Model # FBW50

Internet #100161308

Store SKU #373194

Store SO SKU #1000063655

Custom Building Products FlexBond White 50 lb. Crack Prevention Mortar
0010186412849

Custom Building Products

FlexBond White 50 lb. Crack Prevention Mortar

  • High flexibility to prevent cracks in tile
  • Excellent bond strengths
  • Outstanding bond to glass, metal and other decorative tile
$32.47 / each
If you buy 10 or more
$29.22 / each
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Product Overview

Custom Building Products FlexBond 50 lb. Fortified Thin-Set Mortar is a premium quality, polymer-modified mortar with exceptional flexibility and bond strength. Great for tiling difficult surfaces, such as plywood, vinyl and laminates as well as hard to bond, nonporous tile such as porcelain and glass. Protects against cracking caused by minor in-plane surface movement.

California residents: see   Proposition 65 information

  • Isolates cracks to 1/16 in. and can be applied over cracks to 1/16 in. without additional preparation
  • Add water and mix to apply
  • Covers up to 100 sq. ft.
  • Dries in 24 hours
  • Exceeds ANSI A118.4 and A118.11 specifications
  • Resists mold and mildew
  • Qualifies for a lifetime system warranty



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Customer Questions & Answers

whatis the mixture ratio, water to flex bond thin set, 50 lb. bag for proper mixture for application

cannot find this anywhere
Asked by: Anonymous
I never mix a full 50 lb bag at once so I carefully weigh out smaller amounts from 10 - 20 lbs. Instructions work out to 3.2 oz per lb . I start at a rate of 3.5 oz /lb to get it less stiff, (or almost 10% more), and its still plenty firm. I'll splash in a little more, but at this point you must be careful to not overdo it ( hopefully you have extra powder if you do)
Answered by: BrooklynJeff
Date published: 2017-02-06

best thinset for large format porcelain on wall?

We're doing a shower including the walls; tile is mostly 12 x 24 Atlas Concorde, with some slate (Brazilian, not Indian) mixed in. How is this product for that use wrt sag? Thanks.
Asked by: Anonymous
Custom pro lite is your solution though you may have to special order as not all HD s stock it.
Answered by: John
Date published: 2017-07-14

can i used this directly over the subfloor

Asked by: clay
If you mean to put tile on OSB or plywood etc, NO! You need cement board in between. You can put this under and over the cement board.
Answered by: BrooklynJeff
Date published: 2017-02-06

I used this product on shower tile and floor tile - do I need to seal it?

Asked by: LEESA
Short answer , yes. What type of grout was used? Standard sanded grout would benefit from sealing, however , it does not make it "waterproof". Custom Pro Fusion does not need sealing but is advisable to pre-seal tiles before grouting to ease in residue removal. Premixed grouts also require 3-7 days cure time before exposure to usage. Also recommend using Tile Lab's non acidic grout cleaner/sealer for regular maintenance.
Answered by: John
Date published: 2017-02-28
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Customer Reviews

FlexBond White 50 lb. Crack Prevention Mortar is rated 4.7 out of 5 by 60.
Rated 4 out of 5 by from Bags are not waterproof . The last several bags were allowed to get wet and therefor were lumpy w... Bags are not waterproof . The last several bags were allowed to get wet and therefor were lumpy with some large hard chunks.....Poor handling by Home Depot or shipper. CHECK EACH BAG CAREFULLY !!! Product itself is very good. I am a licensed contractor.
Date published: 2017-04-16
Rated 4 out of 5 by from Works well. The recommended mixture leaves it kind of dry. Use their recommendations and add more water accordingly, not too much though. This starts setting quicker than other mortar, keep that in mind if you plan on working large areas. It may be best to mix half the bag at a time, depending on your job.
Date published: 2017-03-14
Rated 5 out of 5 by from I have used this product on many tile jobs in the past. I have never had it fail. In fact I left ... I have used this product on many tile jobs in the past. I have never had it fail. In fact I left an area where I should have scarped it off and when I tried to remove the cement backer board broke instead of the Flex bond. Strong stuff! Easy to work with when mixed correctly.
Date published: 2017-03-28
Rated 4 out of 5 by from Worked well! Follow the instructions. I had to do some... Worked well! Follow the instructions. I had to do some detail tiling and made smaller batches so it wouldn't dry out on me in the bucket. This worked well but you have about an hour or more working time before the material started to change/ dry.
Date published: 2017-02-21
Rated 4 out of 5 by from Flexbond Easy mixing texture Lay's out well . You should have a yes or no answer or 1 through 10 rating not all people want to take to rightingredients story's takes to much time. Thanks
Date published: 2017-03-21
Rated 5 out of 5 by from Is a soft sturdy thin set that bonds nicely and... Is a soft sturdy thin set that bonds nicely and with my installing a peel and stick flashing membrane over the cracks should work well to avoid slab crack mirroring!
Date published: 2017-03-14
Rated 5 out of 5 by from Local store never seems to have it in grey but white does just as well if it is a little more exp... Local store never seems to have it in grey but white does just as well if it is a little more expensive. Stuff is top notch and worth the extra cost.
Date published: 2017-04-25
Rated 5 out of 5 by from Good product; it is a little bit expensive but this Mortar does not crack and it will hold the ti... Good product; it is a little bit expensive but this Mortar does not crack and it will hold the tiles forever.
Date published: 2017-03-28
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