In ancient times green roofs consisted of cave like structures or sod roofs covered with earth and plants commonly used for agriculture dwelling and ceremonial purposes.
Green roof in winter.
When winter is about to set in it becomes critical to ensure the green roof will not be saturated with water any excess water should be drained out as it can damage the plants when ice is formed.
In winter green roofs can retain between 25 40 of the precipitation that falls on them.
The winter green roof uses evergreens juniper shrubs and a thicker soil base than typical leafy green roofs which generally provide passive benefits to the environment by reducing the need for air conditioning on hot days.
Green roofs not only retain rainwater but also moderate the temperature of the water and act as natural filters for any of the water that happens to run off.
The early months of the winter is a good time to check the nooks and crannies of your roof s waterproofing.
Check the caulking and look over all the access areas and make sure they are all sealed properly.
Additionally before any snow has begun to accumulate on the roof check all areas of the green roof for wind or water erosion.
The winter roof was installed on both a standard test house and an energy efficient winterized house.