building
A Sampling of Minnesota’s Sustainable Building History
Publication Date:
November 1, 2010
1945
Andersen introduced the Pressure Seal double hung window, which uses a removable sash and pressure-seal weather-stripping to keep out wind and precipitation.
1966
The Perm-Shield System, by Andersen, made its debut. The patented, tough vinyl exterior for wood windows was low maintenance and energy efficient with insulating glass.
1972
Andersen introduced the Pressure Seal double hung window, which uses a removable sash and pressure-seal weather-stripping to keep out wind and precipitation.
1966
The Perm-Shield System, by Andersen, made its debut. The patented, tough vinyl exterior for wood windows was low maintenance and energy efficient with insulating glass.
1972
Minnesota GreenStar to Take Center Stage
This has been a great year of progress in Minnesota's efforts to become a national leader in preserving and restoring our environment. From the landmark legislation in addressing climate change and developing sustainable energy resources to the growth of our farmers markets and the success of the light rail, Minnesota is becoming a model for other states and on the national stage.
Minnesota GreenStar
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