The Flat Pack Sheds 4ft x 20ft Pent Shed comes flat packed and includes express FREE delivery.
Regarding garden storage, the 20ft x 4ft Pent Shed from our Fast & Free range is a true game-changer. This flat-packed garden building is designed with the unpredictable British weather in mind and combines durability, style, and practicality. Delivered free of charge within 3-5 working days, it’s a hassle-free solution for homeowners seeking top-quality DIY garden storage.
Built to Withstand the Elements
Our 20ft x 4ft Pent Shed is engineered with robust tongue and groove cladding panels, offering superior resistance against wind, rain, and frost. Unlike typical overlap cladding, the tongue and groove design features thicker timber for a sturdier structure, providing exceptional protection against water ingress. This precision interlocking system guarantees a weatherproof seal, keeping your valuables safe and dry regardless of season.
Innovative Design with Practical Features
Optimised for function and form, the shed’s pent roof design maximises internal headroom and encourages water runoff. You can also customise window placements, allowing you to flood the interior with natural light and reduce the need for artificial lighting during the day. For a glimpse at similar options, explore our 4ft pent sheds — ideal if you need a compact alternative with equally reliable features.
Strength and Stability at Its Core
Every 20ft x 4ft Pent Shed boasts a heavy-duty floor crafted from pressure-treated, tanalised timber planks with sturdy floor bearers that elevate the shed off the ground to prevent dampness and rot. This strong base means you won’t have to worry about storage restrictions — everything fits safely inside, from heavy garden equipment to bulky tools.
- 12mm Swedish Pressure Treated Tanalised Red-Wood Tongue & Groove Shiplap
- Reinforced 38mm x 50mm timber framework throughout roof, floor, and walls
- 18 mm-thick floor boards with elevated bearers for extra moisture protection
- Durable 40kg modified bitumen mineral felt, hand-nailed for longevity
- Galvanised hinges and Brenton padbolts for security
Each shed arrives with comprehensive fixings, felt, and clear instructions, making the build process straightforward for even first-time DIYers.
Premium Timber & Craftsmanship
At Flat Pack Sheds, we insist on using only the finest materials — never inferior chipboards or OSB boards. Our sheds are crafted with precision and care, using fully screwed joints instead of staples to enhance stability during assembly and long-term use. The timber is pressure-treated to resist fungal, insect, and rot damage, ensuring your investment lasts for years.
Customisation and Additional Options
Want to personalise your shed? We offer a wide selection of extras, such as additional doors, windows, or elegant diamond-leaded glass panes, to elevate your garden space’s look and functionality.
Are you ready to elevate your garden storage? The 20ft x 4ft Pent Shed perfectly blends quality, practicality, and design — delivered quickly and assembled easily. Don’t settle for less when protecting your tools and outdoor essentials.
Order your 20ft x 4ft Pent Shed now and experience premium garden storage with Flat Pack Sheds — quality you can trust, delivered fast and free.
Explore more options, including our robust 5ft pent sheds, to find the perfect fit for your garden today.






























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