Complete selection of release agents Complete selection of release agents for epoxy , polyester and gelcoat : TR-108 carnauba release wax, silicone-free release sprays Achem 3007S and Achem SG-1008S , the water-soluble PVA release agent (polyvinyl alcohol) and talcum powder Finntalc M-30-SQ for powdering/matting. Tip: For new or "green" molds,...
Release agents (6)
Complete selection of release agents
Complete selection of release agents for epoxy , polyester and gelcoat : TR-108 carnauba release wax, silicone-free release sprays Achem 3007S and Achem SG-1008S , the water-soluble PVA release agent (polyvinyl alcohol) and talcum powder Finntalc M-30-SQ for powdering/matting.
Tip: For new or "green" molds, often choose a TR-108 wax + PVA barrier film combination. For series work on established molds, release wax or a silicone-free release spray is often sufficient.
Product overview (quick selection)
| Product | Type / Basis | When to Use | Key Benefits |
|---|---|---|---|
| Release agent TR-108 | Carnauba release wax (hand rub) | Installing new molds, gelcoat/FRP, polyester | Proven, robust release; polishable shine; silicone-free |
| Polyvinyl Alcohol (PVA) | Water-soluble barrier film (spray/brush) | New/porous molds, complex geometry | Visual film; water soluble; minimizes chemical adhesion |
| Achem 3007S | Silicone-free wax-based release spray | Fast, clean series work; epoxy, polyester, gelcoat | Fast application, even layer, no silicone contamination |
| Achem SG-1008S | Silicone-free wax-based release spray | Alternative spray with similar application | Consistent release; suitable for composite/FRP |
| Finntalc M-30-SQ | Fine talcum powder | Powdering of molds, rubber, silicone; matting | Dry slip, fine matt effect, easy to dose |
Release wax TR-108 (carnauba)
- Preparation: Clean and dry the mold; apply compound/polish if necessary
- Wash in thin layers (3–6x for new molds), let it "raise" and polish each time
- Application: hand lay-up, gelcoat, polyester/epoxy composites
PVA release agent
- Creates a physical film between the mold and the laminate; ideal when there are doubts about release.
- Apply with HVLP or a fine brush/foam; evenly, without sagging.
- Aftercare: wash the film with water after demoulding
Silicone-free release spray
- Fast, clean release based on wax; no "silicone transfer"
- Spray finely onto a clean mold; build up a thin, even layer
- Suitable for epoxy, polyester, gelcoat, composite
Talcum powder finntalc M-30-SQ
- Powdering of rubber/silicone parts or molds for dry slip
- Mattes lightly and prevents sticking; easy to brush out
Quick application tips
- → Always degrease/clean before wax/spray/PVA; use a suitable mold cleaner
- → New molds: start with multiple layers of TR-108 ; add PVA for extra security
- → Serial work: maintenance coats of wax or spray thinly and update regularly
- → Always test on a test piece (temperature, curing, gloss, release)
Frequently Asked Questions (FAQ)
Wax or PVA: which do I choose?
Wax (TR-108) is the base for most molds. PVA is added as an additional film for new/porous molds, aggressive resins, or complex shapes.
Are the Achem sprays silicone-free?
Yes, both sprays are silicone-free, wax-based release agents —useful when silicone contamination is undesirable.
Does this work on both epoxy and polyester?
Yes. Always check the mold condition, layer thickness, and curing conditions for consistent release.
Advice & order
Are you unsure whether to choose release wax, PVA, or release spray? We'll help you choose the right combination for your mold (epoxy, polyester, gelcoat) and process.