14 Mar MAU WEST CASE STUDY: Waterproofing the Green Roof for Gorilla Conservancy, Rwanda
Building Waterproofing Excellence in Rwanda – Waterproofing the Gorilla Conservancy’s Green Roof
At Mau West Company Ltd, our mission is to deliver innovative, sustainable solutions that redefine construction standards—our “Building Waterproofing Excellence” promise in action. One of our proudest achievements was waterproofing the flat roof of the Ellen DeGeneres Campus of the Dian Fossey Gorilla Fund in Rwanda (https://gorillafund.org/ellencampus/), a facility dedicated to gorilla conservation and education. This roof, designed as a green roof, presented unique challenges and opportunities, which we met with expertise and cutting-edge materials. Here’s how we transformed this project into a model of durability, sustainability, and environmental harmony.
The Challenge: A Green Roof
The Gorilla Conservancy’s Ellen Campus, located near Volcanoes National Park, is a beacon of conservation and eco-conscious design.
Its flat roof serves as a green roof, supporting vegetation that enhances biodiversity, reduces heat, and improves air quality. However, green roofs demand robust waterproofing to prevent leaks into the building below, especially in Rwanda’s rainy climate. The roof needed to withstand water pressure, support plant growth, and remain lightweight to avoid structural strain. Our task was clear: deliver a solution that ensured long-term protection while aligning with the campus’s sustainability goals.
For real estate developers, architects, and engineers, this project highlights the growing demand for green roofs in modern construction. These systems are no longer a luxury—they’re a necessity for sustainable urban development, offering insulation, stormwater management, and aesthetic appeal. Our work at the Gorilla Conservancy showcases how to execute such projects with precision.
Our Solution: A Multi-Layered Approach
To meet the project’s demands, we implemented a comprehensive waterproofing and green roof system. Here’s a step-by-step breakdown of our process:
- Dual-Layer APP Waterproofing
We began by torching two layers of Atactic Polypropylene (APP) membranes from Debigurm, Belgium—a 3mm layer followed by a 4mm layer, both plain APP. APP membranes are renowned for their durability, flexibility, and resistance to UV rays and weathering. Torching these layers ensured a seamless, watertight seal across the flat roof. The 3mm layer provided a robust base, while the 4mm layer added extra thickness for enhanced protection. This dual-layer approach is critical for green roofs, where water retention from soil and plants increases the risk of penetration. For contractors and developers, this demonstrates how layered systems can extend a roof’s lifespan and reduce maintenance costs. - Drainage Layer and Geotextile Installation
Next, we installed a drainage layer paired with a geotextile fabric. The drainage layer, typically a perforated mat or gravel-based system, channels excess water away from the roof, preventing pooling that could compromise the waterproofing or overload the structure. The geotextile, a permeable fabric, acts as a filter, keeping fine particles from clogging the drainage while allowing water to pass through. This step is vital for engineers designing green roofs, as it balances water retention for plants with structural safety—a key consideration as green roofs trend upward in commercial and residential projects. - Growing Media and Soil Application
With drainage in place, lightweight growing media was added—a specialized blend designed to support plant growth while minimizing weight. This layer reduces the load on the roof compared to traditional soil, a critical factor for architects ensuring structural integrity. Over the growing media, we added a thin layer of soil tailored to the native plants selected for the roof. This approach not only supports the green roof’s ecological goals but also aligns with the trend toward lightweight, efficient construction materials, offering landlords and developers a cost-effective way to integrate sustainability. - Planting for Sustainability
Finally, we planted native vegetation suited to Rwanda’s climate. These plants enhance the roof’s environmental benefits—cooling the building, managing stormwater, and supporting local biodiversity. For agents marketing eco-friendly properties, this green roof adds a compelling selling point, appealing to tenants and buyers who prioritize sustainability. The plants thrive thanks to the underlying system, ensuring the roof remains functional and vibrant.
The Results: Excellence in Action
The completed green roof at the Gorilla Conservancy is a testament to Mau West’s waterproofing expertise. The APP membranes have provided a leak-free foundation, protecting the campus’s interior spaces. The drainage and geotextile layers ensure proper water management, while the growing media and plants create a thriving ecosystem. This project not only safeguards the building but also contributes to the campus’s mission of conservation and education—a perfect blend of form and function.
For our target audience, the results speak volumes:
- Real Estate Developers: A durable, low-maintenance roof increases property value and reduces lifecycle costs.
- Landlords: Green roofs attract eco-conscious tenants, boosting occupancy rates.
- Architects: The design integrates sustainability with aesthetics, meeting modern standards.
- Contractors: Our streamlined process ensures efficient installation without compromising quality.
- Engineers: The system balances structural demands with environmental benefits.
- Agents: A unique feature like this enhances marketability.
Trends and Opportunities
This case study reflects broader industry shifts. Green roofs are surging in popularity, driven by urbanization and climate concerns. Additionally, sustainability is no longer optional—clients demand eco-friendly designs that lower energy costs and meet regulatory standards. For Mau West company, this project opens doors to similar initiatives, positioning us as leaders in green construction.
Conclusion: Partnering for Construction Excellence
The Gorilla Conservancy green roof is more than a project—it’s a blueprint for building excellence. At Mau West, we combine advanced materials, expert installation, and a commitment to sustainability to deliver results that stand the test of time. Whether you’re a developer planning a commercial complex or an architect designing an eco-friendly residence, we’re here to help you achieve your vision.
To learn more about our waterproofing solutions and flooring systems, reach out to us:
Email: info@mauwest.co.ke
Call: +254 721 766 847
Visit Us: KCB Building, Enterprise Road, Industrial Area, Nairobi
Mau West Company Ltd — Your trusted construction partner.
