20′ x 10′ Forest Timberdale 25yr Guarantee Tongue & Groove Pressure Treated Windowless Double Door Reverse Apex Shed (6.00m x 3.21m)

Overview

The 20′ x 10′ Forest Timberdale is an exceptionally spacious wooden shed designed and built in Worcestershire by the UK’s leading manufacturer of garden buildings. This impressive double door reverse apex shed combines premium construction with market-leading security features, making it ideal for secure, high-end garden storage or a professional workshop space. Backed by a 25-year anti-rot guarantee, it represents the pinnacle of British-made shed quality.

Key Features

• Pressure-treated timber with 25-year anti-rot guarantee – no further treatment required
• FSC®-certified, ethically sourced wood from sustainable forests
• Completely modular design for flexible door placement and easier assembly
• Windowless design for enhanced security and privacy
• Ledged and braced double doors with exterior turn buttons, interior bolts and rim lock latch
• High roofline delivering exceptional headroom and storage capacity
• White Glove Delivery Service included (packaging removed, delivered to your garden)
• Optional professional installation available

Roof Type

This reverse apex roof design offers distinctive aesthetic appeal whilst maximising internal headroom. The roof features a high-grade, polypropylene-backed felt cover for superior weatherproof protection. Two decorative diamond-shaped finials enhance the shed’s attractive appearance.

Dimensions

Measuring 6.00m x 3.21m (20′ x 10′), this extra-large garden shed provides exceptional storage space. The high roofline delivers plenty of headroom, making it suitable for both storage and workshop use.

Construction

The Timberdale range features top-quality modular construction throughout. Built with 12mm tongue and groove boards supported by exceptionally robust 28mm x 56mm framing, this shed uses 30% more timber than standard sheds, resulting in unmatched strength and durability.

The complete modular design means the shed is delivered in smaller sections of interchangeable panels, making assembly straightforward. These panels also provide flexibility – you can decide where to position the double doors to perfectly suit your requirements.

Both floor and roof are manufactured from premium 12mm tongue and groove. The floor easily handles regular footfall and is fitted with pressure-treated bearers, providing extra support and protection against ground moisture. The solid ledged and braced doors offer storage-friendly access whilst maintaining security.

Treatment & Guarantee

All timber is pressure-treated and FSC®-certified, ensuring ethical sourcing from well-managed forests. The market-leading 25-year anti-rot guarantee means maintenance is virtually eliminated, saving time and money throughout the shed’s lifespan. No further treatment is required after delivery.

Doors & Windows

The double door design features solid ledged and braced (Z-frame) construction for maximum durability. Doors are fitted with exterior turn buttons, interior bolts and a high-quality rim lock door latch, providing excellent security for storing valuable tools. The windowless design adds an extra security layer whilst the high roofline maximises storage potential.

Assembly Information

Instructions are included for a straightforward assembly process. The modular design breaks the shed into smaller, interchangeable panels, significantly easing the assembly experience compared to traditional wooden sheds.

Delivery Information

Forest’s White Glove Delivery Service provides free delivery to most UK addresses, with the shed delivered straight into your garden with all packaging removed. Professional installation is available as an optional chargeable extra. You must prepare an appropriate base (slabs, concrete, or suitable foundation) before delivery.

Optional Upgrades

We offer two shed base options to simplify preparation:

• Wooden Shed Base Kit: UC4 incised, pressure-treated timber framework (7.5cm height x 300.6cm width x 590cm depth). Guaranteed rot-resistant for 15 years. Faster and more cost-effective than laying slabs or concrete.
• Plastic Shed Base Kit: 91 interlocking recycled plastic squares (500 x 500 x 40mm each) with heavy-duty weed membrane. Eco-friendly, reusable, allows for drainage and ventilation. Installation recommended before professional installation service.

For other garden storage solutions, explore our full range of sheds and outbuildings.

Why Choose the Forest Timberdale?

As Forest’s premier shed range, Timberdale offers exceptional build quality backed by genuine British craftsmanship. The 30% extra timber, superior framing, and pressure-treated construction create a shed that outperforms standard competitors. Whether you need secure storage or a professional workshop space, this windowless double door reverse apex shed delivers uncompromising quality and lasting value.