Green roof design

Green Roof Design: See a Living Roof on Your Home

A green roof is a roof covered in plants: a thin carpet of sedum, a wildflower meadow or a full roof garden with planters and paths. Homeowners search for green roof designs for flat-roofed extensions, garages, sheds and modern houses. This AI green roof design tool starts from a picture: upload a photo of your roof from the street or the garden, a sketch or a clay model, and ArchitecturesAI renders it in the same view; then describe the planting, the edging and the paths in a sentence. The result is an idea picture of the outside. It is not a structural check, a planting plan or a quote.

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Sign in with Google or email to render. New accounts get 2 free renders (watermarked); free renders are not available in India on this site.

The back of a brick house with a single-storey flat roof rear extension with a black felt roof edge, white glass doors, a patio with a table and chairs and a lawn — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a flat-roofed rear extension, not a real extension. Edit prompt used: "Change ONLY the roof: cover the flat roof of the single-storey extension with a green sedum roof: a low carpet of green, red and yellow sedum plants over the whole roof, a narrow gravel strip along the edges and a thin aluminium edge trim. Keep the house, the extension walls, the glass doors, the patio, the lawn and the camera angle exactly the same." What followed it: green, red and yellow sedum over the whole extension roof with a thin aluminium edge trim; the house, the extension walls, the glass doors, the patio and the lawn stayed. What differs from the prompt: the plants sit as a raised mound above the edge rather than a low carpet, and the gravel strip along the edge is not visible. We ran this one once.

The same extension with its roof covered in green, red and yellow sedum plants and a light aluminium edge trim, with the same doors, patio and lawn — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a flat-roofed rear extension, not a real extension. Edit prompt used: "Change ONLY the roof: cover the flat roof of the single-storey extension with a green sedum roof: a low carpet of green, red and yellow sedum plants over the whole roof, a narrow gravel strip along the edges and a thin aluminium edge trim. Keep the house, the extension walls, the glass doors, the patio, the lawn and the camera angle exactly the same." What followed it: green, red and yellow sedum over the whole extension roof with a thin aluminium edge trim; the house, the extension walls, the glass doors, the patio and the lawn stayed. What differs from the prompt: the plants sit as a raised mound above the edge rather than a low carpet, and the gravel strip along the edge is not visible. We ran this one once.

What a green roof is

Green roof suppliers, council guidance and the green roof galleries on Houzz describe two main kinds:

Extensive green roofs: a thin layer of growing medium with low, tough plants such as sedum. They are light and need little care, and suit extensions, garages and sheds.
Intensive green roofs: deeper soil with shrubs, lawns, paths and sometimes small trees. This is a roof garden and needs a stronger roof and regular care.
Both sit on a waterproof layer, a root barrier and a drainage layer, usually on a flat or low-pitched roof.
People choose them for wildlife, slower rainwater run-off, insulation and a better view from upstairs windows.
A green roof adds weight, so a structural engineer should check the roof before you build.

How to try a green roof design with ArchitecturesAI

In the editor above, the mode is Render Architecture, the type is Residential and the style is Sustainable. This mode has no prompt box: you start from an image.
Under Select Image, upload a JPG or PNG: a daylight photo of your flat roof, extension or garage taken from the garden or the street, or a sketch or a clay model.
Click Generate. Free accounts can only use Low quality (Medium and High are marked PRO). Sign in with Google or email when asked.
To steer the result, click Edit Image on it (the box is called Edit Instructions) or use Custom Action, and describe the plants, the edge trim, the paths and what must stay the same and what must stay the same. Each edit is another render and uses credits. Run it a few times, since every result differs.
The three examples below ran directly on our image model with the written instructions shown. They did not go through the editor above, so your own results will differ.

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Sedum on a flat-roofed extension

A single-storey rear extension is the most common place for a green roof at home. Here the planting covered the roof and the house stayed the same.

A wildflower garage roof and a roof garden

A garage roof can take a meadow mix, and a modern house can take planters on a balcony or terrace. The captions note where the planting differs from a real build.

A detached single garage with a flat roof in grey felt, white rendered walls, a white garage door, a driveway and a hedge — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a flat-roofed garage, not a real garage. Edit prompt used: "Change ONLY the roof: turn the flat garage roof into a green roof with wildflower meadow planting: grasses, sedum and small flowers growing across the whole roof, a timber edge board, and nothing else changed. Keep the garage walls, the garage door, the driveway, the hedge and the camera angle exactly the same." What followed it: grasses, sedum and small flowers across the whole roof with a timber edge board; the garage walls, the door, the driveway and the hedge stayed. What differs from the prompt: the planting looks taller and denser than a thin green roof build-up would usually hold. We ran this one once.

