
Grow like a pro with the Janssens Gigant 17x17 Victorian Greenhouse - the ultimate solution for year-round gardening. Featuring a robust aluminium frame, toughened safety glass, and elegant Victorian roof crestings, this greenhouse offers unmatched strength and style. With a 13-year warranty and custom sizing options, this greenhouse is a must-have for serious gardeners.
The 17ft x 17ft Janssens Gigant Victorian Greenhouse will fit all of your professional growing needs perfectly. The vast growing area and super strong construction ensure that you can grow a variety of plants and vegatables year round. The Victorian Roof cresting and choice of Green or Black Powdwer Coating means that this greenhouse will also make a stylish statement in your garden. You'll get the strongest Aluminium greenhouse on the market with full modern box section construction, vital for weather resistance, especially in very strong storms and winds. Custom lengths are available in 2ft increments so we will have a size to suit all needs.
All Janssens Gigant Greenhouses are built around a strong box-section aluminium frame, with 4mm Toughened Glass held in with proper rubber glazing gasket to take on the worse of UK weather!
Most Janssens Greenhouses are fully customisable.
The Janssens Foundation Base eliminates the need for a full concrete foundation. Simply assemble your greenhouse and secure it with our quick 4-corner anchoring system!
JANSSENS delivers superior protection with our full-length 4mm toughened glass. Six times stronger than ordinary glass, it offers exceptional durability and safety. Enjoy crystal-clear views and peace of mind, knowing you're shielded by the industry's safest greenhouse glass. Polished edges ensure easy, safe assembly, letting you focus on what truly matters – your thriving garden.
Don't let wind effect your investment with Janssens state-of-the-art glazing system. Featuring:
Janssens cutting-edge tubular aluminium glazing bars are among the sturdiest in today's greenhouse market. Enjoy peace of mind knowing your investment is protected by top-tier materials that outlast and outperform the competition!
Every bolt, nut, and fitting in your JANSSENS greenhouse is crafted from top-quality stainless steel to withstand the elements,
Maximize your growing potential with our comprehensive water control solution:
Set up your new greenhouse with ease. Every model includes:
Janssens only use Qualicoat-certified powder coating on all of their Greenhouse products. This high-quality finish ensures your JANSSENS greenhouse stays stunning for years. Contact us for custom RAL colours.
Janssens Greenhouses were established in 1946 in Lier, Belgium and is now a super modern 6500sqm production facility equipped with the very latest high-tech automated machinery. Many years of production and the very latest design and manufacturing processes make a Janssens Greenhouse one of the best high end greenhouses you can buy today.
Janssens greenhouses come with a 10-year warranty on the greenhouse frame. This warranty covers any manufacturing defects in materials or workmanship. However, it does not cover glass or polycarbonate. The warranty is only valid if the greenhouse is assembled according to the provided instructions.
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A solid base is the backbone of any greenhouse. You might think skipping this step saves time, but trust me—I've seen plenty of greenhouses fail because of poor foundations. A dodgy base causes more headaches than you'd believe.
What happens with a bad base? Glass cracks. Doors jam. The structure twists. Water pools where it shouldn't. And fixing these problems costs way more than doing it right first time.
Read MorePlacing your greenhouse in the right spot makes all the difference between thriving plants and disappointing results. As a greenhouse specialist who's spent 15 years helping UK gardeners optimise their growing spaces, I've seen first-hand how position affects everything from temperature regulation to plant health.
Let me share what actually works in our unique British climate. The greenhouse position might seem like a minor detail, but it's one of those things that can make or break your growing success. I made this mistake myself when I first started - my poorly positioned greenhouse meant I was fighting an uphill battle with inadequate light and temperature fluctuations.
Read More