14ft x 42ft Heavy Duty Straight Sided Polytunnel Kit – Professional Greenhouse
£1,190.00
£1,329.00
Engineered for Professional Growers, Allotments & Small Gardens
Optimise your growing space with our 10ft × 42ft Heavy Duty Commercial Polytunnel Kit — a robust, professional-grade structure designed for allotments, serious home growers, and compact market garden spaces.
This high-roof, straight-sided design maximises usable internal height, making it perfect for tall crops like tomatoes, vines, and climbing vegetables — all in a compact footprint.
Built from premium materials and engineered for UK conditions, this polytunnel offers exceptional durability, growing performance, and year-round protection.
Frame: Heavy-duty 35 mm diameter Z35 galvanised steel hoops (1.2 mm wall thickness)
Spacing: 6 ft (1.8 m) hoop centres with integrated ridge bar and internal crop bars for extra strength
Bracing: 4 Wind brace corner struts included as standard
Cover: 720 g/m² UV-stabilised diffused polythene with anti-drip, anti-condensation coating and a 5-year guarantee
Fixings: Full set of galvanised clamps, brackets, bolts, and tensioning components
Base Anchoring: Heavy-duty ground tubes suitable for concreting or hammer-in ground installation
Protection Kit: Anti-hotspot tape, repair tape, and comprehensive printed assembly instructions
Single or double-width hinged timber door kits
Additional internal crop bars or staging systems
Replacement covers and spare fittings for long-term maintenance
Width: 10 ft (3.05 m)
Length: 42 ft (12.80 m)
Ridge Height: Approx. 7 ft 6 in (2.29 m)
Side Clearance: Approx. 2 ft 6 in straight sides before arch — maximises usable vertical space
Steel Tubing: 35 mm Z35 galvanised steel
Cover Spec: 720 g/m² diffused light, anti-drip polythene, UV stabilised (5-year warranty)
Wind Performance: Suitable for all UK exposed sites when correctly installed
Straight-Sided High-Curve Design: Combines excellent headroom with structural strength
Commercial-Grade Strength – Built to last with premium steel and heavy-duty components
Compact but Tall Growing Space – Perfect for tomatoes, vines, tall crops and trellised plants
Advanced Light Diffusion – Encourages strong, even growth and reduces risk of leaf scorch
UK Weather Ready – Engineered for resilience in high winds and heavy weather
Peace of Mind – 5-year cover warranty and steel frame with a 20+ year lifespan
UK-Based Support – Ongoing technical support and easy access to spare parts
Supplied as a complete self-build kit
Requires 2–3 people for safe and efficient assembly
Typical build time: 1–2 days
Tools required: spanners, drill/driver, hammer, shovel/spade, spirit level
Must be installed on level ground, or levelled to your ground and securely anchored
Clear, step-by-step printed instructions included for easy setup
Fast UK mainland delivery – typically within 5–10 working days
Delivery surcharge applies to Scottish Highlands, Islands & remote areas
5-Year cover warranty and 20+ year frame lifespan expected
UK-based customer service team available for technical advice and replacement parts
Compact footprint. Serious growing performance.
Add to basket now or contact our team for expert guidance on sizing, siting, and installation.
