Installing shutters in Seattle is a key to winter warmth. Glass windows account for approximately 60% of heat loss during the cooler months. This loss can be rectified by reducing the cold that is being transferred through the glass. One cost effective solution, which doesn't involve major structural work is installing wood shutters on the inside of the glass areas. Testing has demonstrated that the reduction in heat loss is over 50% when shutters are installed. This is a terrific solution for your comfort during these cooler winter months and is also a great long term solution for the environment.