Fibreglass Kit: Complete kit for repairing and making missing or broken parts of objects in fibreglass, metal, cement, masonry, wood, resin, polyester. Ideal for maintenance of boats – caravans – vans – refrige- rators. Contents of Kit: Standard polyester resin, 0.75 lt. – Catalyst – Mixing pot – Fibreglass – Short bristle brush. How to use: Carefully clean and de-grease the substrate being repaired. Prepare the surface using 40/60/80-grain sandpaper. Prepare the amount of Polyester Resin needed for the repair then add the hardener, adapting the amount to the surrounding temperature (1-2% in the summer and 3-4% in the winter). Mix the two components well to obtain a homogeneous mixture.