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IN STOCK AT BONSTONE

Bonstone Materials a Hawk Research Laboratories brand is pleased to provide this communication series to help our customers stay informed of product innovations, product enhancements, and more!

THIS EDITION'S FEATURED PRODUCTS

STONE RESTORATION PRODUCTS

Bonstone’s stone restoration products are engineered for seamless repairs that blend with original masonry, while offering reliable adhesion, durability, and color-matching.

Designed for use on historic structures as well as contemporary stonework, they help preserve architectural integrity while providing practical solutions for cracks, chips, and surface deterioration.

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BONSTONE™ HISTORIC RESTORATION MORTAR (HRM)

Lime-Based Patching Mortar

(7lb & 63lb Kits Available)

Bonstone™ Historic Restoration Mortar (HRM) is a two-component, fast setting, lime-based, latex modified patching mortar.

Product Information:

UV-stable
Fast Setting
Breathable, Moisture-Permeable Patch
Resembles Natural Limestone Finish
No Sanding or Grinding
Easier to Use Than Last Patch™ Limestone

Available Colors:

Indiana Buff, Indiana Gray, Silver Buff, Neutral, Red Sandstone, Birmingham Buff, Mankato Cream, Mocha Cream, Mankato Pink, Dark Chocolate, Mountain Valley, Castagna Dark, Brownstone, Mankato Yellow, Amalfi, Castagna Light
Download HRM Color Chart

Applications:

Historical building restoration
Fill Dutchman joints
Aesthetic patching and surface repairs to steps, sills, and edges
Repairing pits and holes
Can be used as a slurry coat

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Pro Tip: Apply HRM to a Slightly Damp Surface

For best adhesion of Historic Restoration Mortar, lightly mist the surface before mixing and applying.

BONSTONE LAST PATCH™ LIMESTONE

UV-Stable Stone Patching Compound

(3lb Kits Available)

Bonstone Last Patch™ Limestone is a UV-stable, stone patching compound.

Product Features:

UV-stable
Colors & Filler to Match Look of Textured Stone
Stronger Than HRM
Requires Dry Surface
Combine Colors For In-Field Color Matching
Faster Set Times Using Universal Accelerator
Can be Used With Last Patch™ Powdered Tints

Colors Available:

Indiana Buff, Indiana Gray, Texas Cream, Cottonwood, Silverdale, Bluestone, Silver Buff, Lueders Buff, Beumaniere Brown
Download LPL Color Chart

Applications:

Structural patch
Repairing broken corners, steps and sills
Patching chips, holes and spalls
Crack repair in limestone panels

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LAST PATCH™ STONE DUSTS

Last Patch™ Stone Dusts are ideal for coloring Last Patch™ Limestone, Historical Restoration Mortar, epoxies, urethanes, and polyesters.

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Pro Tip: D/2 Cleans Safely Around Plants & Grass

D/2 Biological Solution is biodegradable and safe around plants and wildlife. It cleans effectively, and does not contain bleach, salt, solvents, or acids!

D/2 BIOLOGICAL SOLUTION

(Quart, Gallon, 5 Gallon Pail & Drum Available)

Applications:

Cleaning headstones and monuments
Cleaning outdoor structures and surfaces
Restoration cleaning

D/2 Biological Solution is a specially formulated biological cleaner that removes environmental pollution, dirt, and staining caused by mold, mildew, lichen, and algae. D/2 Biological Solution is ideal for use on indoor and outdoor surfaces.

D/2 Biological Solution is the only product developed for conservators, by conservators. It has been successfully used to clean millions of buildings and monuments, from the Arlington Cemetery to the White House.

Product Features: