20′ x 10′ Forest 4Life 25yr Guarantee Overlap Pressure Treated Double Door Apex Wooden Shed (3.21m x 5.96m)
Overview
The Forest 4Life 20×10 double door apex wooden shed offers exceptional storage space and makes an excellent garden workshop. This pressure-treated overlap shed combines spacious dimensions with a robust design, backed by Forest’s market-leading 25-year anti-rot guarantee. Built in the UK from FSC-certified timber, it’s engineered for long-term durability without maintenance.
Key Features
- Pressure-treated wood with 25-year anti-rot guarantee – the longest on the market
- Fully modular design for easier assembly and greater versatility
- 30% more framing than standard wooden sheds for superior strength
- Double-door configuration with flexible placement options
- 8 PET-glazed shatterproof windows for natural light
- Security-enhanced with double-Z framing, hidden hinges, and hasp & staple plate
- UK-made from FSC-certified timber
- White Glove Delivery Service included
Roof Type
This wooden garden shed features an apex roof design that combines aesthetic appeal with practical benefits. The roof is constructed from 8mm solid sheet and reinforced with a metal truss bracket. A premium mineral-felt covering provides complete weatherproof protection. Smooth-planed barge boards and attractive finials complete the stylish finish.
Dimensions
The 20×10 shed measures 5.96m in length and 3.21m in depth, providing 20 square metres of storage space. The high roofline delivers generous headroom and maximises internal storage options.
Construction
This pressure-treated wooden shed is built to exceptional standards:
- Walls: 7mm overlap cladding with straight-cut boards for superior weatherproofing and visual appeal
- Floor: 12mm solid timber construction with pressure-treated bearers for protection against ground moisture
- Roof: 8mm solid sheet with metal truss reinforcement and mineral-felt covering
- Fully modular panel design allows easier assembly and customisation
The modular construction includes 30% more framing than standard overlap sheds, ensuring exceptional rigidity and strength throughout the structure.
Treatment & Guarantee
Pressure treatment protects the wood against rot, and the 4Life guarantee covers the timber for 25 years against rot failure – unmatched in the market. The wood never requires retreating, eliminating ongoing maintenance and saving time and money over the shed’s lifetime.
Doors & Windows
The double-door configuration includes double-Z framing for added strength and shape retention. Hidden security hinges and a hasp & staple plate (padlock not included) protect your tools and equipment. Doors can be positioned flexibly to suit your garden layout.
Eight PET-glazed windows flood the interior with natural light. These recyclable windows are completely shatterproof and resist fading and discolouration from UV exposure.
Assembly Information
The fully modular design delivers the shed in smaller, interchangeable panels, making assembly significantly easier than traditional wooden sheds. Clear instructions and a complete set of fixings are provided. For those preferring professional fitting, Forest offers an optional installation service.
Delivery Information
Forest’s White Glove Delivery Service brings your shed free to most UK addresses, delivering it straight into your garden with all packaging removed. This premium service is included in your purchase.
Optional Upgrades
Enhance your shed with available extras:
- Professional installation service
- Wooden shed base kit (pressure-treated, 15-year guarantee)
- Plastic shed base kit (100% recycled plastic, interlocking design)
Consider a garden storage base if you’re preparing ground without existing slabs or concrete.
Frequently Asked Questions
How long does the 4Life guarantee last? The pressure-treated timber is guaranteed against rot for 25 years – the longest guarantee available on the market.
Will the wood need retreating? No. Pressure-treated wood never requires retreating, saving you maintenance time and cost.
Can I customise door and window positions? Yes. The fully modular design allows market-leading flexibility in positioning doors and windows to suit your requirements.
Is a shed base included? No, but wooden and plastic base kits are available as optional purchases to provide a secure, durable foundation.



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