Product Description

🔧 A wire strainer multiplies your tension force

The simple turn‑and‑lock mechanism isn’t just convenient — it gives you mechanical advantage, meaning a small twist can generate hundreds of pounds of tension in the straining wire. That’s why they’re ideal for keeping crop bars, ridge wires, and side bracing tight without specialist tools.

🌬️ Proper wire tension improves polytunnel wind resistance

A well‑tensioned straining wire helps the frame resist lateral movement. Even a small amount of slack can increase wind‑induced flex, which accelerates wear on polythene and fittings. A £2 strainer can meaningfully improve the tunnel’s stability.

🪵 They’re also used in fencing — but polytunnel use is more precise

In agricultural fencing, strainers are used to tension long runs of wire. In polytunnels, the distances are shorter, so over‑tensioning is the bigger risk. Too much tension can distort timber end frames or pull eye bolts out of softwood.

💡 One strainer per wire run is usually enough

Because the mechanism locks under load, you rarely need two strainers on the same wire. If someone uses two, it’s usually to correct a poorly anchored end rather than for strength.

Description

🔧 A wire strainer multiplies your tension force

The simple turn‑and‑lock mechanism isn’t just convenient — it gives you mechanical advantage, meaning a small twist can generate hundreds of pounds of tension in the straining wire. That’s why they’re ideal for keeping crop bars, ridge wires, and side bracing tight without specialist tools.

🌬️ Proper wire tension improves polytunnel wind resistance

A well‑tensioned straining wire helps the frame resist lateral movement. Even a small amount of slack can increase wind‑induced flex, which accelerates wear on polythene and fittings. A £2 strainer can meaningfully improve the tunnel’s stability.

🪵 They’re also used in fencing — but polytunnel use is more precise

In agricultural fencing, strainers are used to tension long runs of wire. In polytunnels, the distances are shorter, so over‑tensioning is the bigger risk. Too much tension can distort timber end frames or pull eye bolts out of softwood.

💡 One strainer per wire run is usually enough

Because the mechanism locks under load, you rarely need two strainers on the same wire. If someone uses two, it’s usually to correct a poorly anchored end rather than for strength.

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Delivery

Delivery Lead Times

We are currently estimating that all Fruit Cages, Super Strength, and Garden Polytunnel orders will be despatched in 1-3 working days.

Polytunnel Accessories (including polytunnel covers) will be despatched in 1 -3 working days.

Commercial polytunnels will be despatched in approximately 3- 5 working days. Please ask when ordering.

Please note: Commercial Polytunnels require a forklift or adequate help to offload by hand. Please contact us should you wish to discuss this.

Greenhouses

With effect for all new greenhouse orders placed from the 6th of February 2023, the following lead times can be quoted on your website, display sites, and sales literature.

Mill finish with Horti and toughened glass - 4-5 Weeks
Powder Coated Standards (Compact, Maxim, Streamline, Delta, Craftsman, High Eave, Strata, Vantage, Belmont) 8-10 Weeks for ALL colours
Powder Coated Specials (all other models - Titan, Lean To, Dwarf Walls, Edge, Zenith, Supreme, and Classique) 10-14 Weeks for ALL colours

Please contact us should you wish to discuss this.

For offshore Islands, we will deliver to any UK mainland address of your choice. See the delivery page for more information

Sorry, but we can no longer deliver to the EU. This includes Southern Ireland.

Please Note If you are buying online and paying by ClearAccept or PayPal. You will be charged the commission that we are charged by them for the transaction if for any reason the customer has to cancel.

We supply and deliver polytunnels and greenhouses throughout the UK.

Customer Reviews

Wire Strainer

🔧 A wire strainer multiplies your tension force

The simple turn‑and‑lock mechanism isn’t just convenient — it gives you mechanical advantage, meaning a small twist can generate hundreds of pounds of tension in the straining wire. That’s why they’re ideal for keeping crop bars, ridge wires, and side bracing tight without specialist tools.

🌬️ Proper wire tension improves polytunnel wind resistance

A well‑tensioned straining wire helps the frame resist lateral movement. Even a small amount of slack can increase wind‑induced flex, which accelerates wear on polythene and fittings. A £2 strainer can meaningfully improve the polytunnel’s stability.

Wire Strainer

Product Description

🔧 A wire strainer multiplies your tension force

🌬️ Proper wire tension improves polytunnel wind resistance

🪵 They’re also used in fencing — but polytunnel use is more precise

💡 One strainer per wire run is usually enough

Customer reviews

🔧 A wire strainer multiplies your tension force

🌬️ Proper wire tension improves polytunnel wind resistance

🪵 They’re also used in fencing — but polytunnel use is more precise

💡 One strainer per wire run is usually enough

Delivery

Wire Strainer

🔧 A wire strainer multiplies your tension force

🌬️ Proper wire tension improves polytunnel wind resistance