Riga greenhouse - World of Greenhouses - 8

Riga greenhouse - World of Greenhouses - 11

Riga greenhouse - World of Greenhouses - 12

Riga greenhouse - World of Greenhouses - 13

Riga greenhouse - World of Greenhouses - 15

Riga greenhouse by Hoklartherm/Exaco - Multiple sizes

Regular price $ 5,399.00

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Year-End CLOSEOUT — Very Limited Stock! In-stock Riga 2S, 3S, 4S and Riga 3 at special closeout prices, plus a FREE foundation frame, while supplies last. Call or text 732-806-7959 for closeout pricing.

German Engineering: Strength, Precision, and Performance - exceptional insulation and strength with 8mm side walls + 10mm front and back panels.

13 gauge aluminum extrusions superior durability and lasting reliability

Model :

Description

The Riga Greenhouse — German-Engineered for Four-Season Growing

The Riga is designed, engineered and manufactured in Germany by Hoklartherm, a leading European maker of commercial and hobby greenhouses, sunrooms and pavilions. Its distinctive curved "onion" shape isn't just good-looking — it sheds snow and deflects wind, and with more window and door ventilation than most greenhouses in its class, it's built for serious growing all year long.

Free Shipping · Financing Available · Price Match · Selling Riga Greenhouses for 10+ Years

Available in six sizes from 54 to 165 sq. ft. — narrow models (Riga 2S, 3S, 4S, 7'8" wide) and wide models (Riga 3, 4, 5, 9'8" wide). See the Sizes/Specs tab for full dimensions, doors and windows.

Built for Strength

Reinforced 13-gauge aluminum framing — extremely heavy-duty construction with custom high-strength profiles.
Profiles permanently joined to each other, so the frame won't loosen over time from wind pressure — and load-bearing profiles run continuously, with no weak points.
Curved, sloped walls shed snow naturally and reduce wind resistance.
Rated for a 30 PSF ground snow load and engineered for high winds.
Stainless steel hardware that resists corrosion for lasting reliability.
Heavy-duty Dutch barn door with keyed lock, an oversized rear window, and automatic roof vent openers.

Superior Glazing & Insulation

The Riga uses German-made, UV-protected twin-wall polycarbonate — 8mm on the main body and 10mm on the front and back walls for extra strength — compared with the 4mm panels found on many hobby greenhouses. Thicker glazing means more consistent interior temperatures, lower heating costs and real year-round growing in colder climates (insulation R-value 2.0).

Other Riga Models

Want a different look or more space? The Riga Black adds a powder-coated black frame, Victorian roof cresting and a crystal-clear front, and the Riga XL is our 14'-wide commercial and school greenhouse with 16mm triple-wall panels.

Talk to Us

A leading Riga dealer. We're experts in greenhouses, sunrooms and garden rooms, and we've been selling Riga greenhouses — and solutioning them for every type of install — for over 10 years. That long tenure means expert advice on sizing, foundations, installation and accessories, and our best price for your project. Please call or text us at 732-806-7959.

FAQ

Narrow or wide model?

The narrow Riga S models (7'8" wide, 7'1" peak) fit tighter yards; the wide models (9'8" wide, 7'7" peak) give more headroom and room for benches on both sides. We usually recommend going one size bigger than you planned.

Do I need a foundation?

Yes — the Riga must be anchored to a level, solid foundation. A concrete slab, concrete piers or a treated timber base all work, and the greenhouse can be anchored directly to them. The optional Riga foundation frame (sold separately) is recommended if you're setting it on pavers, gravel or ground that isn't perfectly level and square.

Do I need a permit?

Often, since this is a permanent structure — requirements vary by town, so check with your local building department before you order.

What if I have more questions?

Call or text us at 732-806-7959 — texting is the fastest way to reach us. We're happy to help.

Features

RIGA Greenhouse features:
-Extremely heavy-duty construction
-First-class insulation: R or K-value 2.0
-Heavy duty Dutch Barn Door with keyed lock: 30" wide x 72" tall narrow unit / 79" tall wide unit
-Oversized Rear Wall window: 30" wide x 42" high with adjustment arm
-Roof Window(s): 40" w x 24" d; with Automatic Window Opener
-8 MM UV coated twin wall polycarbonate over main body
-10 MM twin wall polycarbonate in front and back walls for extra strength
-Rated for a 30 PSF ground snow load; engineered for high winds
- Reinforced 13-gauge aluminum framing for extreme durability
-Sloped walls designed for optimal snow shedding
-Inside walking height: 6’1” near shelves, 6’11” in the middle of the narrow unit and 7’6” high for a wide unit.
-We recommend you buy one size bigger than you planned.
-Excellent Warranty: Polycarbonate: 10 years; Frame: 15 years
-Made in Germany

ACCESSORY KIT OPTION:
Accessory Kit contains: base, 1 top shelf, 1 regular shelf

Sizes/Specs

RIGA 2s
Length: 7' (2 panels)
Width: 7'8"
Peak Height: 7'1"
Area: 54 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 2'6" W x 6' H
Windows: 1 Roof Vent, 1 Rear Window
Window Openers: 1 Automatic (Roof)
Window Size: 3'5" x 2'1"

RIGA 3s
Length: 10'6" (3 panels)
Width: 7'8"
Peak Height: 7'1"
Area: 81 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 30" W x 72" H
Windows: 1 Roof Vent, 1 Rear Window
Window Openers: 1 Automatic (Roof)
Window Size: 3'5" x 2'1"

RIGA 4s
Length: 14' (4 panels)
Width: 7'8"
Peak Height: 7'1"
Area: 108 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 30" W x 72" H
Windows: 2 Roof Vents, 1 Rear Window
Window Openers: 2 Automatic (Roof)
Window Size: 3'5" x 2'1"

RIGA 3
Length: 10'6" (3 panels)
Width: 9'8"
Peak Height: 7'7"
Area: 102 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 30" W x 79" H
Windows: 1 Roof Vents, 1 Rear Window
Window Openers: 1 Automatic (Roof)
Window Size: 3'5" x 2'1"

RIGA 4
Length: 14' (4 panels)
Width: 9'8"
Peak Height: 7'7"
Area: 135 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 28 ¾" W x 77" ¾ "H
Windows: 2 Roof Vents, 1 Rear Window
Window Openers: 2 Automatic (Roof)
Window Size: 3'5" x 2'1"

RIGA 5
Length: 17'6" (5 panels)
Width: 9'8"
Peak Height: 7'7"
Area: 165 sq. ft.
Doors: 1 Barn Style Hinged Door w/Lock
Door Size: 28 ¾" W x 77" ¾ "H
Windows: 4 Roof Vents, 1 Rear Window
Window Openers: 4 Automatic (Roof)
Window Size: 3'5" x 2'1"

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Buying for a school, growing program, or your own backyard?

Built for serious growing spaces, the Riga line scales for school and community programs. As a longtime dealer, we handle PO ordering, sizing, and site planning — for institutions and backyards alike.

See how we work with schools, landscapers & homeowners →