greenhouse manufacturing co.
Building a Lean-to greenhouse has its good and bad points. Advantages include convenient house access, better heat retention because one side of the greenhouse is a solid wall which loses less heat than glass, and an attached greenhouse can fit into a more compact space. Disadvantages include the height needed on the wall to which the greenhouse is being attached, obstacles on the wall (such as windows and doors) that need to be worked around, and potential building code issues.
Some things to think about:
Do you have enough height?
A greenhouse roof needs to have enough slope to prevent leaks and dripping condensation. We recommend a 4 in 12 roof pitch as a minimum. So, a lean-to greenhouse extending 6ft from your house needs a minimum 8ft of height, with an additional 4 inches for each additional foot the greenhouse extends from the building wall.
Do you have obstacles to work around?
Do you have a good spot to put the greenhouse?
You need to have a wall that is large enough, in both length and height. It also should be convenient to the house so you can enjoy your greenhouse even when the weather is terrible.
Are there code issues to be worked around?
Building code requirements vary widely from city to city, so there are no hard and fast rules. Our standard greenhouses are designed for horticultural use, not living space. As such, they sometimes do not meet all living space code standards that might be required when attaching to a house.
Our Garden Sun Room model is designed with building code standards in mind, using tempered safety glass in the roof and double strength in the walls, along with our double glazing Thermal Option for extra insulation. Tempered glass, double strength glass or twin wall glazing can be added to all our greenhouse models. We can make modifications to our various greenhouse models to help meet codes. We will do all we can to help you work through issues with the building dept., but some requirements can be costly. Free Standing greenhouses, especially those under 200 sq ft., generally have fewer code requirments. Lean-to greenhouses attached to garages are often not subjected to the permitting process as well.
This 7ft wide Deluxe lean-to greenhouse is built against a stone wall rather than a house wall. This masonry wall provides solar mass, helping take advantage of the sun's energy.
This 5½ ft wide Solite Lean-to greenhouse provides a snug place to over winter plants.
The compact jacuzzi in this 9' x 12' Garden Sun Room is a relaxing place to end a day. Heat and humidity lost from the jacuzzi is good for the greenhouse environment.