please see more info at our backyard greenhouses page
This 12’W x 18’L High Profile Mini Greenhouse has a single layer of 6 mil plastic for the roof and ends. It is used as a “season extender”. To make it a year round structure a second layer of plastic would be added to the roof, and an inflator fan kit would be supplied to blow air in between the layers.*we only sell 7 mil plastic currently
This building sits on a 4” x 4” pressure treated beam (there are other environmentally friendly alternatives available as well), which is anchored into the ground. Ventilation can be done manually (through doors and windows or by adding roll-up sidewalls), or mechanically by adding an exhaust fan.
COLDFRAME vs. GREENHOUSE
A COLD FRAME usually has a single plastic covered structure and used as a season extender
A GREENHOUSE usually has a double plastic cover with air in between and sides that roll up for year round use and better heat efficiency.
- Custom widths, heights & hoop spacing
- Roof vents & forced ventilation packages
- Various types & sizes of doors with end framing priced separately
- 8mm polycarbonate sheeting for roof and/or ends
- Roll up sides for natural ventilation & reduced condensation
What are some of the benefits of going with a bigger structure over a smaller structure?
Budget often dictates that someone needs to start small, especially when a person is just starting out as a grower with a greenhouse.
There is also the perceived notion that staying smaller means less heating cost. In itself, that is true, since heat loss is in direct proportion to surface area exposed to the outside.
As I have mentioned before, it is very important to weigh expense
A smaller air volume has less natural circulation.
Proper air circulation for plants is critical regardless of the season.
Think of a deep pond versus a shallow pond. The deep pond never has algae on the surface because of the increased movement.
Going with a taller greenhouse will automatically increase the circulation the same way.
Another point to consider with a taller greenhouse, is that there is more open space above the plants.
This open space is where moisture can go, away from the plants even before the greenhouse ventilation system does its job.
With a lower greenhouse, moisture is always in close proximity to the plants. In a taller structure, the plants will be dry much sooner.
Moist plants in a stagnant air mass are prone to disease. These plants will, as a result, produce less.
As always, be aware of the bigger picture.