About Janssens Greenhouses

Janssens Greenhouse Assembly Overview

What Makes Janssens a Quality Greenhouse Brand

Janssens greenhouses are renowned for their European craftsmanship, superior materials, and long-lasting design. Every detail is built to exceed the standards of most competitors in the same price range, ensuring exceptional performance and visual appeal.

Premium Construction and Materials

• Heavy-duty aluminum frame: Janssens uses thicker, stronger aluminum profiles than most greenhouse brands, giving each structure superior rigidity and weather resistance.

• Corrosion-proof hardware: All fittings are made from stainless steel, preventing rust or deterioration in humid or outdoor environments.

High-Performance Glazing

• 4 mm tempered safety glass: While many greenhouses use 3 mm glass, Janssens provides thicker, TÜV and GS-certified tempered glass for better insulation and durability against wind, hail, and impact.

• Full-length glass panels: Each glazing sheet is a single, unbroken panel that creates a sleek, modern appearance—unlike the overlapping or segmented panels found on many other brands.

• Hybrid glazing option: 10mm Twin Wall Heat Block Polycarbonate roof panels. More information and photos here.

• Weather-tight sealing system: Heavy-duty rubber gaskets hold the glass securely in place, improving insulation and reducing heat loss during colder months.

Smart Design Advantages

• Integrated foundation frame (4” high): Included with every Janssens greenhouse, providing a stable, level base that other brands often charge extra for.

• European engineering standards: Janssens greenhouses are precision-built and independently tested for strength, safety, and long-term reliability.

Optional Accessories

Doors

• Additional Sliding Doors
• Additional Hinged Doors
• Lowered Threshholds for Doors
• Drop Kits for Doors (to place on a knee wall)

Windows

• Additional Roof Vents
• 'Push-Open' Side Windows
• Additional Louvre Windows
• Fly Screens for Roof vents
• Fly Screens for Push Open Side Windows
• Fly Screens for Louvre Windows
• Manual Openers for Roof or Side Windows
• Automatic Openers for Roof or Side Windows
• Automatic Openers for Louvre Windows
• Covers for Louvre Windows
• Restraint Cable System for Roof Vents

Shelving

• Top Shelf
• Bottom Shelf (Seed Tray)
• Slatted Shelving

Climate Moderation

• Wooden Roof Shades
• Shade Curtain
• Roll-Up Shades
• Exhaust Fan
• Solar Powered Exhaust Fan
• Intake Vent
• Palma Heater
• Big Red heater
• Digital Thermostat
  

Miscellaneous

• Wheelbarrow Ramp
• Metal Plant Hooks
• Solar Powered Light
• Grow Light
• Scroll Supports
• T Bolts

Warranty