During winter, unpredicted weather conditions can affect waterproofing applications. Rain, especially, can be unexpected and can heavily compromise the application of the system build-up. ALCHIMICA’s same day waterproofing system based HYPERDESMO®-HAA can be applied in a single coat, on a single day, hence allowing applications to take place in a tight schedule. Within 2-3 hours from application, HYPERDESMO-HAA forms a rainproof skin that protects the substrate. In regions where unexpected climatic conditions occur, ALCHIMICA’s same day waterproofing system based on HYPERDESMO®-HAA can be applied in a single coat, on a single day, hence allowing applications to take place in a tight schedule and thus eliminating the risk of uncured membrane damages due to rain.