Tenax Gravity Vinyl Ester Knife Grade — Extra-Clear, UV-Stable Ston...
Description
Description
Tenax Gravity Vinyl Ester Knife Grade — Extra-Clear, UV-Stable Stone Adhesive
Tenax Gravity is an extra-clear, knife-grade vinyl ester adhesive for ultra-strong bonding and lamination of marble, granite, quartz, ceramic and other hard surfaces. Its thixotropic knife-grade body holds on vertical joints without sagging, while the extra-clear chemistry cures to a smooth, glossy finish that sands and polishes cleanly — ideal for highly visible seams indoors and out.
| Property | Detail |
|---|---|
| Brand | Tenax |
| Product | Gravity Vinyl Ester Knife Grade |
| Manufacturer | Tenax S.p.A., Volargne (VR), Italy |
| Chemistry | Vinyl ester |
| Consistency | Knife grade (thixotropic paste) — stays put on vertical joints after mixing |
| Color | Extra-clear; translucent and glossy after curing |
| Density | 1.1 kg/L at 25°C |
| Hardener | Peroxide hardener paste, 1–3% by weight (100 + 1–3); max 2% for best color |
| Gel Time (in mass) | 3.5–4.5 minutes at 25°C (77°F) |
| Tack-Free Time | 20–35 minutes at 25°C (77°F), 50% RH |
| Workability Time | 25–40 minutes at 25°C (77°F) — minimum time before cutting and polishing |
| Minimum Application Temperature | +5°C (41°F) |
| Temperature After Curing | Min. −10°C (14°F) / max. +110°C (230°F) in use |
| Adhesion (1 h, CQ26) | Marble 7 MPa · Granite 6 MPa · Quartz 8 MPa |
| UV Stability | High stability in sunlight — low yellowing (ASTM D904) |
| Coloring | Tint with polyester coloring pastes or metal oxides before adding hardener |
| Finish | Smooth, glossy; easy to grind and polish |
| Sizes | 1 Quart, 1 Gallon, 5 Gallon |
| Shelf Life | 12 months in original sealed containers stored at 18–25°C (64–77°F), away from heat, humidity and direct sunlight |
- Extra-clear vinyl ester — near-invisible, glossy seams for visible joints
- Knife-grade thixotropic body does not sag on vertical work after mixing
- Fast gel (3.5–4.5 min) and tack-free in 20–35 min at 25°C — parts can be processed quickly, even in cool shops
- High UV stability and color retention — suitable for indoor and outdoor use
- Cured glue grinds and polishes to a smooth, shiny surface
- Tintable with polyester coloring pastes to match the stone
Bonding, lamination, grouting and repair of marble, granite, quartz, agglomerates and ceramic — mitered edges, laminations and visible seams.
- Make sure the stone is clean, dry and free of dust. Shake or stir the product before use.
- Take only the amount needed; if tinting, add coloring paste first (judge the color after hardening; too much pigment can alter the glue’s properties).
- Add 1–3% hardener paste (max 2% for best color) and mix vigorously — you have about 3.5–4.5 minutes before it gels at 25°C.
- Never return mixed glue to the container. Close the container after use.
- Cut or polish after 25–40 minutes at 25°C; the glue must be applied above +5°C (41°F).
For professional use only. Glue and hardener are chemicals — read the Safety Data Sheet and container label before use, and wear appropriate PPE.
