What materials does craft resin's epoxy resin stick to?
Craft Resin bonds well to most porous and semi-porous surfaces, and to many non-porous ones once they're properly prepped. The short version: if a surface is clean, dry, and either porous or lightly abraded, resin will adhere to it. Smooth, flexible, or oily surfaces are where things get unreliable.
Materials it bonds to well
| Material | Notes |
|---|---|
| Wood | One of the best substrates. Keep moisture content below 12% and seal porous or end-grain wood first, or trapped air/moisture can cause bubbling. |
| Paper and inkjet prints | Works on most paper stock. Glossy photo paper tends to give the cleanest, most even finish. |
| Dried paintings (oil, acrylic, watercolor) | Only apply once the paint is fully cured, not just surface-dry — oil paints in particular can take weeks to cure fully underneath. |
| Ceramics and ceramic tile | Bonds reliably. Clean and lightly abrade glazed surfaces for best adhesion. |
| Cured polymer clay | Seals and adds strength once the clay itself is fully cured. |
| Fabric | Resin will stiffen fabric and give it a wet, saturated look — expect a texture change, not just a coating. |
| Sealed or primed MDF and countertops | Works well once the surface is sealed; unsealed MDF can off-gas or absorb unevenly. |
| Sanded metal and aluminum | Sand first to give the resin something to key into — resin does not bond well to a polished, untouched metal surface. |
| Dried natural objects (rocks, shells, dried flowers/leaves) | Organic material should be fully dried before encasing, or trapped moisture will cause decay or cloudiness under the resin. |
Materials it does not bond to (by design)
| Material | Why |
|---|---|
| Silicone | Resin will not stick to cured silicone — this is exactly why silicone molds work for resin casting. Useful to know if you want a release surface. |
| PTFE / Teflon, polyethylene, polypropylene | These plastics are chemically resistant to adhesion; resin will sit on top and can be peeled off once cured. |
| Wax and wax-coated surfaces | A wax layer is a deliberate release agent for the same reason. |
The grey area: glass, plastic, and other smooth surfaces
Resin can bond to glass and to many rigid plastics, but adhesion is weaker and less predictable than on porous materials, because there's no texture for the resin to mechanically grip. In practice:
- Glass — resin will adhere, but the bond is thinner and more prone to peeling at the edges over time, especially with temperature changes. Fine for decorative coating; not something to rely on structurally.
- Rigid plastics (acrylic, PVC, etc.) — results vary by plastic type. Light sanding to create a mechanical key improves adhesion significantly; without it, some plastics can be picked or peeled once cured.
- Metal — bonds fine once sanded, but resin is not a substitute for a structural adhesive on load-bearing metal joins.
Getting a reliable bond
- Clean the surface. Remove dust, oil, and grease — even a light fingerprint of oil can create a weak spot.
- Dry it fully. Trapped moisture is the most common cause of bubbling, clouding, or delamination, especially in wood and organic material.
- Sand smooth or non-porous surfaces. A light scuff with fine-grit sandpaper gives resin a mechanical key on glass, metal, and hard plastics.
- Seal porous substrates first if you don't want the resin absorbing unevenly (unsealed wood, MDF, unglazed ceramic).
- Test on a scrap piece before committing a large or valuable surface — this is the only reliable way to confirm adhesion on a material not listed above.
We do not currently make a food-contact claim for Craft Resin, so treat any resin-coated surface as decorative rather than food-safe, regardless of what material it's bonded to.
Related articles
- Mixing Ratio — How to Measure Resin and Hardener Correctly
- How to Work with Wood and Resin
- What Won't Craft Resin Stick To?
Aug 23, 2026
What went wrong? (Optional)