With over 35 years of industry-leading expertise, Keder Greenhouses offer a revolutionary solution for expert growers, smallholders, and home gardeners alike.
Unrivalled in design, a Keder is neither a traditional greenhouse nor a polytunnel.
Instead, it combines cutting-edge materials with advanced engineering to deliver an exceptional growing environment.
At the heart of every Keder greenhouse is a unique 9-layer, ultra-strong bubble laminate - creating thousands of light prisms per square metre. This innovative design ensures no scorch, no shadows, and the perfect balance of light diffusion for optimal plant growth.
This is coupled with a superior-strength, corrosion-resistant frame made from locally sourced ZN35 high-tensile structural steel, featuring a minimum yield strength of 350 N/mm² and a minimum tensile strength of 450 N/mm². This robust construction ensures long-term durability.
Keder greenhouses are windproof up to 120 mph (proven), making them a resilient and reliable choice - even in extreme weather conditions.
With a high-performing thermal R-value of 1.7, Keder greenhouses support true year-round growing.
Whether you’re an expert horticulturist, giant vegetable grower, smallholder, crofter, or passionate gardener, a Keder greenhouse is built to last - delivering over 30 years of dependable performance.
The Ultimate Growing Environment
Testimonials
Neither a
traditional greenhouse nor
a polytunnel
35 years
of expertise
10 Year
UV Guarantee
Ultimate
Growing
Environment
The Experts
Choice
Diffused Light
No Scorch
No Shadow
Super
Strong
High Thermal
R-Value of 1.7
Windproof
Up To
120 MPH
Low
Maintenance
Long Life
David Domoney
Our Domestic range of greenhouses caters for virtually every size of garden.
Its unique modular system can be extended as your requirements increase and can also be relocated if required.
We can provide our 2m and 3m wide greenhouses as either self build kits for the competent DIY enthusiast (we provide a full instruction manual and video) or we can offer an installation service by our professional construction team for an additional charge + mileage + accommodation if required.
Our cold frames are supplied as a self build kit basis only.
Made from high tensile steel frames, paired with our advanced cellular cladding system, this ultra strong combination offers an environment far safer and longer lasting than a traditional glass greenhouse and far more superior than ordinary polytunnels.
Domestic Range
Four Oaks Trade Fair
2nd - 3rd September 2025
A regular appearance for the Keder commercial team as we meet many horticultural companies looking to find sustainable long lasting solutions for their structural growing and retail spaces.
Malvern Spring Show
8th - 11th May 2025
A regular appearance for the Keder team. In 2025 we will be displaying our domestic and smallholder ranges. As well as being joined on Sunday 11th May by our Celebrity Brand Ambassador David Domoney
Alternatively, come and see us at our Head Quarters in Offenham, near Evesham, Worcestershire, where we have our range on show. The oldest greenhouse on site was built in 1990, a perfect demonstration of how long a Keder Greenhouse will last.
Come & See Us At
How to Buy
We have been offering first class customer service for 35 years and we want to continue offering this level of personal service for another 35 years.
If you would like to enquire about our domestic range and discuss what a Keder Greenhouse can do for you, please feel free to email or call us
David explaining the benefits of a Keder
"We’ve had several greenhouses and polytunnels over the years but NOTHING like a Keder Greenhouse, it is a premium quality product. We did a lot of research prior to the investment and particularly liked the videos showing the construction process and the materials used."
"We needed a polytunnel that would withstand the winter gales here on Orkney. We came across the Keder Greenhouses website and were immediately impressed with their site, choices and customer service. We settled for a 3m x 8m design with extra bracing kit. The greenhouse arrived on one single pallet which amazed us, the whole thing was packed to perfection. My husband managed to erect the greenhouse all by himself with very little help from me. They went above and beyond to ensure that we were happy and pleased with our purchase. So, if you are thinking of buying a polytunnel/ greenhouse I would strongly advise you to check out their website and contact them for any extra information."
"We put up our 3x8m Keder this time last year. It has survived a rather long Shetland winter and is filling up nicely for its first full growing season. It’s enabled me to get off to a good start with seedlings and over wintering cuttings coming along nicely. Although our growing season is short we make up for it with longer days, the Keder fabric maximises the light and helps retain heat well. I was a little worried about ventilation as it can get a little breezy at 60 degrees north but even with gusts of 30mph today I’ve had the doors open all day and all is well. Overall, I’m very happy with the Keder Greenhouse and if money were no object I’d certainly get another."
Claire & Ian
Amanda
Anon Via Google