Can the Polyinsulator rot from being damp?
A. No the Polyinsulator that is used experiences no degradation in quality as it is not water absorbing. A special quality pellet is used in the manufacture of the polyinsulator that provides a high fire rating. Once inside the wall, the polyinsulator will not be exposed to any moisture. To start with, when the block of polyinsulator is cast it passes through a heat tunnel ensuring there is absolutely no moisture left in polyinsulator block. This is done to make cutting the block cleaner. If moisture is left in the block it squeezes and makes the block difficult to cut cleanly. Furthermore 2 coats of Sica 1 sealant are used as part of the process of rendering the finish. The sealant used comes with a 25 year guarantee from the manufacturer. It is used in the building of reservoirs.
