3Mx8 Self Build + Extreme Brace Kit

The Ultimate Growing Environment - With over 30 years of industry-leading expertise, Keder Greenhouses provide a revolutionary solution for expert growers, smallholders, and domestic gardeners.

Unrivalled in design, a Keder is neither a traditional greenhouse nor a polytunnel. Instead, it combines cutting-edge materials and engineering to deliver an exceptional growing environment.

At the heart of every Keder greenhouse is its unique 9-layer ultra-strong bubble laminate, creating thousands of light prisms per square metre. This ensures no scorch, no shadows, and the perfect balance of light diffusion for optimal plant growth. Coupled with a sturdy high-tensile steel support frame, Keder greenhouses are windproof up to 120 mph (proven), making them a robust and reliable choice, even in extreme weather.

Thanks to its high-performing thermal R-value of 1.7, Keder greenhouses offer a true year-round growing proposition. Whether you're an expert horticulturist, giant vegetable grower, smallholder, crofter, or keen gardener, a Keder greenhouse will stand the test of time—lasting over 30 years.

Extendable in 2m lengths as your needs change, they can be located on a base of compacted soil, grass or hardstanding with specialised fixing methods.

All prices are inclusive of VAT

​Once you have chosen the model of greenhouse you require you will then be able to choose the basic number of accessories in the dropdown menus below.

• Side Staging (SS) | Personal choice | 2m wide 75 cm depth | £210.00
• Crop Rails (CR) | Personal choice | 2m length | £35
• Auto Roof Vent (ARV) | We recommend 1xARV per 4m length of greenhouse | £277.00
• Site Conditions | Confirm if the greenhouse will be on hardstanding, soil or grass
• Back wall preference | Through Door or Rear Vent 90cm width
• Disabled Access | Required or Not Required

If you require more accessories this can be done via the accessories page or the shopping cart.