Description
Overview
Bonstone Historic Restoration Mortar (HRM) is a two-component, lime-based material for aesthetic repairs to older stonework. It produces a limestone-like finish while allowing moisture to pass through the patch.
Features
- Breathable, moisture-permeable repair material.
- UV-stable formulation for exterior restoration.
- Can be finished to a limestone-like surface without sanding or grinding.
What's Included
- 5 lb Part A.
- 2 lb Part B.
Specifications
- Kit weight: 7 lb total
- Components: 5 lb Part A and 2 lb Part B
- Mix ratio: 5:2
- Set time at 75°F: Approximately 30 minutes
- Available colors: Indiana Gray or Neutral
Color Options
- Indiana Gray
- Neutral
Applications
For cosmetic restoration of historic stonework, including Dutchman joints, pits, holes and damaged edges on steps and sills. It can also be used as a slurry coat where the repair calls for that consistency.
Selection and Use
- Choose the color and finish around the existing stone rather than treating Neutral and Indiana Gray as identical.
- Shape and texture the patch during application to achieve the desired limestone-like appearance.
- Use HRM for aesthetic patching; structural problems or moving joints require a separate repair assessment.
