A clear, non-yellowing, TOUGH (hard surface + flexible) repair resin formulated for repairing Styrofoamcore surfboards, sailboards or hobby items. This resin cures very well in sunlight and with our H.O. UV flashlight @ 385nm. Formulated especially This Zero VOC resin is non-flammable and very safe to use yet cures to a very tough finish with considerable flexibility Curing commences within 10 seconds of exposure to mid-day sunshine in non-polar latitudes. Ambient temperatures as low as -20°F or as high as 120°F have little effect on cure time or physical properties of Solarez.