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FlexBond 50 lb. White Fortified Thinset Mortar (20 Bags / Pallet)

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

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Product Overview

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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Price
Ratings
(617)
(617)
(240)
(617)
Product typeThin-set mortarThin-set mortarThin-set mortarThin-set mortar
LocationBathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen Backsplash,Shower,Swimming pool,Tub surroundBathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen Backsplash,Shower,Swimming pool,Tub surroundCountertop,Exterior wall,Floor,Interior wall,Kitchen BacksplashBathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen Backsplash,Shower,Swimming pool,Tub surround
Flooring Material FeaturesCrack resistant,Moisture resistantCrack resistant,Moisture resistantRadiant heatCrack resistant,Moisture resistant
Maximum coverage area (sq. ft.)1140200031503325
Indoor/OutdoorIndoor/OutdoorIndoor/OutdoorIndoor/OutdoorIndoor/Outdoor
Flooring Product TypeFlooring Powder MortarFlooring Powder MortarFlooring Powder MortarFlooring Powder Mortar
View ProductView ProductView ProductView Product

Specifications

Dimensions

Maximum coverage area (sq. ft.)
2000
Product Width (in.)
15

Details

Additive required
Water
Color Family
White
Commercial / Residential
Commercial / Residential
Dry time (hours)
24
Flooring Material Features
Crack resistant,Moisture resistant
Flooring Product Type
Flooring Powder Mortar
Flooring Type
Cement,Ceramic,Glass,Porcelain,Stone,Tile
Indoor/Outdoor
Indoor/Outdoor
Location
Bathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen Backsplash,Shower,Swimming pool,Tub surround
Product type
Thin-set mortar
Product Weight (lb.)
50
Quantity
20
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
Eligible for a Lifetime Warranty

Questions & Answers

260Questions22Answers

We're wanting to install 12 x 24 tile on a concrete subfloor. We have a radiant heat system and a...

Asked by Bear May 6, 2021
1
Answer

Don't use this stuff, it might work but you should use a regular thin set. The choice of thinset depends on 2 things, the thickness and color of the tile. I'd recommend white as my go to color. Check the size of the tile your using and whether it's indoor or outdoor and if it will be in freezing temperatures or not. Best to call the manufacturer's technical help line to get the best advice, you can find it on the internet for each manufacturer. I get the best help from those folks. Good luck, installing tile is one of my favorite DIY projects, I've done hundreds and hundreds of square feet on all kinds of surfaces.

Need a product to fill expansion joint in concrete garage before laying porcelain tile

Asked by Richard April 17, 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 just put this over a brick side and cement bottom of a small pool. The pool has been dry for da...

Asked by ArtP March 27, 2021
2
Answers

FlexBond Crack Prevention Thin-Set Mortar is intended to be used to bond natural stone and tile. For further assistance please contact us at 1 800 282 8786 option 2.

Can this be used to set tiles over a tile redi pan

Asked by Rick February 24, 2021
3
Answers

FlexBond Crack Prevention Mortar is a modified thin-set mortar that exceeds ANSI A118.4, A118.15 and A118.11 standards without the need for additives. Please refer to Tile Redi's installation guidelines to ensure this product will comply with their systems warranty. For further assistance please contact us at 1 800 282 8786 option 2.

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.

FlexBond 50 lb. White Fortified Thinset Mortar (20 Bags / Pallet) - page 2

Customer Reviews

  • 4.7
    out of 617 reviews
  • 93% recommend this product
Filter by:
Showing 1-10 of 617 reviews
Given its description I was under the impression I could use it as a waterproof coating for an in...
Given its description I was under the impression I could use it as a waterproof coating for an inground pool with the intention of overcoating it with a waterproof paint. After parging the walls and bottom of the pool this stuff started developing surface cracks as it dried.
by Art
First time with tile DIYer March 2021
I used 6 1/2" Daltile Titanium tiles in my alcove bath. I used aqua defense over cement board. I made small batches, which made all the difference, of the thin set to a paste consistency. 1/4" trowel. 1/8" spacers. Cleans well off of the tile. Sets in 24 hours but I needed to pop out a few tiles and it didn't ruin the cement board. Backbuttered all tiles. It's working out great! But I don't have anything else to compare it to but I'm a fan.
by OutliersUnited
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
4 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
Showing 1-10 of 617 reviews