As an alternative to GRP/FRP water storage options, our tanks have no need for insulation jackets which are likely to deteriorate over time. Instead we have an outer tank which makes sure that the insulation is fully protected from external conditions, this prevents the foam from being damaged. The tanks are insulated with a 25mm - 30mm thick high grade polyurethane foam. This closed cell foam is thermally stable between -30°C and 100°C making the tank suitable for external conditions. The covered bund stops the build-up of rainwater and debris.