I am using the EL2 epoxy for a simple wet layup to make a plywood kayak with GRP joints and skin. How much should I worry about amine blush? I am struggling with adequate warmth at present. Before a second coat of resin should I be washing etc to remove any blush - or is this resin non-blushing?

If the mix ratio is good and you keep the temperature around 20C or above then you shouldn't have any issues. We would always recommend getting the temperature to 20C where possible to ensure the resin cures properly in a sensible time and also is not subject to excessive moisture absorption in a cold damp environment.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant