Here are three basic sizes to help inform your decision before contacting us:
A greenhouse, or high tunnel as this style is more appropriately called,
effectively moves your production space one USDA growing zone closer to the equator.
This means that your crops will experience a warmer climate, as well as protection from adverse
weather events. Both these features enable you to grow more crops, faster, and for a longer portion of the year.
This classic design is simpler to construct and so cheaper to install.
All tunnels close with a gather-and-stake style with the plastic, gathering it together
and staking it ~10’ beyond the last rib of the tunnel. This gives the end-walls of the tunnels
incredible wind resistance, but can impede access to into the tunnel.
You can upgrade any tunnel to have a flat end-wall with a few different door options.But, this requires upgrading wind bracing to the tunnel as this style is pushed harder by the wind.
Every tunnel has two ends, and each single door costs as follows:
Doors can affect the structural integrity of the build.
Using a single door requires the use of partial wind bracing: see below.
This is additional bracing for the flat sides of the tunnel. It’s not often required in the Willamette Valley, but might be in your specific location.
These braces also help the rigidity of longer tunnels.
Lift kits raise the entire tunnel another 16″ off the ground. This gives you and your crops valuable headroom. Plants can grow higher. Your tunnel traps more air for greater insulation.
Upgrade to a heavier gauge (for windier or snowier conditions, or heavy crop load tied to the tunnel structure) || +$20
Heavier gauge (for windier or snowier conditions, or heavy crop load tied to the tunnel structure) || +$40
Swap out the fabric purlin strap for steel purlins. This dramatically increases the structural stability of your tunnel. This improves wind resistance, snow load capacity, and even just trellising plants onto the overhead structure.
We swap out the self-tapping screws for a drill and some bolts! We pre-drill all the connection points and secure them with nuts and bolts. This adds tremendous rigidity and life to the structure. This is particularly useful if you intend to be putting the tunnel up and down with any recurring frequency.
First, please schedule a short (15-minutes or less) consultation meeting via phone or Zoom.This consultation is the necessary first step in figuring out the details needed to set up your greenhouse for long-term success.