The same garage with a wildflower meadow of grasses, sedum and purple flowers on its roof behind a timber edge board — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a flat-roofed garage, not a real garage. Edit prompt used: "Change ONLY the roof: turn the flat garage roof into a green roof with wildflower meadow planting: grasses, sedum and small flowers growing across the whole roof, a timber edge board, and nothing else changed. Keep the garage walls, the garage door, the driveway, the hedge and the camera angle exactly the same." What followed it: grasses, sedum and small flowers across the whole roof with a timber edge board; the garage walls, the door, the driveway and the hedge stayed. What differs from the prompt: the planting looks taller and denser than a thin green roof build-up would usually hold. We ran this one once.

A modern two-storey white house with a flat roof, large windows, a bare concrete balcony across the first floor and a lawn — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a modern flat-roofed house, not a real house. Edit prompt used: "Turn the roof of the lower wing into a planted roof garden: deep planters with shrubs and small trees, a green lawn patch, timber decking paths, a glass balustrade along the edge; on the main roof add a sedum green roof. Keep the house shape, the walls, the windows, the lawn and the camera angle exactly the same." What followed it: planters with shrubs, a glass balustrade along the edge and planting on the main roof; the house shape, the walls, the windows and the lawn stayed. What differs from the prompt: the house has a first-floor balcony rather than a lower wing, so the planters went there, and there is no timber decking or lawn patch on the roof. We ran this one once.

The same house with planters of shrubs and grasses on the first-floor balcony behind a glass balustrade, and flowering plants growing along the main roof — An AI-generated pair made with our own image model. The "before" is an AI-drawn stand-in for a photo of a modern flat-roofed house, not a real house. Edit prompt used: "Turn the roof of the lower wing into a planted roof garden: deep planters with shrubs and small trees, a green lawn patch, timber decking paths, a glass balustrade along the edge; on the main roof add a sedum green roof. Keep the house shape, the walls, the windows, the lawn and the camera angle exactly the same." What followed it: planters with shrubs, a glass balustrade along the edge and planting on the main roof; the house shape, the walls, the windows and the lawn stayed. What differs from the prompt: the house has a first-floor balcony rather than a lower wing, so the planters went there, and there is no timber decking or lawn patch on the roof. We ran this one once.

What the AI keeps and what it may change

Usually kept: the camera angle, the walls, the doors and the garden.
Often different from what you asked: how tall and dense the plants are and where planters go.
Not shown in a picture: the waterproofing, the drainage and whether your roof can carry the weight.
Never produced: floor plans, structure, cost estimates or approval drawings.

Working on a flat roof or extension?

The flat roof house page covers flat roof designs, the house extension page shows new extensions, and the garden room page covers garden buildings that often get green roofs.

Free tier and plans

You need a free account to render. New accounts get 2 free renders, and free renders carry a watermark. In India this site does not include free renders, so a paid plan is needed there. Weekly, monthly and yearly plans for more renders without the watermark are on the pricing page.

The extension, the garage and the house on this page are AI-drawn stand-ins, not real. Each example was run directly on the model, not through the tool above.

Frequently asked questions

What is a green roof?

A roof covered in plants on top of a waterproof layer, a root barrier and a drainage layer. It can be a thin layer of sedum or a deeper roof garden with shrubs and paths.

Can I see a green roof on my extension or garage?

Yes, as an idea picture. Upload a photo where the roof is visible, render it, then use Edit Image to ask for sedum, wildflowers or planters. A picture cannot check the roof structure, so ask an engineer before building.

Is there a text box in the editor?

The prompt box exists only in Architecture Generator mode. The editor above opens in Render Architecture, where you upload an image and change the result with Edit Image (Edit Instructions) or Custom Action.

Is it free to try?

Yes. After you sign in, a new account gets 2 free renders with a watermark, in Low quality. In India this site does not include free renders. Paid weekly, monthly and yearly plans are listed on the pricing page.

See a green roof on your home

Upload a photo of your extension, garage or flat roof, compare a few green roof versions, and take the best one to your builder. Your first 2 renders on a free account are on us.

Upload your roof photo