Large Sheds

18 products
  • Duramax Sheds Durable Quality
  • Duramax Sheds Direct Factory Pricing
  • Duramax Sheds Easy Assembly
  • Duramax Sheds Friendly Service

Spacious and Durable Large Sheds for Every Outdoor Need

Looking for reliable large sheds to upgrade your outdoor space? Whether you need secure storage, a workshop, or even a livable outbuilding, Duramax offers a wide variety of large sheds for sale built to withstand the elements and deliver long-lasting functionality. With rugged materials like steel, insulated panels, and reinforced vinyl, our large sheds are engineered for performance, style, and convenience.

Modern Glass Rooms for Stylish Outdoor Living

If you’re envisioning more than just storage, our Duramax Garden Glass Rooms offer a unique solution beyond traditional large sheds. Available in 10x10 and 13x10, these sleek structures are built with galvanized steel walls, fire-retardant PU foam insulation, and tempered glass panels. Whether used as a home office, playroom, relaxation retreat, or ADU, the glass room delivers natural light, year-round comfort, and unmatched visual appeal. With rain gutters, insulated panels, a lockable door, and easy DIY assembly, this is more than a large storage shed—it’s a livable space that elevates any backyard. Many homeowners customize these rooms by adding power, lighting, and plumbing to create fully outfitted spaces for work, play, or extended living.

Big Sheds for Practical Storage and Utility

Our big sheds like the Woodbridge Plus 10.5x10 and 10.5x13 offer dependable, low-maintenance outdoor storage. Made from fire-retardant vinyl (resin/plastic) with metal-reinforced wall columns and a galvanized foundation kit, these large plastic sheds are resistant to rust, rot, mildew, and pests. Features like gable vents, shatterproof windows, and lockable handles make them excellent choices for anyone looking to buy large shed kits that are both tough and easy to assemble in just a few hours.

Heavy-Duty Large Metal Sheds for Vehicle and Equipment Storage

For vehicle owners or those with serious storage demands, our large metal sheds—like the 12x20 and 12x26 Imperial Metal Garages—offer strength, security, and capacity. These extra large sheds feature wide roll-up doors, lockable side access, ridge-reinforced walls, and support up to 20 lbs/sqft of snow. Built from galvanized steel, they’re made for durability and backed by a 10-year warranty. Whether you’re storing equipment or creating a covered workspace, these large outdoor sheds deliver.

Insulated Buildings for Multi-Purpose Use

Need more than just storage? Our flat roof and gable roof insulated buildings, available up to 22x10, are perfect prefabricated large shed kits for offices, workshops, shelters, or secure storage. With thick polyurethane insulation, galvanized steel walls, and modular expansion options, these buildings are highly adaptable and DIY-friendly. Customers often run electrical and plumbing lines underneath or through the walls, turning these structures into fully usable spaces that go far beyond traditional large storage sheds.

Not sure if you need something this big? Browse our small sheds or medium sheds. You can also explore our full range of storage sheds to find the perfect fit for your needs.

Large Shed FAQs

Can I add water, electricity, and an AC unit to the Duramax Glass Room and other insulated buildings?

Yes! Customers frequently add water and electricity to the Duramax Glass Room and other Duramax insulated buildings. You can run the electricity and water lines underneath the building and through the metal foundation kit, or cut directly through the walls. Additionally, the tough-built walls can easily support a mounted air conditioning unit.

What are the insulation R-values for the Duramax Glass Rooms and Insulated Buildings?

The Duramax Glass Rooms have an R-value of 10 for the walls and 13 for the roof. Other Duramax Insulated Buildings have have an R-value of 5.9 for the walls and 6.9 for the roof.

Is space required around the concrete pad that my Duramax large shed will be built on?

The recommended dimensions for the concrete pad itself can be found within the installation manuals. We also recommend leaving 6”-12” around the concrete pad to make it easy to move about the large shed.

Do Duramax shed windows open?

The windows do open on the glass rooms. Otherwise, the Duramax shed windows do not open.

Questions?

Do you still have questions or need help choosing the right shed? Contact Duramax Sheds Online by calling or texting us at 844.900.2050 during regular business hours. You can also email us anytime at support@duramaxshedsonline.com. We're here to help!