For architects aiming to create environmentally harmonious spaces, Oasis Rooftops offers green roof solutions that combine sustainability with design flexibility. As specialists in green roofing, we support projects that redefine urban landscapes and boost environmental value. Whether you’re working on residential, commercial, or mixed-use developments, our green roof systems offer unique advantages that align with both ecological values and urban resilience.
Reduces runoff, mitigating urban flood risks and alleviating pressure on drainage systems.
Green roofs act as natural insulators, reducing energy consumption for cooling in summer and heating in winter.
Provides habitats for pollinators and small wildlife, contributing to urban ecosystem balance.
Plants filter airborne pollutants, improving overall air quality within urban settings.
Transforms unused rooftops into visually appealing, functional spaces.
Ideal for Lightweight and Low-Maintenance for Modern Designs
Extensive green roofs offer a shallow growing medium with drought-tolerant plants like sedum and grasses. These roofs are lightweight, cost-effective, and need minimal maintenance.
With a deeper substrate, intensive green roofs support a diverse plant range, including trees, shrubs, and flowers. These garden-like spaces can include pathways and seating areas, providing both aesthetic and functional outdoor spaces.
Ideal for Integrating Renewable Energy with Green Roofing
This hybrid system combines solar panels with a green roof, offering dual sustainability benefits. Vegetation helps cool solar panels naturally, therefore improving energy efficiency.
Also known as Brown roofs, these eco-roofs use varied growing mediums to encourage natural plant colonisation, fostering habitats for local wildlife. Natural materials like pebbles, logs, boulders and branches create an inviting environment for native flora and fauna.
When incorporating green roofs, several factors can impact design and functionality:
Green roofs add weight to a structure, and it’s crucial to assess the building’s load-bearing capacity early in the design phase, especially when considering roof pitch and available space.
A pitched roof under 10 degrees is typical for green roofs, where a minimum slope of 1:60 supports natural drainage.
In terms of load, extensive green roofs generally supports between 50-200kg per square metre, while intensive green roofs, due to their greater plant diversity and depth, can bear 390-730kg per square metre. Loads should always account for saturation weight.
Extensive green roofs are ideal for lightweight or low-rise structures, while intensive systems may require robust steel or concrete support, particularly if the design includes large plants, trees, or amenity spaces for public use.
Green roofs require reliable waterproofing to protect the roof structure from water damage and moisture build-up. A specialised waterproof membrane protects the underlying structure from water damage, while an integrated drainage layer manages water flow, reducing the load during heavy rainfall and aiding stormwater management. Additionally, drainage solutions should allow excess water to drain while retaining enough moisture for plant health, striking a balance between hydration and water protection. For compliance and longevity, it’s advisable to consult local regulations, especially for larger projects, as extensive drainage management may be required.
Green roofs significantly reduce stormwater runoff by storing water in the substrate, which plants then absorb and return to the atmosphere. This can alleviate pressure on city drainage systems, reduce flood risks, and help to purify rainwater by filtering out pollutants.
Extensive green roofs typically meet stormwater management regulations and generally don’t require irrigation beyond the first 4-6 weeks of establishment.
Intensive green roofs, which include deeper substrates and water-dependent vegetation, may require ongoing irrigation. In some cases, moisture blankets or geotextile membranes are specified to support plant hydration.
Green roofs provide natural insulation, helping to regulate building temperature by preventing heat gain in summer and retaining warmth in winter. This reduces the need for artificial heating and cooling, enhancing energy efficiency. The added insulation can be a significant asset in urban areas, helping to lower operational costs while contributing to sustainable energy goals.
Designing a green roof may support planning consent, particularly for developments with a focus on sustainability. In certain cases, green roofs can be retrofitted without specific permissions, but consulting with local planning authorities is advised if there are uncertainties. Gaining approval for green roof designs can demonstrate a commitment to ecological responsibility, making it a favourable consideration in planning applications.
The level of maintenance varies with roof type. Extensive green roofs are typically low-maintenance, making them ideal for clients with limited upkeep requirements. Intensive green roofs, on the other hand, demand more care, especially if they include recreational spaces or diverse plant types. Additionally, if the roof will be accessed frequently, pathways or structural reinforcements may be needed to handle foot traffic.
Fire resistance is an important safety consideration in green roof design. Some plants and materials can act as fire retardants, while others may pose a fire risk, particularly in dry climates. Choosing appropriate, fire-resistant vegetation and materials can help ensure compliance with safety regulations, especially in commercial or multi-story buildings.
Green roofs provide flexible design opportunities to align with aesthetic and functional goals. They can transform rooftops into usable outdoor spaces, enhancing views and creating recreational areas. This versatility is especially appealing for residential and commercial buildings aiming to blend green spaces with urban structures. Thoughtful plant selection can enhance year-round visual appeal while supporting environmental functionality.
Oasis Rooftops is an established leader in green roofing solutions, offering architects a trusted partnership to achieve sustainable and high-performing designs.
Oasis Rooftops is led by Kalpesh Raval, a Lantra-certified professional and Skilled Worker CSCS cardholder specialising in green roof installation.
As a proud GRO Contractor Member, Oasis Rooftops is committed to dedicated to best practices and quality standards within the green roof industry, ensuring that each project we undertake aligns with the rigorous standards of the Green Roof Organisation (GRO)
With extensive experience in green roof design and installation, we assist architects through each stage—from planning and design considerations to installation and maintenance.
We offer a full range of green roof systems, from lightweight, low-maintenance extensive roofs to complex, biodiverse intensive systems, customised to meet the unique needs of each project.
Our green roofs are designed not only for aesthetic appeal but also to support biodiversity, improve air quality, and contribute to urban sustainability.
Oasis Rooftops is dedicated to providing architects with reliable, ongoing support to ensure each green roof performs optimally over its lifespan.
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Oasis Rooftops is here to support architects in creating sustainable, resilient designs.
From consultation to installation, our team provides the expertise needed to make green roofing a successful component of your project.
