The polythene packaging of Kingspan Kooltherm should not be considered adequate for long term outdoor protection. Ideally, boards should be stored inside a building. If, however, outside storage cannot be avoided, then the boards should be stacked clear of the ground and covered with a polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.
Kingspan Kooltherm K5 External Wall Board should be protected from getting wet during periods of inclement weather prior to the application of the weatherproof render.