Superior Buff Polyester Knife Grade Adhesive
Pickup currently unavailable at Dynamic Stone Tools Warehouse (Sterling, VA)
Description
Description
Superior Filled Polyester Knife Grade Adhesive
Superior Filled Polyester Knife Grade Adhesive is a pre-colored polyester adhesive filled with calcium carbonate, made for natural stone. It is used for seaming and repairing natural stone and fills small scratches, cracks, chips and holes. Because it cures harder than standard polyester adhesives, the repair can be polished to match the surface polish of the stone.
Features
- Pre-colored to match common stone colors, so the color does not have to be mixed by hand
- Filled with calcium carbonate, so the cured adhesive polishes to the same finish as the stone surface
- Cures harder than standard polyester adhesives
- Fills stones that have small scratches, cracks, chips and holes
- Knife Grade viscosity: best for seaming and repairing natural stone
- Mix ratio of 2%–4% BPO white paste hardener by weight
- Gel time of 3–5 minutes and cure time of 20 minutes
- Indoor use only, because it is not UV stable
| Part No. | Color |
|---|---|
| 200-02010-10 | Buff |
| 200-02050-10 | Black |
- Test on a sample of the actual stone to confirm bond strength, visual clarity and shadowing before final application. Light-colored porous materials such as quartzite and white marble should be tested for shadowing.
- Make sure all contact surfaces are thoroughly cleaned and completely dry.
- For a custom color match, mix Superior Resin Coloring Paste into the adhesive before adding the hardener.
- Add 2%–4% white BPO paste hardener by weight to the resin, using a digital scale for accurate measurement and only the hardener provided by Superior.
- Mix the adhesive and hardener thoroughly until fully uniform in color and texture.
- Apply the adhesive within the working window (about 4–6 minutes at 70°F / 21°C), then join and clamp the stone.
| Property | Detail |
|---|---|
| Brand | Superior Stone Products |
| Product Line | Superior Polyester “Filled” Adhesives |
| Viscosity | Knife Grade |
| Colors | Buff, Black |
| Physical State (SDS) | Paste |
| Filler | Calcium carbonate (20–25 % by weight per SDS) |
| Mix Ratio | 2%–4% BPO white paste hardener by weight |
| Gel Time | 3–5 minutes |
| Cure Time | 20 minutes |
| Shelf Life | 1 year when properly stored |
| Suitable Material | Natural stone |
| Use | Indoor use only (not UV stable) |
| Hazard Classification (SDS) | Flammable liquid Category 3; signal word Danger |
Can this adhesive be used outdoors?
No. Superior's directions state that Superior Filled Polyesters are for indoor use only because they are not UV stable and should not be used outdoors.
How much hardener is needed?
Superior's directions call for 2%–4% white BPO paste hardener by weight, using only the specified amount and only the hardener provided by Superior.
What is the knife grade best for?
Superior describes the knife grade viscosity as best for seaming and repairing natural stone.
What is the shelf life?
Superior lists a shelf life of 1 year when properly stored, indoors at room temperature and ideally below 75°F (24°C), away from direct sunlight and freezing temperatures.
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE. Read the SDS before use.
