wet as the day I put it down! I had to strip it all off and go with normal mortar. This was a waste of two weekends and over 100 dollars! I'll be calling the manufacturer to try and get a refund. I'm never buying this junk again! Note that in the photo we used the grey premix mortar and the when that ran out we switched to the white. Both did not cure at all!
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This mortar didn't seem to be mixed very smoothly. Took a lot of work keeping it from falling off...
This mortar didn't seem to be mixed very smoothly. Took a lot of work keeping it from falling off of the trial but ot does look good in the end. I would still recommend. I'm new to DIY
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It is nice that it is premixed but had to end up buying 3 buckets it doesn't go very far. It is o...
It is nice that it is premixed but had to end up buying 3 buckets it doesn't go very far. It is only for small jobs in the gallon bucket.
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Worked Great For Me
Im not sure what exactly all the complaints are about, I used 1.5 buckets of these 3 1/2 gallon premixed thin-set to build a 4x15 ft ledger stone wall in my den rennovation. It couldnt have been any easier and my wall is rock solid (no pun intended. I removed drywall and added cement backerboard, and the whole thing was a breeze. Only complaint is that it is pricey compared to the powder thin-set/mortar, but if you dont want to have to mess around with mixing and trying to get the proper consistency (especially someone who doesnt work in masonary,) then its worth the few extra bucks in my opinion.
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This worked great on my small project of tiling the...
This worked great on my small project of tiling the stair risers on my entry steps. Convenient and easy. Looked great when completed.
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This is the worst thin set mortar I ever used.
Quality :
Value :
I used to for small floor tiles in my bathroom and wall tiles. Installed the tiles following directions, let it set and checked them after a few days of drying. ALL THE MORTAR WAS STILL WET! I had to pull up all the tiles and redo it with a Mapei thin set which worked like a charm. I will be returning this garbage and contacting the manufacturer for a full refund.
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Product is very easy to use and this size is perfect for small areas to be tiled. Read direction...
Product is very easy to use and this size is perfect for small areas to be tiled. Read directions, watch some videos on installation and it will go very smoothly. Tip - not to put too much down as to making the thin set seep out between the tiles, as this is what grout is for. The thin set is to be like a peanut butter like glue thickness to set the tile.
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Used on Grouting for my Fireplace!
Mortar washed just the surrounding bricks within the grout lines and it worked like a charm! Highly recommend. It dries fast too!
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This thin-set was easy to use and stayed usable, with the lid back on tight, for several applicat...
This thin-set was easy to use and stayed usable, with the lid back on tight, for several applications. It was perfect for a social distancing art project, using old chimney pipe and beach glass.
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I am only giving this review 4-stars due to being unsure of long-term results. This reflects appl...
I am only giving this review 4-stars due to being unsure of long-term results. This reflects application up to the point of grouting only. Please know, I have a construction background, but have not specifically laid tile myself, this is the first time doing so. This product was suggested to me by a HD employee in the tile department at the time of purchase (I did little research on tile adhesion products prior to shopping and was just looking for something less messy then mixing from a cement bag product. This product seemed far simpler (however very pricey) over its messy counterpart of cement based bag mortar. I am not a contractor, just a DIY'er doing his own project in his home, and striving to do the best job possible with what knowledge I've acquired, online as well as Youtube. I only came to research these reviews on HB site to see what I could glean for more specific dry times for 24"x6" wood-look ceramic tiles using this SimpleSet product. Seems Custom Building Products does not give specific charted dry times for different sized LFT applications, only giving limited advice about "larger tiles", stating that dry times may be considerably more for larger tile sizes (no specifics at all based on a tile's actual size, very vague actually). 24" tiles are indeed much longer then the width, but one should consider they are 6" wide, and should have adequate drying space as would a simpler "6x6" tile (?), ...or could I be wrong? Anyway this is why I am here now. I just used this product on my log cabin project and had zero issues. As a matter of fact the only complaint I would have is the mortar starts to dry very quickly, and I would not dare to apply more than 2 tiles at a time before washing my trowel tools off completely as well (if allowed further time it is near impossible to clean this stuff off your tools). Yes I am new and slower then most professionals, ....but my point is this product performed great for me. These tiles set within a few hours and would not budge, not even fractionally after being walked on. I simply do not understand the poor reviews. After allowing overnight setting I can walk safely over the tiles with no issue whatsoever, ....and no way are you prying these tiles off - they are not going anywhere (I just tried an attempt to do so but they are solid and firm). And since I have no adequate information about how long I should actually allow for dry time, I am giving it an allotted 72 hours from the last row I placed. This mortar is already well set, so giving it that 72 hours seems safe enough from my experiences with my own project. I will say (that others have not disclosed) is that I used James Hardi Backer Board as an underlayment and securely fastened to my subfloor with Versabond cement thinset, along with screws. I properly taped the seams and patched them in as instructed. The SimpleSet mastic seems to near instantly dry against this cement board product, and after tile application needs to be scraped and cleared-off around the edges immediately (or its very difficult to remove). Regardless, my tiles have secured quite nicely. I am very confused now with reading all these negative reviews. I do live in Great Falls MT in a dryer climate (though not high desert), and use an air conditioner, which may contribute to my success, but after reading these reviews I think I give more credit to the use of cement backer board - just my newb-level opinion, whatever that might be worth. See the tiny kitchen photo below revealing half of my tile project complete (ready now to applying the grout). I will be doing so today with very little concern at this point for whether the mastic has dried - these tiles are not going anywhere anytime soon. So far I am very happy with my progress, and also this project. Would I push hard to recommend it - not really, only because of the other poor reviews, but unfortunately for the masses this particular project seems to be one of few that has gone well without complaint. If for any reason I have issue, I will be sure to update this review.
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