Internet #100161308

Model #FBW50

Store SKU #373194

FlexBond 50 lb. White Crack Prevention Mortar

  • High flexibility to prevent cracks in tile
  • Excellent bond strengths
  • Outstanding bond to glass, metal and other decorative tile
  • See More Details

Product Overview

spread mortar with notched trowel

Right for Any Job

Select your mortar based on the specific performance needs of the installation.

Custom Building Products mortar packages

Tile Setting Mortars

CUSTOM has the right mortar for your tile installation project.

Step 2 to lifetime warranty

Lifetime Warranty Installation System

Use qualifying Prep, Set and Grout products to get a lifetime warranty on your tile installation.

lay tile on spread mortar

Tile and Stone Setting

CUSTOM offers the broadest line of tile and stone setting materials to give the exact performance your job demands

traditional thinset good better best

Traditional Thinset Mortars

Use traditional thinset for tile with all sides under 15 in.

large format product hierarchy

Large Format Tile Mortars

Use a large format tile mortar for tile with any side 15 in. or longer.

premium mortar packages

Premium Mortars

Use premium mortars to qualify for a Lifetime Warranty system.

trowel notches and tile size

Small or Big Trowel

Trowel size is based on tile size

mortar coverage based on trowel notch

Less or More Coverage

Coverage based on trowel size

Indoor or outdoor

In and Outdoors

Interior or exterior applications

water drop on tile for wet areas

Use in Wet Areas

Wet applications including showers

compatibility

Works with Any Grout

Compatible with all grout types

Video play

Step by Step

Easy instructional videos online

Custom Building Products FlexBond 50 lbs. 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.
  • 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



  • California residents

Info & Guides

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Compare Similar Tile Mortar

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FlexBond 50 lb. White Crack Prevention Mortar
MegaLite 30 lb. White Crack Prevention MortarSimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
BrandCustom Building ProductsCustom Building ProductsCustom Building ProductsCustom Building Products
NameSimpleSet 1 Gal. (14.25 lbs.) Gray Premixed Thin-Set MortarFlexBond 50 lb. White Crack Prevention MortarMegaLite 30 lb. White Crack Prevention MortarSimpleSet White 3-1/2 Gal. Pre-Mixed Thin-Set Mortar
Price
$2180
$3497
$4597
$4768
Ratings
(1280)
(594)
(34)
(1280)
Product typeThin-set mortarMortarLarge format tile mortarThin-set mortar
LocationBathroom,Countertop,Floor,Interior wall,Kitchen Backsplash,Tub surroundFloor,Interior wallBathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen Backsplash,Shower,Swimming pool,Tub surroundBathroom,Countertop,Floor,Interior wall,Kitchen Backsplash,Tub surround
Flooring Material FeaturesNo mixing required,PremixedCrack resistant,Moisture resistantCrack resistant,Moisture resistant,WaterproofNo mixing required,Premixed
Maximum coverage area (sq. ft.)44100100154
Indoor/OutdoorIndoorIndoor/OutdoorIndoor/OutdoorIndoor
Flooring Product TypePremixed Thin-Set MortarFlooring Powder MortarFlooring Powder MortarPremixed Thin-Set Mortar
View ProductView ProductView ProductView Product

Specifications

Dimensions

Maximum coverage area (sq. ft.)
100
Product Width (in.)
15

Details

Additive required
Water
Color Family
White
Commercial / Residential
Commercial / Residential
Dry time (hours)
24
Floor/wall use
Floor and wall
Flooring Material Features
Crack resistant,Moisture resistant
Flooring Product Type
Flooring Powder Mortar
Flooring Type
Tile
Indoor/Outdoor
Indoor/Outdoor
Location
Floor,Interior wall
Product type
Mortar
Product Weight (lb.)
50
Quantity
1
Returnable
180-Day

Warranty / Certifications

Manufacturer Warranty
1 Year Product

Questions & Answers

256Questions25Answers

I want to use this product for installing 4x16 ceramic subway tiles on shower walls. Is this a good product for this application? Is Prolite better?

Asked by Boneman February 12, 2021
2
Answers

We would suggest the use of a large format tile mortar like MegaLite Ultimate Crack Prevention Mortar. For further assistance please contact us at 1 800 282 8786 option 2.

What does fhe term crack prevention mean in the name of this product. Not sure if it’s to eliminate cracks in tile.

Asked by Boneman February 12, 2021
3
Answers

FlexBond Crack Prevention Mortar flexes up to 1/16" to prevent cracks. For further assistance please contact us at 1 800 282 8786 option 2.

We are remodeling a half bath in our basement and are looking at applying the RedGuard to the con...

Asked by Rich February 11, 2021
2
Answers

In order for us to give you the best possible answer, we would like to know a few more details regarding your project. For further assistance please contact us at 1 800 282 8786 option 2.

i plan to use it to install porcelain tiles at shower walls, which grout should i use ?

Asked by mSharif January 22, 2021
3
Answers

We would suggest the use of Fusion Pro Single Component Grout. For further assistance please contact us at 1 800 282 8786 option 2.

How thin a layer can this be after beating down the tiles?

Asked by Frank December 16, 2020
2
Answers

FlexBond Crack Prevention Mortar bed Thickness will vary depending on the size of notch trowel being used and size of tile being set. For further assistance please contact us at 1 800 282 8786 option 2.

