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Custom Building Products

Model # CBTSG50

Internet # 100166653

Store SKU # 610003

CustomBlend Gray 50 lb. Standard Thin-Set Mortar

This item has been discontinued.
The Home Depot no longer carries this specific product.

$6.97 /each
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Model # CBTSG50

Internet # 100166653

Store SKU # 610003

Custom Building Products CustomBlend 50 lb. Standard Thin-Set Mortar offers economy with good bond strength for most tile projects and is recommended for floor installations. Good for setting Saltillo and other similar clay pavers. Offers good working time to apply and adjust tiles.

California residents: see  Proposition 65 information

  • For floor installations, basic tile jobs and to set saltillo or clay pavers
  • Dries in 24 hours for good working time
  • Covers up to 100 sq. ft.
  • Mix with Acrylic Mortar Admix (not included) for best results or when setting dense tile and over EGP plywood, existing flooring and for exterior applications
  • Meets ANSI A118.1 without additives and meets ANSI A118.4 and A118.11 when mixed with Acrylic Mortar Admix

Info & Guides

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Maximum coverage area (sq. ft.) 
Product Width (in.) 
Additive required 
Water/latex admixture 
Color Family 
Commercial / Residential 
Commercial / Residential 
Dry time (hours) 
Floor/wall use 
Floor and wall 
Flooring Product Type 
Ceramic Floor/Wall Tile 
Mold and mildew resistant 
Product Weight (lb.) 
50 lb 
Product type 
Warranty / Certifications
Manufacturer Warranty 
1 year product 


Rated 3.7 out of 5 by 20 reviewers.
Rated 5.0 out of 5.0 by Great product! Use both parts. Those who are having issues with adhesion should be using both parts of this. Don't be cheap, or you'll get what you pay for. I use this product, with thinset mortar admix, I cut it with water as well, but not too much, and lay my tile. This product works very well with uneven natural slate as well as other materials. I lay directly to concrete or backer. Again, don't be cheap. You get what you pay for. So to those complaining about adhesion, it's cause they were cheap. Do it right the first time. I'm not saying this is the end all be all, but if you want a solid set, especially with uneven product, this is it. I do coat the back of the tile as well. Use a good notched trowel, be patient, you'll have a great finished product. Also, I use gray mortar with white grout, it doesn't make a big difference if your spaces are deep and you're not heaving excess mortar on floor. November 12, 2014
Rated 1.0 out of 5.0 by Look elsewhere if this is for a Schluter project that requires unmodified thinset First of all, I am not commenting on the quality of this when used with an admixture. ONLY when using it as-is, which is what you should be doing with certain projects involving certain Schluter products. I really can't believe this is all Home Depot carries. If you're doing a Schluter project that requires unmodified thinset (without admixture) look elsewhere. This is a low-quality thinset for such projects. Find yourself some Laticrete 317, Megabond, Pro-Spec PermaSet, TEC Full Set Plus, or Schluter's own Ditra Set. If someone from Home Depot sees this, please get one of these other brands! August 11, 2015
Rated 4.0 out of 5.0 by Good Product with Ditra Used to install Ditra and Porcelain Tile on concrete as per Schluter-Ditra Installation Handbook 2014. Works great! Meets ANSI A118.1 which is what the Handbook calls for (Page 13). The bag states to mix with 6 quarts of water if not using the additive (the additive actually changes the spec to ANSI A118.4). 6 quarts of water is fine for laying the tile; it is not for the Ditra. Schluter Ditra requires the unmodified thin set to be "mixed to a fairly fluid consistency, but still able to hold a notch (page 24 of Handbook)" This is important! On a humid day it will take 6 1/4 quarts of water. If you do not mix it this way, you will never be able to get it to stick to the back of the Ditra (fleece webbing). September 11, 2014
Rated 4.0 out of 5.0 by It works! I never write reviews but I read so much hate on this product and I agonized over whether or not to use it, I wanted to give my opinion for others in the same boat. I need unmodified thin set to install Ditra underlayment and then to set my travertine on top of it. I found 2 websites saying this was the worst unmodified thin set to use but I had no choice... this is all I had access to without special ordering something. Everything went great! In fact I've completed both a small bath floor (36 sq. ft.) and a basement floor (400 sq. ft.) with stuff and no problems at all. September 16, 2014
Rated 5.0 out of 5.0 by So Far So Good I used this product to install a new porcelain floor in the bathroom. I did it myself with no experience except assisting my sister with her flooring once. The tiles adhered just fine using this thin-set mortar, which is recommended for various under-surfaces. Mines was concrete because I removed the linoleum. The new flooring is GREAT. I absolutely LOVE it. November 7, 2013
Rated 4.0 out of 5.0 by Gets job done Used this to install porcelain tile on basement floor and in custom shower. Followed mixing directions and had no problems. Applied thin set to floor and walls as opposed to back of tiles. Clean up between tiles was messy. May have been easier if just applying thin set to back of tiles. June 4, 2015
Rated 5.0 out of 5.0 by Works as advertised. Know your purpose. Thin set/mortar comes in different qualities. Know what your purpose is. Use the right product. I saw the review rating this poorly and had to counter. Complaining that this product, probably using no admixture on top of that, would not stick his new tile on top of other tile? Really? That is NOT what this stuff is for. If you use this for what it is for, it will work as advertised. If you add some latex bonding liquid, you can do a little more. Know your product and your use and this will work just fine! DO NOT think spending $6 for this to do the job of something that needs a $16 product will magically work. It won't. If you are putting tile on a rough concrete floor, on meshed floorboard/plywood, it will work fine. If you are doing tile on tile, you better use something stronger and more bonding! You might try mastic in that case. But you should rough up your base tile first if it has a smooth surface. Good luck! June 27, 2011
Rated 5.0 out of 5.0 by great on rough concrete Using this to place porcelain tile in my new sunroom over a rough concrete slab that used to be an outdoor patio, so when used as stated no problem. Actually made a mistake and had to remove some tiles placed a week ago with chisel and hammer and boy thre tiles did not want to come off. I actually removed 8 tiles. Some were with fortified medium base (needed thicker application) and some with this thin set and both were equally string. I clean the area, lightly wet floor and tile, place mortar, back butter tile and you are good to go. Would probably not use for walls, exterior as would probably need more strength, or over smooth sealed surfaces that don't allow it to properly cure/dry. For floor over concrete, simply cannot beat the price. June 25, 2014
  • 2015-08-29T11:32:00.843-05:00
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