Model # CBTSG50

Internet #100166653

Store SKU #610003

Custom Building Products CustomBlend Gray 50 lb. Standard Thinset Mortar

Custom Building Products

CustomBlend Gray 50 lb. Standard Thinset Mortar

  • Non-modified mortar
  • For installations over concrete floors
  • Mix with Thin-Set Admix Concentrate for higher bond strengths
$6.97 / each
If you buy 20 or more
$6.27 / each

Frequently Bought Together

Product Overview

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. For increased performance, use Custom Building Products' Thin-Set Admix Concentrate or Thin-Set Mortar Admix when bonding dense tiles (porcelain and glass) or setting over Exterior Grade Plywood (EGP), existing tile and for exterior applications.

California residents: see   Proposition 65 information

  • For installations over concrete floors
  • Mix with Thin-Set Admix for higher bond strengths
  • Covers up to 90 sq. ft.
  • 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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Warranty / Certifications

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Customer Questions & Answers

Can this be used applying tile against a hardibacker board as is without additive?

I already used it against hardibacker and I'm concerned if it will hold up? It seemed to adhere well.
Asked by: RJ
It will for a while. But overtime it will become brittle and break. I would go with one of the 15$ options.
Answered by: Tilefaceman
Date published: 2016-03-29

Can this be used to lay bricks?

I need to build a small brick pit on a concrete floor. will this work?
Asked by: SS
CustomBlend Standard Thin-Set Mortar is not recommended to set brick in a fire pit. For further assistance please contact our installation division at 800.272.8786 option 2
Answered by: CustomBuildingProducts
Date published: 2016-02-25

What is the pot life mixed with the admix?

Asked by: doityerself
No, this product does not contain admix.
Answered by: CommunityAnswer
Date published: 2016-12-01

Can this be used for laying natural stone indoors?

Asked by: doityerself
Yes, Natural Stone tile is a suitable tile type for CustomBlend Standard Thin-Set Mortar depending on the specific type of natural stone tile .
Answered by: CommunityAnswer
Date published: 2016-07-03
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Customer Reviews

CustomBlend Gray 50 lb. Standard Thinset Mortar is rated 3.3 out of 5 by 29.
Rated 5 out of 5 by from Female DIYer and Schluter Systems Kerdi Waterproofing membrane Remodeling a bathroom for a fella that's clueless and can't read directions. Contractors told him $15,000 for his bathroom remodel. I'm doing the entire thing for under $4,000 and that includes all new plumbing including the poo pipe, new vanity and hardware, and I had to re-stud the walls. I used Kerdi waterproofing membrane for the shower and it specifically calls for NON-MODIFIED Thin-Set Mortar. I ONLY used this mortar on the Kerdi and guess what, no issues. Grab onto the handle of the soap dish and it doesn't even budge. I wouldn't use this product on the drywall, I used Versabond for that. Read the directions and understand the application. Kerdi calls for non-modified mortar.
Date published: 2016-09-16
Rated 5 out of 5 by from Thinset Worked great had no problems. Used it to lay down some natural stone slate tiles.
Date published: 2016-10-25
Rated 1 out of 5 by from Awful. Save yourself doing the job twice and get any other option So I used this product for 3 rooms of my house last year. One I have redone, the others are on my to do list. It does not stick well to the tiles or backerboard. I did not use the admix, which it claims "for higher bond strengths". I honestly believe they should rephrase it, "for ANY bond strength use the admix". The best thing I can say about this product, is that due to its weak bond strength, it makes tearing it out very easy. Obviously because you are going to replace it later with a better product. All the rooms I redid using other products have lasted with no problems. So I have a high level of confidence that the problem was using this.
Date published: 2016-02-08
Rated 1 out of 5 by from Terrible for tile adhesion We installed tile in all three bathrooms using this thinset. We own a tile saw and have done various projects including a kitchen and bathroom for a family member. Saw this on the shelf and the Home Depot employee said it would work for our bathrooms. It was easy to mix with the drill bit and spread easily as well. Within the first year of installation, we started hearing a weird noise like scraping sand whenever we walked on the tile. Large chunks of grout began falling out. We used unsanded grout due to thin grout lines so we thought that was the issue, even though many people told us we could use unsanded on the floor. I spent hours chipping away the old grout in the half bath then grouted with sanded. Not long after the problem is back. I realized it must have been this cheap, sandy thinset. Went to the website and read reviews with the exact same issue. What a waste of time, money, and resources. I'm going to have to completely redo all three bathrooms.
Date published: 2016-04-26
Rated 4 out of 5 by from 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).
Date published: 2014-09-11
Rated 1 out of 5 by from 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!
Date published: 2015-08-11
Rated 1 out of 5 by from No Adhesion Mixed this this according to instructions, and applied to dampened backer board. However, was able to peel off Schulter Kerdi membrane from backer board with no effort after it set.
Date published: 2016-08-15
Rated 5 out of 5 by from 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!
Date published: 2011-06-27
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