TuffStuff® Base Coat Resin is available to order in 15kg tins. Each tin holds approximately 13.5 litres of base coat, which covers 10 square metres of roof space. For each square metre of 450gsm glass fibre reinforcing mat 1.2 litres of base coat resin is required. If using thicker 600gsm glass fibre reinforcement mat 1.6 litres of base coat resin is required. It is essential that cans are stirred thoroughly prior to use. Catalyst must be used with base coat resin otherwise it will not cure.