Description
Overview
Bonstone Last Patch Limestone is a mortar-consistency patching compound for cosmetic repairs that need to resemble limestone. The kit combines a textured Part A with liquid Part B and can be shaped to rebuild small surface defects.
Features
- Exterior-grade, UV-stable aesthetic repair material.
- Useful for overfill-and-finish repairs and stone corner reconstruction.
- Available colors suit different limestone tones.
What's Included
- 1 quart Part A.
- Four 1 oz tubes Part B.
The kit photo shows the container and hardeners, not the selected patch color. Confirm the color against a physical sample before making a visible repair.
The Bonstone reference card shows twelve labeled color swatches, product containers and three stone edge/corner repair photos.
The card states: Last Patch Limestone is a uniquely designed patching compound for limestone and sandstone. Used for aesthetic patches and repairs on coarse grained stones, concrete and masonry substrates. Because of its special properties, Last Patch camouflages its patchwork by absorbing water just like the porous stone surrounding it.
Product information printed on the card:
- UV Stable.
- Set Time 45 min @ 75° (the card does not specify the temperature unit).
- Can be used in below freezing temps.
- Can be color matched.
- Absorbs water similar to stone.
Applications printed on the card:
- Structural Patch
- Repairing broken corners
- Repairs chips and spalls
- Ideal for step and sill repairs
- Patching exterior pavers
| Code | Printed name |
|---|---|
| L1 | Indiana Buff |
| L2 | Indiana Gray |
| L3 | Texas Cream |
| L4 | Cottonwood |
| L5 | Silverdale |
| L6 | Bluestone |
| L7 | Silver Buff |
| L8 | Lueders Buff |
| L9 | Beumaniere Brown |
| L10 | 1/2 Gray, 1/2 Tx Cream |
| L11 | 1/2 Buff, 1/2 Tx Cream |
| L12 | Orange |
L9 is printed “Beumaniere Brown”; that spelling is preserved. This reference card does not establish which colors are offered by the current product options.
Specifications
- Kit format: Quart Part A with four 1 oz Part B tubes
- Mix ratio: 7 parts A to 1 part B by weight
- Consistency: Mortar-like / knife grade
- Preparation: Dry, dust-free stone without oil, grease or coatings
Color Options
- Indiana Buff
- Indiana Gray
- Texas Cream
- Beaumaniere Brown
- Blue Stone
Downloads
Applications
For limestone surface patches, anchor holes, damaged corners and capping of crack repairs. The textured compound is selected for its limestone-like appearance rather than for a glassy, polished-granite finish.
Selection and Use
- Measure by weight: the separate mixing instructions specify 7:1. Do not substitute equal-sized volume measures.
- Mix thoroughly and apply promptly. Form the patch as close as practical to the finished profile to reduce later grinding.
- Use compatible powdered tint for color adjustment and follow the supplied instructions for permitted additions. Keep Part B tightly closed and follow the label’s storage and finishing-time directions.
