Bonstone Last Patch Limestone Repair Kit

Description

Bonstone Last Patch Limestone Repair Kit packages the materials and hand tools needed for small limestone repairs in one portable case. It is intended for chips, holes, spalls, cracks, broken corners, steps, sills, and localized panel damage. Three common limestone colors are included so restoration crews, stone fabricators, and maintenance teams can select a close starting shade without purchasing separate full-size containers for every service call. The compact quantities also make color trials and small-batch mixing more practical when the repair area is limited. This can reduce setup time.

Where Bonstone Fits Limestone Repair Work

The kit is sized for targeted repairs on architectural limestone and similar masonry details. It supports patching damaged edges, rebuilding small missing sections, filling surface defects, and repairing cracks where the surrounding stone remains sound. The included Buff, Gray, and Texas Cream compounds cover frequently encountered limestone tones. Color can still shift with aggregate, age, weathering, and surface finish, so a test patch in an inconspicuous area is the right way to confirm appearance before completing a visible repair.

Good preparation matters. Remove loose or unsound material, clean dust from the repair area, and make sure the substrate is stable before mixing. Shape the cavity so the patch has clean bearing surfaces rather than a feather edge that can break away. Measure and blend the selected repair compound with its matching Part B according to the current instructions. Place the mixture firmly into the prepared area, slightly overfill when later shaping is required, and protect it from movement or contamination while it sets.

How Bonstone Last Patch Is Mixed and Finished

The product information carried with this kit specifies a seven-to-one mix ratio and a set time of about forty-five minutes at 75 degrees F. Temperature, batch size, and the condition of the repair can change handling, so installers should use the current instructions as the governing reference. The supplied accelerator can help manage the repair process when its use is appropriate. Mixing cups and sticks keep small batches controlled, while gloves support cleaner handling on site.

After the material has set sufficiently, bring the patch back to the surrounding profile with the included sanding disc or other stone-finishing tools suited to the surface. Work gradually, especially near corners and fine edges. Honed, textured, and weathered stone may require a different final technique than polished material. The objective is a sound transition that follows the original shape and visual character, rather than an oversized patch that draws attention to the repair.

Kit Contents and Specifications

Explore more specialty repair adhesives for stone and masonry work. Brand and product-family resources are available from manufacturer repair resources.

Need Help?

Need help choosing a repair color or planning the preparation and finishing sequence? Call (800) 220-1966 or email [email protected].