Greenhouse Roof Angle

Same approximate angles as your 90 degree calculation model.

Greenhouse roof angle.

The best angle for greenhouse glazing in the roof is not as clear cut as some solar greenhouse designers make it sound. Related to the roof slope is the freeboard the space between the lowest point of the roof and the ground. I m not sure what the optimum for greenhouses is although following your stated numbers of 44 degrees latitude with the 20 plus or minus values gives you 64 degrees for winter and 24 degrees for summer. Sunlight which enters the greenhouse and strikes the aluminum foil covered roof white paint works well too is aimed back down to the growing beds.

To find the best angle for a greenhouse roof take your latitude and add 20 degrees. While the logic behind this rule is sound it is a dramatic oversimplification that can lead to costly and. Here s a great article on finding the perfect pitch for your solar greenhouse. If you design your internal structure according to local codes however you will not have any difficulties.

In areas with heavy snow at least 3 or 4 feet is good to have so that snow won t pile back up onto the greenhouse roof or obstruct any vents. Framing and glazing materials. The two most common framing materials are wood and metal. This will shed snow under most conditions but with twin wall coverings it is not always the case.