Bonstone Last Patch™ Gel

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$13.31 $219.62
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Bonstone Last Patch Gel was used in the construction of the Milwaukee Art Museum. (Photo Credit: Andrew C./Flagstaff, USA; CC)

Bonstone Last Patch™ Gel is an exterior grade, UV stable stone repair compound for granite, marble, travertine and other honed to polish limestone surfaces. It is a truly unique two-component system and can be used indoors and outdoors, but its most distinctive value lies in its outdoor use, because of UV stable aesthetic patch which allows it to withstand sun exposure without discoloring.

In comparison with Bonstone’s Last Patch Dymond, Last Patch Gel is slightly more flexible.

For even faster set time, use Bonstone’s Last Patch Accelerator.


  • Very fast setting – quick traffic and scaffold time
  • UV stable – withstands sun exposure without discoloring
  • Exceptional strength and durability
  • Slightly flexible to absorb movement in stone
  • Will cure at below-freezing temperatures with Fast Patch Accelerator
  • Can be color matched
  • Hold through freeze-thaw/no shrinkage/no pop-offs

Note: For even faster set time, use Last Patch Accelerator. Last Patch Accelerator is not recommended for work over 85°F.


    • Aesthetic patches and repairs on fine grained stones
    • For use indoors or outdoors
    • Seams for countertop barbeque areas

Product Demo
  • Patching face pins on stone panels
  • Crack repair from hairline to ¼ inch
  • Surface patching to “Dutchman Joints”
  • Monument repairs
  • Building facade repairs, chips, spalls and sign hold repairs
  • Countertop repairs
  • Floor and tile restoration
  • Crack repair in stone panels and sills
  • Patching exterior pavers and steps

Additional Information


Technical Data

Mix Ratio = 1:1 by volume
Set Time = 15-20 min @ 75°F

Kit Includes

1pt A w/3 B Tubes + Tube Key


2oz Kit, Pint Kit, Quart Kit