General Instructions for working with glassfibre
1. Work in dry, well-drained and warm conditions. Dampness and cold inhibit cure.
2. Protect yourself and your clothes. Wear gloves. Wear a fume mask if working in enclosed spaces. Protect your eyes from contact with resin, catalyst and acetone.
3. Thoroughly prepare surface to be worked on, removing all trace oil. dirt, water etc. For repairs to existing GRP ensure a good key is obtained by aggressive sanding with coarse grit sandpaper.
4. Have everything ready before starting work: cut glass mat to size. Pour the required amount of resin into a container. Have a jar of acetone ready to clean the brushes and rollers after use.
5. Add hardener to the resin accurately and carefully – too much will prevent a cure, too little will retard it. As a rule of thumb 20cc of hardener to 1 Kilogram of resin should be used, giving a pot life of about 20 minutes at 20 deg C. In warm weather reduce this to no less than 10cc per kilo and in cold weather increase it to no more tha 30cc per kilo. Only catalyze as much resin as can be used within the pot life.
6. Using a brush or mohair roller, apply the resin evenly over the surface of the fibreglass. Lay down the glass mat and apply more resin, spreading out liberally and evenly over the mat. Using a paddleroller, or stippling with a brush, throughly ‘wet-out’ the glassfibre, so that the glass is fully impregnated with resin and all air bubbles removed.
7. Wash out brushes and rollers thoroughly in acetone after use. To save for reuse follow this by washing in warm soapy water and allow to dry.
Health and Safety
Please refer to the labels on the resin, catalyst and acetone containers and note the hazardous nature of the products and the safety precautions to be taken when using them. For further information refer to the relevant MSDS (Material Safety Data Sheets) – available on request.
Keep all materials our of the reach of Children