Are Polytunnels better than greenhouses?

Polytunnels are so much better value than greenhouses. And the bigger the planting area the more money you’ll save by opting for a polytunnel. Of course, there are exceptions to every rule. The exception here is if you only have a small space.

How big is a poly tunnel?

This makes them a great choice for people who want a flexible home for their plants. Direct Polytunnels has a huge selection of polytunnels that range from 10 x 12 feet – a great size for a standard garden or allotment plot, all the way up to 18 x 66 feet.

How much does it cost to cover a polytunnel?

As a general rule of thumb, a replacement polythene polytunnel cover will cost you approximately 15-20% of what you paid for the whole polytunnel in the first place.

What are the disadvantages of polytunnels?

Disadvantages of polytunnels compared with glasshouses

• Tunnels are often colder inside than outside during a frost.
• Harder to shade than glass eg with spray-on shade treatments.
• Are more storm-prone in extreme weather .. especially the plastic blowing away.
• Additional periodic cost and labour of plastic replacement.

How do you keep a polytunnel warm in the winter?

Insulate your polytunnel by covering ventilation and doors with bubble wrap, keeping out icy draughts and retaining the heat. A full layer of bubble wrap on the inside of the tunnel, fastened with cable ties or string between the hoops and the polythene cover, will provide even further insulation.

Do polytunnels need to be level?

Ideally, polytunnels should be put up on level ground with at least 90cm (3ft) of space on all sides, and should be even further from potential hazards such as hedges and ditches. However, very often these ideal circumstances just don’t exist.

How long will a poly tunnel last?

Polytunnels can serve you well between 15-20 years but the covers need to be replaced every few years.

How long does a polytunnel last?

What is the best plastic for a polytunnel?

I recommend the standard, light-diffusing polythene which admits around 89% of daylight. Always use horticultural grade polythene, which has a uv stabiliser, without which it would be brittle and break within a year.

Are cheap polytunnels any good?

The cheaper types of polytunnels do not provide good light levels for your plants, ventilation standards are low and they are potentially “blowaways”. However, if money is short they may be your only alternative.

How do you keep a polytunnel warm at night?

Is a polytunnel warmer than a greenhouse?

Heat retention: Greenhouses often require more heat during the winter months, whereas a polytunnel covered with a Thermal polythene and without the drafts of a greenhouse, can help if you’re considering over-wintering crops.

How do you stop a polytunnel from blowing away?

We would recommend that if you are placing your polytunnel in a windy location, that you opt for crop bars and additional storm bracing. We would also recommend that you take extra care in making sure that the plastic is pulled taut over the structure and will not flap about too much.

Can a polytunnel withstand wind?

Polytunnels don’t look very strong But polytunnels are incredibly resistant to wind. Assuming it’s anchored correctly a heavy duty polytunnel will ride out the stormy British weather.

How big is the replacement cover for a Gardman polytunnel?

This heavy duty replacement cover measures 3m x 2m and is designed to fit the Gardman Reinforced Polytunnel. Fits Polytunnels 3m x 2m x 1.9m* Reinforced PE Cover* Zipped Roll up doors at either end* Zipped Roll up windows * Insect Mesh panels Home

What type of Garden cover should I use with my polytunnel?

Large zipped doorway – the cover has a roll-up door with ties for easy access and ventilation. This Spare Cover is only suitable for use with the Gardman Polytunnel. Heavy Duty Cover – Specifically designed to fit the Gardman Polytunnel, it comes reinforced with green nylon and UV stabilised for a long life.

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