Glass Greenhouse | The Retreat
Glass Greenhouse | The Retreat
Description
The Retreat — A Lean-To Glass Greenhouse That Saves Your Space
The Retreat isn't just a greenhouse — it's a true glass garden built right into the side of your home. Designed to lean against a wall, a house façade, a garage, or a patio, this lean-to greenhouse gives you a genuine growing space without giving up your whole backyard.
If you've been searching for an attached greenhouse that actually looks intentional — not just a lean-to kit bolted onto a wall — The Retreat is built to blend into your home's architecture while giving your plants (and you) a bright, sheltered space to thrive.
Built to Lean, Built to Save Space
The Retreat's single-slope design rests against a load-bearing wall, making it the ideal solution for narrow side yards, a spot along your house's façade, or a corner at the back of a courtyard. You get real growing space — without eating into the rest of the garden.
A Structure Built to Last
Every Retreat greenhouse is built on reinforced high-strength aluminum profiles in matte black, joined with reinforced connectors for a stable, long-lasting frame.
Double Sliding Doors, Fitted for Any Wall
The Retreat's double sliding doors open with a single motion and tuck neatly into the design — no swing radius, no obstruction to foot traffic. They fit as cleanly against a house wall as they do alongside a garage.
Abundant Natural Light
4mm tempered safety glass, for healthier plants and a space that feels like a real glass garden rather than a garden shed. It's the clarity of a true glasshouse, with the calm of a private cocoon against your wall.
Ventilation and Drainage — Included
To regulate temperature and let your plants breathe, a roof vent window is included at no extra cost (availability depends on size). The integrated rain gutter with built-in drainage comes standard too, protecting your foundation without an upsell.
More Than a Greenhouse
The Retreat is an investment in your passion for gardening, and a genuine relaxation space in its own right — an exceptional garden object, close to nature, that adds value to your home all year long.
What's Included
- Tempered-glass greenhouse with sliding door and roof window
- Base kit for secure anchoring to soil or concrete
- All fixings, glazing clips, and a detailed installation manual
Compatible with extra sliding doors, roof decoration, and automatic window openers.
Frequently Asked Questions
What is a lean-to greenhouse? A lean-to greenhouse, like The Retreat, is a greenhouse with a single sloped roof that attaches directly to an existing wall — typically a house, garage, or fence — sharing that wall as one side of the structure instead of standing free in the yard.
Can The Retreat be attached to a garage or a fence, not just a house? Yes. The Retreat is designed to lean against any load-bearing wall — a house façade, a garage wall, or a boundary wall — making it flexible for narrow side yards and awkward corners.
Does The Retreat include roof ventilation? A roof vent window is included at no extra cost, depending on size, along with an integrated rain gutter and drainage system.
Is there a wood-finish option? Yes. The Retreat is available with an optional Accoya wood cladding finish for a warmer, more residential look, in addition to the standard matte black aluminum frame.
TECHNICAL SPECIFICATIONS
Access & equipment :
- Sliding door (single or double depending on width)
- Roof window included
- Integrated aluminum base for secure installation
Included in the kit :
- Tempered-glass greenhouse with sliding door and roof window
- Base kit for secure anchoring to soil or concrete
- All fixings, glazing clips, and detailed installation manual
Compatibility & options :
- Compatible with additional sliding doors
- Roof ventilation accessories and decorative roof elements
- Automatic window openers available as options
SHIPPING & RETURNS
Free & Insured Shipping
Every order is shipped free of charge and fully insured, ensuring your greenhouse arrives safely at your home.
Processing & Delivery Time
Orders are typically prepared and dispatched within 1–3 business days. Estimated delivery time is 70–80 business days after dispatch. Delivery dates are estimates and may vary depending on production schedules, freight timelines, customs clearance, carrier operations, or other logistical factors. If your estimated delivery window changes, we'll notify you by email. View our Shipping Policy.
Returns & Refunds
You have 30 days after delivery to request a return, exchange, or refund in accordance with our return policy. View our Return & Refund Policy.
Assembly Guide
The complete step-by-step assembly guide for a smooth, hassle-free
Discover
Our Glass greenhouses in motion
Living spaces designed to blend elegantly into your everyday life.
What's included in your shipment
The number of roof windows depends on the size you select.
Set up by two, in less than 5 days
No expertise needed. Your greenhouse comes with step-by-step illustrated instructions and only requires common household tools.
Prepare the base
Level the surface, set the frame and anchor it firmly to the ground.
Assemble the structure
The uprights and roof sections click and screw together easily.
Install the glazing
Tempered glass panels and rubber seals are set into place securely.
Doors & windows
Hang the doors and install the opening windows. Your greenhouse is ready.
A greenhouse for every season
From the first seedlings of March to the harvests of December, your greenhouse is with you all year long.
Start your seedlings early, sheltered from the last frosts.
Tomatoes, herbs and flowers thriving in full abundance.
Extend your harvests, protected from wind and rain.
A green refuge, even under the snow.
We started PrimeGreenhouses to fix a simple problem: most greenhouses don't hold up.
At PrimeGreenhouses, our mission is clear: to help every gardener grow more, all year round, in a space built to last. Today, we design robust greenhouses built to withstand the toughest conditions and stand the test of time.
Every greenhouse is the result of rigorous work, using high-quality materials that combine strength and beauty, for hobby gardeners and seasoned growers alike. Our collection is crafted with the greatest care, and each model is made to order — so you can start planning your next growing season with confidence, knowing your greenhouse is built specifically for you.
You might also like our other greenhouse models...
Everything you need to know before ordering
Answers to the most common questions about our glass greenhouses.
No full concrete slab required. The greenhouse sits on a flat, stable surface with the four corners anchored - ideally set in concrete. Concrete footings or pads are also an option, especially in very windy areas.
Not at all. The greenhouse is designed to be assembled by two people in 2 to 3 days using common tools and illustrated step-by-step instructions.
Yes. The reinforced aluminum structure and tempered safety glass are built for tough conditions. In the event of a storm, simply close all doors and windows and clear heavy snow from the roof after snowfall.
Yes. Tempered safety glass is significantly more impact-resistant than standard horticultural glass. If it does break under extreme impact, it shatters into small, non-sharp pieces - making it much safer and more durable, especially against hail.
Maintenance is minimal. The aluminum frame does not rust and wipes clean with soapy water. The glass panels wash like standard windows, inside and out, to keep light transmission at its best throughout the seasons.
Each greenhouse is prepared to order. Orders are typically processed and dispatched within 1–3 business days, and the estimated delivery time is 70–80 business days after dispatch. Shipping is free, tracking is included, and our team is available for any questions about your delivery.
We make it easy for you
Available in English or Spanish