People often ask:“What is the most important part of a greenhouse or polytunnel?”
The answer lies in another question:“Which part has the greatest influence on the health and growth of plants and crops?”
While the shape and design of a greenhouse or polytunnel contribute to its visual appeal, and the frame provides strength and support for the cladding, neither directly impacts the ability to produce healthy crops. This makes the answer clear:
The cladding is the most critical part.
Why Cladding Matters
Cladding creates the environment necessary for robust plant health and excellent crop yields - all while ideally keeping costs low. Historically, gardeners relied on glass or single-sheet polythene for cladding because they were the most readily available options. However, scientific advancements have brought us Keder Cladding, a cutting-edge cellular material that addresses the shortcomings of traditional cladding materials.
Benefits of Keder Cladding
1. Significant Operational Energy Savings
The true cost of a greenhouse or polytunnel isn’t just its initial purchase price but also the financial investment required over its lifetime. Keder’s advanced cellular cladding retains over 95% of heat radiation, making it the most cost-effective option in the long run.
2. Uniform Light Distribution
Light is a crucial factor in plant growth. Keder Cladding ensures even light distribution across the growing area, eliminating shadowing. It allows high levels of sunlight to penetrate on sunny days while preventing plant scorching and burning. This negates the need for time-consuming and costly practices like whitewashing or shading.
Additionally, Keder Cladding performs exceptionally well on overcast or hazy days, allowing more light penetration than other materials. This makes it particularly suited to the British climate, extending growing seasons significantly.
3. Resistance to Extreme Weather
Keder Cladding is engineered to withstand the harshest weather conditions. It has been tested and proven to endure:
Dry snow loads of up to 4.9 kN/m² (500 kg/m²) - equivalent to 2 meters of snow depth.
Violent hailstorms and heavy snowstorms.
Wind speeds exceeding 140 mph.
In regions like the Shetlands, Orkneys, and Hebrides, Keder Greenhouses are one of the few options highly recommended by the Scottish Crofting Federation, which awards grants to crofters using them.
Back to the Original Question
What is the most important part of a greenhouse or polytunnel?
The answer is unequivocally the cladding, as it plays the greatest role in promoting plant health and growth while offering substantial financial savings over the structure’s lifetime.
The Logical Choice
With all these advantages, the conclusion is clear
Buy the best. Buy Keder. Invest in a solution that lasts a lifetime.
Pictures below is a smallholder range, see our main website https://kedergreenhouse.co.uk for more information on our commercial and smallholder ranges.
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