Alton Westminster Cedar Greenhouse- Aluminum Base

Westminster Cedar Greenhouse

Transform your garden into a vibrant oasis with the Westminster Greenhouse from Alton Cedar Greenhouses. With over a century of experience in creating top-notch garden structures, Alton blends innovation with practicality in every design. The Westminster model showcases the same classic elegance as our Lancing model, but adds a charming half-board cedar bottom for a rustic touch. Ideal for any gardener, this greenhouse not only beautifies your backyard but also offers a sturdy, functional space to nurture your plants.

What Makes Alton a Quality Brand?

• Over 100 years of craftsmanship creating cedar greenhouses
• Alton greenhouses utilize Western Grade 1 (no knots) cedar dipped in a special solution to age better and prevent water absorption
• Aluminum foundation profile raises wood framing 1" from the ground to prevent water related rot
• Mortice / tenon and Tongue / groove wood joints used in appropriate locations to help prevent framing from coming loose over time due to wind pressures
• Designed and manufactured in the UK 

Customize Your Greenhouse with Accessories

Select from a range of sizes that fit your space and gardening requirements. You can also improve your Westminster Greenhouse with staging shelves (offered in 2-slat or 4-slat designs) to keep your plants and tools organized. For a classic touch, consider adding solid cast aluminum cresting for a timeless appearance.

Please Note: Starting 03/15/2025: All Alton Models will arrive at our warehouse fully equipped with Aluminum Bar Capping, Victorian Cresting, and all Shelving. This means that if you are looking for a customized option, either with or without specific features, we can still order it for you, but this could mean a longer wait time. 

The Westminster Greenhouse by Alton beautifully combines aesthetics, durability, and practicality. Whether you're just starting out or have years of gardening experience, this greenhouse will enhance your gardening journey and provide the perfect setting for your plants to flourish.

Specifications 

Glazing: Toughened safety glass with screw in bar clamping (capping)
Frame: Extra strong cedar

10x16

• Length: 16'8"
• Width: 10'9"
• Peak Height: 11'1"
• Sidewall Height: 5'7"
• Area: 179 sq. ft.
• Roof Pitch: 45 degrees
• Doors: 1 Lockable Door with Keys
• Windows: 4 Roof Vents w, 3 Louvre Window
• Window Openers: 4 Automatic (Roof), 3 Manual (Louvre)

10x18

• Length: 18'
• Width: 10'9"
• Peak Height: 11'1"
• Sidewall Height: 5'7"
• Area: 202 sq. ft.
• Roof Pitch: 45 degrees
• Doors: 1 Lockable Door with Keys
• Windows: 5 Roof Vents w, 4 Louvre Window
• Window Openers: 5 Automatic (Roof), 4 Manual (Louvre)

10x20

• Length: 20'10"
• Width: 10'9"
• Peak Height: 11'1"
• Sidewall Height: 5'7"
• Area: 224 sq. ft.
• Roof Pitch: 45 degrees
• Doors: 1 Lockable Door with Keys
• Windows: 6 Roof Vents w, 4 Louvre Window
• Window Openers: 6 Automatic (Roof), 4 Manual (Louvre)

Comes Standard With

• 3mm safety glass with screw in cedar capping
• Wide single door with lock and low threshhold
• Victorian style aluminum guttering with downspout
• Automatic opening roof vents
  10x16(4)
  10x18(5)
  19x20(6)
• Louvre windows
  10x16(3)
  10x18(4)
  19x20(4)

Can Also Add

• Aluminum bar capping
• 2 slat shelf staging
• 4 slat shelf staging
• Victorian cresting

Westminster Greenhouse Manuals