Elevate your gardening experience with the 8x20 Janssens Modern Pent Roof Greenhouse. Enjoy superior strength, ample head height, and customizable options for a truly unique garden oasis. Backed by a 13-year warranty, this greenhouse is a must-have for any avid gardener.
Add a set of hinged double doors to your greenhouse
Add a Single Hinged Door to your greenhouse
Add a set of Double Sliding Doors to your Greenhouse
Add a Single Sliding Door to your greenhouse
Add the Colour Matched Full Length 458cm long integrated shelving to the side of your greenhouse to help retain your floor space
Add the Colour Matched Full Width 310cm long Seed Tray Shelving to the rear of your greenhouse to help retain your floor space
This 1 Tier Vitavia Colour Matched greenhouse staging gives you a handy work surface and storage area. Dimensions: 76cm (H) x 50cm (D) x 120cm (W)
Add the Colour Matched 150cm long x 23cm wide integrated shelving to your greenhouse to help retain your floor space
This 2 Tier Vitavia Colour Matched greenhouse staging gives you a handy work surface with additional low level storage. Dimensions: 76cm (H) x 50cm (D) x 120cm (W)
This little top level Colour Matched shelf attaches to 1 or 2 Tier staging to give you a bit more storage space
Add the Silver 150cm long x 53cm wide integrated staging to your greenhouse to help retain your floor space
This automatic opener for your roof vents will automatically open your roof vents to ventilate your greenhouse when it becomes too hot.
Curtain shading will protect your plants from sun scorch and provide shade to moderate temperature. 6ft x 8ft.
A louvre window brings fresh cool air into your greenhouse to moderate the temperature inside. An essential add on.
This automatic opener mechanism will open your louvre window for you when you’re not around. No need to worry about ventilation, this does it automatically for you! (Does not include louvre window).
Add the Janssens retractable shading kit for ease of use
Add roof ventilation to your greenhouse to help moderate the temperature
Help recirculate the air in your greenhouse with a side vent or two!
This Hygrometer will measure the humidity levels inside your greenhouse.
This Soil Thermometer will let you track the temperature of your soil inside the greenhouse.
This thermometer will tell you your maximum daytime temperature as well as record the lowest night time temperature in your greenhouse.
Add this 100L water butt kit that includes: Butt, Tap & Lid - Black Stand
The 8x20 Janssens Modern Pent Roof Greenhouse is the perfect building if you are looking for a lot more head height and practical growing space. The unique design makes the Modern a great place to relax with friends while making a striking statement in your garden. Not quite big enough, add a 2ft extension in the options below.
Pick from a green or black powder-coated finish to suit your garden or personal style preferences. Both Hinged and Sliding Double and Single Doors are available as options below to fully customise your greenhouse.
All Janssens Modern Greenhouses are built around a strong box-section aluminium frame and base, 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.
Delivery is currently within 8 weeks for Urban Models, 10-12 Weeks for Master Models and 16 weeks for all other models to UK Mainland. Your exact delivery day will be confirmed with you at least 3 days before the day by telephone.
Please note Some Scottish postal codes are subject to delivery charges.
Optional Installation information: Installation will be carried out around 14-21 working days after delivery. Optional Installation will only be carried out on a surface of slabs or concrete and only with the recommended base plinth. You may be charged for accessories Installation is for the Greenhouse only and does not include staging, accessories etc
2360mm (7′ 8″)
6020mm (19′ 9″)
2700mm (8′ 10″)
2040mm (6′ 8″)
1400mm (4′ 7″) x 2000mm (6′ 6″) (aperture)
2360mm (7′ 8″) x 6020mm (19′ 9″)
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 â 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.