Can this be used outside middle Tennessee

Asked by Dan December 3, 2020
2
Answers

FlexBond Crack Prevention Mortar is suitable for exterior use. or further assistance please contact us at 1 800 282 8786 option 2.

What is the best thinset mortar and grout that can be used on 18 x 18" porcelain tiles outside in...

Asked by HL November 12, 2020
3
Answers

We would suggest the use of our MegaLite Ultimate Crack Prevention Large Format Tile Mortar and our Prism Grout. For further assistance please contact us at 1 800 282 8786 option 2.

2 questions. I'm looking to install flexbond in a 12"x36" outdoor entryway. 1st one will Redguard...

Asked by Th October 19, 2020
2
Answers

You need at least 1” of subfloor and underlayment to achieve proper compression strength and deflection ratings. Tile will hold up to weather conditions as long as water does not penetrate through grout lines. Make sure you seal grout and silicone caulk perimeter.

Can I use on hardy board to fill in gaps

Asked by Bondo October 17, 2020
3
Answers

FlexBond Crack Prevention Thin-Set Mortar is compatible with Hardibacker tile backer board. For further assistance please contact us at 1 800 282 8786 option 2.

We need to drywall around an Acrylic Shower Stall, was advised to use a "Cement based joint compo...

Asked by HoneyDoThis September 14, 2020
3
Answers

Drywall joints should be treated with drywall joint compound. For further assistance please contact us at 1 800 282 8786 option 2.

FlexBond 50 lb. White Crack Prevention Mortar - page 2

Customer Reviews

  • 4.7
    out of 594 reviews
  • 93% recommend this product
5star-icon456
4star-icon90
3star-icon21
2star-icon9
1star-icon18
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Showing 1-10 of 594 reviews
excellent mortar
This has been may go-to mortar for my recent bathroom renovation to secure cement board and then tile. It came highly endorsed by the manufacturer of the cement board. My only critique would be that it was challenging to mix the entire bag and use up quickly before drying. I learned after the first blunder to mix half the bag at a time to have a better mixed batch and prevent drying. Will use again!
by dannyB
Using it to install glass Wall shower tile and mosaic stone floor tiles. Worked perfectly.
Using it to install glass Wall shower tile and mosaic stone floor tiles. Worked perfectly.
by SplitSandLogs
We are not a pros, so we do not have a lot of experience with placing glass tile, however, we hav...
We are not a pros, so we do not have a lot of experience with placing glass tile, however, we have learned a lot, and the FlexBond is only thinset we've found for large format glass tile. My wife and I are putting glass tile in two showers, over a waterproof membrane, which has the potential to create a lot of issues for modified thinset. We began by troweling on a smooth layer, covering all of the walls with the Flexbond and letting that dry. Then smoothing any rough spots we made with the trowel. We did not sand it, but smoothed the rough spots by scraping with a putty knife. Then we had a porous surface to which the glass could be adhered. we used a v notch trowel (recommended by the tile manufacturer) to apply the FlexBond over the dried FlexBond surface. We combed it straight vertically, one course at a time. We also back buttered the glass tiles with FlexBond so we achieved 100% coverage on our tiles. This worked very well. We have placed as many as 10 courses without stopping, and have had no wet weight release or movement issues. We also have tried to remove a dried tile, which would have resulted in destroying the tile and or wall, so we know the bond is very good. After the FlexBond dried (usually the next day) it cleans off of the tile effortlessly. Which is likely why it's hard to find a good thinset for glass tile. The thinset will not stick to the front of the glass tile no matter what, but it will stick to the painted back very well. And it is sanded, but we have had no scratching of the tile when cleaning off the thinset. Cleaning out the grout lines is also quite easy with a linoleum knife. But do this the next day. The longer you wait, the harder it gets. After having done considerable research, and tiling, we believe this is a great product. It has performed very well. Time will tell. If you are placing large format glass tile, don't hesitate to use this product. So far, I have no negative comments, only positive.
by tilesformiles
3 people found this helpful
If I'm going to work on my house, I like to use the best available products (within reason) so I ...
If I'm going to work on my house, I like to use the best available products (within reason) so I don't have issues with it in the future. That's why I chose this Fexbond product. It was easy to use on my mosaic tile. What little bit that got on the top of the tiles was easy to clean off, even after it had dried.
by Sambo
This product was easy to mix and use, causing my tile installation to go smoothly. The powder ro...
This product was easy to mix and use, causing my tile installation to go smoothly. The powder room looks great after the project was completed. I would recommend this product for tile in different areas.
by Ray
I filed over tile. 1st I used MBP, then redcoat. Then I thinset tiles. Everything is perfect
I filed over tile. 1st I used MBP, then redcoat. Then I thinset tiles. Everything is perfect
by JamesBond007
2 people found this helpful
Great product I would never use any other in 1989 track home in Berkeley township nj
Great product I would never use any other in 1989 track home in Berkeley township nj
by 1giantsfan
Worked well and is a good product to use for flooring as it is flexible.
Worked well and is a good product to use for flooring as it is flexible.
by DIYer
We selected this Product because we were laying thin brick pavers on floors and wanted the extra ...
We selected this Product because we were laying thin brick pavers on floors and wanted the extra crack prevention FlexBond provides. Floors have been down 2 weeks and so far seem great!
by livingroom62
1 person found this helpful
Easy to use and mix. Great adhesion and filling capabilities
Easy to use and mix. Great adhesion and filling capabilities
by Bdc
1 person found this helpful
Showing 1-10 of 594 reviews