What are the Alternative Release Agents for Composite Moulding?
Alternative Release Agents for Composite Moulding
If you are experiencing problems with your current release agent — such as difficult application, poor de-moulding performance, inconsistent finish quality, or unreliable supply — switching to a high-performance semi-permanent release agent can significantly improve your production process.
At CRC UK Ltd, our Marbocote semi-permanent release agents are manufactured in the UK, allowing us to provide reliable stock availability, fast delivery, and expert technical support when you need it most.
High Performance Semi-Permanent Release Agents
We offer an extensive range of mould release agents suitable for a wide variety of composite manufacturing processes including:
- GRP moulding
- Carbon fibre components
- RTM
- Vacuum infusion
- Prepreg processing
- Closed mould systems
Our release agents create a durable release film that delivers excellent release performance while helping achieve a high-quality surface finish.
Marbocote Release Agent Options
Marbocote Fastcote – Fast Wipe-On Application
A quick and easy wipe-on release agent designed for efficient application and reliable release performance.
Marbocote PK4 – Wipe-On Polish Finish
Ideal for achieving a high-quality cosmetic finish while maintaining excellent release properties.
Marbocote Spraycote FD – Spray Application Release Agent
Our fastest application system, designed for rapid mould coverage and increased productivity.
Marbocote 227CEE – Durable Semi-Permanent Release Agent
A highly durable release agent suitable for demanding moulding applications where long-lasting performance is required.
Why Choose Marbocote Release Agents?
Marbocote release agents use advanced silicone-free release technology, helping eliminate transfer and contamination issues on moulded parts.
This provides major benefits including:
- Easier de-moulding
- Reduced mould downtime
- Improved surface finish
- Reduced build-up on moulds
- Minimal cleaning requirements
- Better compatibility with secondary bonding and painting operations
- Lower release agent consumption
- Increased production efficiency
Because there is no silicone transfer, post-moulding processes such as painting, bonding, and coating become far more reliable and hassle-free.
Common Signs You Need an Alternative Release Agent
You may benefit from changing your mould release system if you are experiencing:
- Parts sticking in the mould
- Surface defects or contamination
- Excessive mould cleaning
- High release agent usage
- Long application times
- Inconsistent release performance
- Supply chain delays from overseas manufacturers
Using the correct semi-permanent release agent can reduce production downtime and improve overall part consistency.
Technical Support for Composite Moulding
Our technical team can help recommend the best release agent for your process, mould type, resin system, and production requirements.
Whether you need a wipe-on, spray-on, or highly durable release coating, CRC can help optimise your moulding process.

