Internet #202243461

Model #FBG25

Store SKU #731136

Store SO SKU #1000063668

FlexBond 25 lb. Gray 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

Frequently Bought Together

+
Price:
$2047

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

FlexBond Crack Prevention Mortar is a premium quality, polymer-modified mortar with exceptional flexibility and bond strength for tiling difficult surfaces, such as plywood, vinyl and laminates. Also works great for hard-to-bond, nonporous tile, such as porcelain and glass. FlexBond flexes to prevent cracks in porcelain and ceramic tile.
  • California residents
  • Dries in as little as 24 hours
  • Flexes up to 1/16 in. to prevent cracks
  • Great bond strength
  • Qualifies for a lifetime system warranty



Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar Tile Mortar

VersaBond 50 lb. White Fortified Thinset Mortar
current product
FlexBond 25 lb. Gray Crack Prevention Mortar
Porcelain Tile Gray 50 lb. Fortified Thinset MortarProLite 30 lb. White Tile and Stone Mortar
BrandCustom Building ProductsCustom Building ProductsCustom Building ProductsCustom Building Products
NameVersaBond 50 lb. White Fortified Thinset MortarFlexBond 25 lb. Gray Crack Prevention MortarPorcelain Tile Gray 50 lb. Fortified Thinset MortarProLite 30 lb. White Tile and Stone Mortar
Price
$1698
$2047
$2472
$2998
Ratings
(2993)
(584)
(229)
(299)
Product typeThin-set mortarThin-set mortarThin-set mortarLarge format tile mortar
Flooring Material FeaturesFast-dryingCrack resistant,Moisture resistantRadiant heatMoisture resistant,Waterproof
LocationBathroom,Countertop,Exterior wall,Floor,Interior wall,Kitchen BacksplashBathroom,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
Maximum coverage area (sq. ft.)9547100100
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.)
47
Product Width (in.)
14

Details

Additive required
Water
Color Family
Gray
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.)
25
Quantity
1
Returnable
180-Day

Warranty / Certifications

Manufacturer Warranty
Eligible for a Lifetime Warranty

Questions & Answers

252Questions61Answers

Should I mix with a latex additive or just water?

Asked by MW January 4, 2018
10
Answers

Just mix with water

can i use this mortal to install tiles over existing bathroom tiles? i do not want to remove exis...

Asked by jonathan October 30, 2018
6
Answers

You must remove the old tiles. Mike

Can this be used under cement board and plywood?

Asked by Pugs December 29, 2017
6
Answers

this particular mortar is best applied to a cement board backer such as Durock or Hardybacker, but can also be used with wood backing

Can I use this product to adhere 12 x 12 tile in a shower to new drywall

Asked by Ant October 5, 2018
6
Answers

Yes but you should not use drywall around a shower. It will eventually soak in water and mold up. Use cementboard

Can I also use this as a patch filler leveler on my plywood subfloor and then apply my concrete b...

Asked by Mbird May 28, 2019
6
Answers

I would say yes if this was put on a wall. However using on a floor with lots of foot traffic and weight, I would use something more solid and durable such as concrete to be safe.

The description for this product says for use with vinyl and laminate. However, i am not seeing ...

Asked by MRD February 19, 2019
6
Answers

Yes. I’ve set tile over laminate flooring . Just make sure the laminate is glided down good and there’s no bubbles in the laminate.

Can I use this for mesh mounted tile as a backsplash for bathroom sink and above my shower?

Asked by Sillygoosey January 5, 2020
6
Answers

This will work for most mosaic tile, including most glass mosaics if all you want to do is stick it to the wall and make sure it stays there. I would NEVER use GRAY to bond any glass or even most mosaics. Use gray mortars only for gray tile that will be finished with gray spectrum grouts. Use white for any beige/light beige, or ALL GLASS applications.

Can this be used for ceramic tile over plywood?

Asked by Chris November 21, 2013
5
Answers

It can be used on exterior grade plywood. It is better to apply it to cement board though

I have a concrete slab floor with vinyl tiles on it. I want to use FLEXBOND to install ceramic ti...

Asked by Randy September 1, 2018
5
Answers

I had black tar glued vinyl tiles on my basement concrete floor. I needed to level it in places and I used non modified thin set and self leveling cement. Nothing stuck to that black tar, so I decided to grind it off. I used 7" Makita grinder with dust cover and 7inch Dewalt diamond cup wheel. The grinder was attached to my large Ridgid shop vac. I successfully remover the tar and some imperfections but it took me long time. I had to cool down the wheel and the grinder for each 10 sq ft and dust off the filter for each 30-50 sqft. After the grinding any type of mortar or self leveling cement stuck to the concrete without any problems. I did not put concrete primer, I just poured water on concrete and spread it with a roller. My wheel is about 30% worn and I ground 500 sqft. Good luck. It is doable.

Can I use this product to fix cracks in ceramic tile floor?

Asked by Mason July 30, 2015
5
Answers

No, unfortunately it will not. If you have cracks in your tiles, it most likely is the sub-floor moving.

FlexBond 25 lb. Gray Crack Prevention Mortar - page 2

Customer Reviews

  • 584 Customer Reviews
  • 4.7 out of 5 stars overall
93% of customers recommended.
Overall Ratings
5star-icon(448)
4star-icon(89)
3star-icon(20)
2star-icon(9)
1star-icon(18)
Sort By:
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!
Was this helpful?
0
0
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.
Was this helpful?
0
0
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.
Was this helpful?
3
0
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.
Was this helpful?
0
0
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.
Was this helpful?
0
0
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
Was this helpful?
2
0
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
Was this helpful?
0
0
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.
Was this helpful?
0
0
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!
Was this helpful?
1
0
Easy to use and mix. Great adhesion and filling capabilities
Easy to use and mix. Great adhesion and filling capabilities
Was this helpful?
1
0
Review this Product
Share your thoughts with other customers