About Our Elite Kensington 6ft Wide Lean to Greenhouses
The Elite Kensington 6ft Wide lean to greenhouse range offers a practical solution for UK gardeners working with limited wall space. As part of our premium Elite Greenhouses collection, these structures are designed and manufactured in Britain. They attach securely to south-facing walls, creating a microclimate typically 5–7°C warmer than freestanding models. The 6ft 3" width fits neatly along most residential walls whilst the customisable length (from 4ft to 20ft) allows you to match your available space exactly.
Why We Chose This Range
“We curating the Elite Kensington 6ft as our top recommendation for serious kitchen gardeners. Most lean-tos are ‘reach-in’ structures, but at 6ft wide, the Kensington is a ‘walk-in’ greenhouse. We chose this model because it shares the same Core-Vect technology principles as Elite's storm-rated freestanding ranges. For a structure with this much surface area against a house wall, the bar-capping system is essential—it prevents the glass-chatter and wind-lift common in cheaper, clip-held lean-tos.”
— Matt, Founder of Greenhouse StoresEvery model in this range features a robust Aluminium Greenhouse frame with built-in guttering, a low-threshold entrance that eliminates tripping hazards, and a 7ft 10" ridge height providing ample headroom. You'll find single sliding door access with a 6ft shelf included as standard. The Elite Kensington 6x8 Lean to Greenhouse remains our most popular size for suburban gardens, though the Elite Kensington 6x10 Lean to Greenhouse provides 33% more growing space for serious vegetable growers.
Authority Comparison: Kensington 6 vs. Kensington 4
| Feature | Elite Kensington 6 | Elite Kensington 4 |
|---|---|---|
| Depth | 6ft 3" | 4ft 3" |
| Internal Workflow | Walk-in (Double Staging) | Reach-in (Single Staging) |
| Air Volume | Very High (Thermal Stability) | Standard |
| Glazing Support | Bar-Capping Standard | Bar-Capping Standard |
| Best For | Professional Production | Narrow Side Passages |
Key Features of the Kensington 6ft Range
Frame & Construction
- 20 Year Elite Warranty for peace of mind.
- Space-Saving Design: 6ft 3" width perfectly suited for narrow patios and side returns.
- Durable Finish: Powder-coated options in 10 standard colours (including Olive Green and Anthracite Grey) or standard milled aluminium.
- Weather Ready: Integral guttering directs rainwater away, and high-tensile stainless steel bolts resist corrosion.
🔧 Matt's Installation Tip: The "Load-Bearing" Foundation
The Kensington 6ft is a heavy-duty structure, especially when fitted with 4mm toughened glass. A common mistake is installing it on standard decorative patio slabs. Over time, the weight of the frame plus saturated compost staging can cause these slabs to tilt toward the garden, pulling the greenhouse away from the wall.
I always recommend a 100mm concrete sub-base or ensuring your slabs are laid on a full mortar bed. When anchoring, use M6 x 75mm masonry expansion bolts into the brickwork. At this 6ft width, the roof glass acts like a massive wing; those heavy-duty fixings are what ensure your 20-year warranty remains valid during a gale. Read our full base guide here.
Glazing & Ventilation
- Glazing Choices: Select from 3mm horticultural glass, 4mm toughened safety glass, or 6mm polycarbonate.
- Airflow: Minimum 1 roof vent per 8ft of length plus a standard 5-blade louvre vent for essential cross-ventilation.
- Safety Upgrade: We highly recommend the toughened glass upgrade for family gardens; it is 5–7 times stronger than standard glass.
Access & Interior
- Easy Entry: Elite's signature low-threshold base allows easy wheelbarrow access.
- Working Height: High eaves and a 7ft 10" ridge accommodate tall crops like tomatoes easily.
- Included Storage: A 6ft aluminium shelf is included as standard.
Choosing Your Size and Glazing
Size Selection Strategy
The 6ft width remains constant — your decision centres on length. A 6x8 model provides 48 sq ft (enough for 12–15 tomato plants), whilst stepping up to a 6x12 delivers 72 sq ft — a 50% capacity increase for a modest price uplift. If 6ft is too deep for your path, view our narrower 4ft Wide Lean to Greenhouses.
Glazing Decision Framework
- Horticultural Glass: The budget-friendly option, transmitting 90% of light. Best for quiet corners away from play areas.
- Toughened Safety Glass: Meets BS EN 12150 standards. It doesn't crack dangerously if broken, making it essential for peace of mind in family homes.
- Polycarbonate: Twin-wall construction offers better insulation, retaining heat overnight, though it has slightly lower light transmission (approx. 82%).
💡 Tip: If your Kensington will sit on a south-facing wall, add an extra roof vent or louvre for mid-summer cooling — the lean-to microclimate can run 5–7°C warmer than freestanding greenhouses.
Customisation & Accessories
While the standard Kensington is well-equipped, most gardeners add Greenhouse Accessories to maximise productivity.
- Ventilation: Add automatic vent openers that trigger at 18–20°C so your plants never overheat when you are at work.
- Staging: The included shelf is a great start, but adding genuine Elite diamond Greenhouse Staging can increase your usable growing surface by up to 85%.
- Rainwater Collection: Optional kits connect standard downpipes to the integral gutters, allowing you to fill water butts with preferred rainwater.
Installation & Base Requirements
Wall Suitability Assessment
Lean-to greenhouses must be attached to solid masonry walls (brick, stone, or rendered block). Timber-clad walls usually require reinforcement behind the cladding. The structure transfers significant weight to the wall, so ensure your pointing is sound.
Base Construction
A level base is critical for the low-threshold door to function correctly. We recommend either 100mm reinforced concrete or paving slabs laid on a compacted sub-base. The base must extend 50mm beyond the greenhouse footprint. For full details, read our guide on How to Build a Greenhouse Base.
Frequently Asked Questions
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Can I fit staging on both sides of a 6ft lean-to?
Yes. The 6ft 3" width allows you to install 2ft wide staging along the house wall and 18-inch staging along the front glass, leaving a comfortable central path. This makes it twice as productive as the 4ft wide model.
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Is the 6ft Kensington wind resistant?
Absolutely. Because it uses Elite's bar-capping system (which clamps the glass) and is anchored directly to a masonry wall, it is significantly more stable in high winds than a freestanding greenhouse of equivalent size.
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Do I need a floor-level base plinth?
We highly recommend the 5-inch Elite Base Plinth if installing on a patio. It provides the necessary height for the low-threshold door to operate smoothly and provides a rigid anchoring point for the frame.
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What is the difference between horticultural and toughened glass?
Horticultural glass is standard 3mm glazing. Toughened safety glass is treated to be much stronger and, if broken, crumbles into safe granules rather than dangerous shards. We always recommend toughened glass for lean-tos situated near house doors or paths.
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Can I install this on decking?
It is possible, but the decking must be heavily reinforced to take the weight (approx 45–60kg per linear metre) and perfectly level. Concrete or paving is generally preferred for long-term stability.
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Does the price include delivery?
Yes, we offer free delivery to most UK mainland addresses. Vehicles are specifically designed for transporting glass to minimise breakage risk.
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How many roof vents do I need?
Standard models include 1 roof vent per 8ft of length (e.g., a 6x12 has 2 vents). For hotter south-facing walls, we recommend adding at least one extra vent or louvre to aid cooling in mid-summer.
✅ Ready to grow big in a narrow footprint? Explore Elite Kensington 6ft Wide Lean-To options, or call 0800 098 8877 for personalised advice on sizing, glazing, and installation. Free UK mainland delivery on all models.