Bonstone Ultimate MPH


Ultimate is a Modified Polyurethane Hybrid (MPH) is a two part, structural, exterior grade system that is ideal for fabrication shops and job-site applications. It is great for re-attaching stone, bonding miters and general bonding of limestone. Best of all, the product is UV stable and non-yellowing!

Offered in standard buff and grey colors.

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  • Easy to use
  • UV Color Stable
  • Zero VOC
  • Non-Yellowing
  • Non-Staining
  • Non-Bleeding
  • Fast-Cure
  • Low-Temperature Cure (+40F)
  • Low-Odor


  • Anchoring
  • Bonding mitered corners
  • Bonding stone returns
  • Bonding liner blocks
  • Laminating limestone
  • Bonding stone to concrete
  • Bonding stone to metal
  • Bonding large structural assemblies
  • Repairing sculptures and monuments

Usage Video


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