Greenhouse Roof Angle

Framing and glazing materials.

Greenhouse roof angle.

Related to the roof slope is the freeboard the space between the lowest point of the roof and the ground. Solar greenhouse designers often cite a rule of thumb along the lines of. If you design your internal structure according to local codes however you will not have any difficulties. The standard pitch for a greenhouse roof is 6 by 12.

Same approximate angles as your 90 degree calculation model. 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. While the logic behind this rule is sound it is a dramatic oversimplification that can lead to costly and. To find the best angle for a greenhouse roof take your latitude and add 20 degrees.

The best angle for greenhouse glazing in the roof is not as clear cut as some solar greenhouse designers make it sound. 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. This will shed snow under most conditions but with twin wall coverings it is not always the case. 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.