what glue works on styrofoam
You have a few good, safe options for gluing Styrofoam; the key is to choose glues that do not contain strong solvents that melt foam.
Quick Scoop
- Use foam‑safe / Styrofoam‑specific glues when you can; they’re designed not to melt polystyrene and give a strong bond.
- Standard PVA/white craft glue (like school glue) works well for light crafts, especially foam‑to‑foam or foam‑to-paper/cardboard. It is slow‑drying but safe and kid‑friendly.
- Foam‑safe CA (cyanoacrylate) glue is great for small parts and model planes: it sets in seconds and won’t eat the foam, but the bond can be a bit brittle.
- Spray adhesive (labeled safe for foam) is ideal for large surface areas like sheets of insulation or big craft boards.
- Low‑temperature hot glue can work for quick fixes, but high heat may melt or dent Styrofoam, so test on a scrap first.
- Some construction / foam board adhesives and branded “Styrofoam glue” products are made specifically for insulation boards and structural foam uses.
Glues to avoid on Styrofoam
- Strong solvent‑based adhesives (many contact cements, some spray glues, acetone‑based products) can dissolve or severely pit the foam.
- Standard super glue can sometimes attack foam unless clearly labeled foam‑safe, so check the packaging.
Simple example
If you’re making a school diorama with foam hills and paper scenery, a PVA/white glue or tacky glue is usually enough: brush a thin layer, press, and let it dry overnight. For an RC plane wing repair or small high‑stress joint, a foam‑safe CA glue or foam‑safe Gorilla‑type glue will give a stronger, more durable bond.
Mini table of common options
| Glue type | Works on Styrofoam? | Best for | Main cautions |
|---|---|---|---|
| PVA / white craft glue | Yes, safe | Light crafts, foam-to-paper/foam | Slow to dry, not very water‑resistant | [1][3]
| Foam‑safe CA glue | Yes, if labeled foam‑safe | Small parts, models, fast fixes | Fumes, can be brittle after curing | [3][1]
| Spray adhesive (foam‑safe) | Yes, for large areas | Sheets, large panels, crafts | Odor, not ideal for tiny joints | [5][1]
| Low‑temp hot glue | Sometimes | Quick prototypes and repairs | Too hot can melt foam, bulky glue lines | [1][3]
| Styrofoam / foam board adhesive | Yes, designed for it | Insulation, construction, strong bonds | Longer cure, more permanent | [7][5]
| Solvent-based contact cement | Often no | Other materials, not foam | Can melt or destroy Styrofoam | [8][6]