DIY Gothic Greenhouse Kit: High Tunnel Hoop House

Grow Bigger. Go Gothic.

If you're serious about extending your season, the gothic arch is the upgrade your grow operation deserves. Steeper pitch. Taller sidewalls. Better snow shedding. More headroom for trellising, airflow, and the tall crops that round hoops can't handle. This DIY Gothic High Tunnel Kit gives you professional-grade structure at a fraction of the cost — because you're sourcing lumber and top rail locally.

We've done the homework for you. Below you'll find part numbers and pricing from Lowe's and Home Depot (as of 2025) so you know exactly what to order and where.

New to the build? Check out our quick start guide video for a full overview.

Not eligible for returns.

Why Gothic?

• 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

What's Included

• DIY gothic preformed peaks
• Spring lock wire and lock channel to secure your greenhouse plastic (assumes single door; additional channel may be needed for double door or windows)
• Ground post driver for safe, accurate post installation
• 1-3/8" x 1-3/8" cross connectors for arches to ridge poles and purlins
• 4-year, 6 mil greenhouse plastic sized to cover the full structure including end walls (may require an additional week if freight shipment is needed)
• All required screws, nuts, bolts, and connectors
• Build instructions
• Printable Buy Local Chart

What's NOT Included (and Why)

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. 

* 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.