DIY Gothic High Tunnel

Our brand-new DIY greenhouse kit is designed for growers who want the snow-shedding benefits, taller sidewalls, and interior headroom of a gothic arch greenhouse. With extra clearance for trellising, airflow, and tall crops, this DIY Gothic high tunnel makes it easy to extend your season and grow more.

These gothic greenhouse kits are designed to save you money on shipping by requiring the purchase of metal and lumber locally. We’ve provided information below from Lowe’s and Home Depot with part numbers and their respective prices* (as of 2025) to help you source what you need.

Check out this quick start guide video for an overview of the build.

See our entire selection of DIY greenhouse kits, which require the purchase of local wood and metal, or shop our inventory of USA-made All-Metal Greenhouse Kits for complete kits.

Not eligible for returns.

Features

• Available in 14’ or 20’ widths and 20’, 40’, 60’, 80’, 100’ lengths
• 14’ wide stands approx. 12.5’–13.5’ tall; 20’ wide stands approx. 15.5’–16.5’ tall
• Gothic arch sheds snow better than round hoop designs
• Taller sidewalls and extra interior headroom for trellising tall crops
• Steeper pitch improves water runoff
• Ideal for growers in snow-prone climates
• FREE SHIPPING - Ready to ship in 2–3 business days

For more information on freight delivery, click here.

Greenhouse Kit Includes:

• DIY gothic preformed peaks
• Spring lock wire and lock channel to keep your greenhouse plastic secure (assumes a single door on your high tunnel). Additional channel may be necessary for a double door or windows.
• Ground post driver to drive your ground posts safely into the ground
• 1 3/8" x 1 3/8" cross connectors to attach arches to ridge poles and to purlins
• Greenhouse Plastic 4 Year 6 mil. Sized to cover the entire greenhouse, including end walls. (It may take an additional week to arrive if freight shipment is required.)
• All required screws, nuts, bolts, and connectors for pole and frame components
• Instructions for the build
• Printable Buy Local Chart
• Lumber and 1 3/8" Top Rail is not included. We want to save you money. Buying this locally will save you thousands, which is why we don't include it. We want you to build a high-quality greenhouse at the most affordable price. See our "Purchase Locally" below for help ordering all the lumber and top rail.

* Lumber choices may be limited by location. Redwood, cedar, or pressure-treated are the best choices for any structure that will be exposed to moisture.