No. Field installed overglaze systems create a new airspace that requires airflow to mitigate condensation buildup in the newly created void. Without proper airflow, moisture will build up and create problems for the customer in many climate zones over time. ‘Desiccant only’ moisture control systems will eventually fail to control the condensation once the desiccant is exhausted and overwhelmed leading to foggy, unattractive windows and doors that will be very expensive to fix down the road.