Overcoming Common Gelcoat Problems
In order to achieve a good gelcoat surface you must make sure the following practices are adhered to
- Make sure the gelcoat is within shelf life
- Stir the gelcoat before decanting
- Always add 2% of the recommended catalyst and mix thoroughly
- Ensure the mould is high quality and at a temperature between 18 and 25°C, if possible
- Always ensure a good even thickness of 500 - 600 microns of gelcoat is applied in one layer
- Avoid pouring the gelcoat onto the mould surface as this may leave witness lines (for some colors)
- Always make sure the workshop temperature is above 15°C
- Always make sure the gelcoat has reached workshop temperature before it is use
- Clean brushes are essential
- The workshop should be free from dust and other debris to avoid contamination
For more information on common gelcoat application errors please view the Gelcoat Quality Guide.