Roli GmbH , based in Basel, is a regionally active and specialized service provider focused on leak detection and waterproofing inspections for flat roofs . We support property developers, architects, facility managers, and insurance companies in the reliable analysis and maintenance of flat roof systems – from single-family homes to industrial buildings. With years of experience and the use of advanced technologies, we are a trusted partner for precise, non-invasive leak detection , technically sound inspection methods , and clear, structured documentation . Our guiding principle: Find the root cause – not just treat the symptoms . Our Core Services Flat Roof Leak Detection Using cutting-edge technologies such as moisture sensors, smoke tests, thermography, and electronic pulse systems, we locate weaknesses quickly and accurately – even in complex roof constructions. Waterproofing Integrity Testing For both new and existing buildings, we verify the performance of waterproofing systems before handover or use – with fully documented, protocol-based and independent testing procedures. Roof Inspection with Report We carry out structured condition assessments of flat roofs, including photo documentation and maintenance recommendations – ideal for damage prevention or decision-making in renovations. Expertise Across All Roof Types Experienced in cold roofs, warm roofs, inverted roofs, green roofs, and walkable/drivable roof systems. Who We Work With • Architects & General Contractors – for acceptance tests or quality assurance • Property Managers & Homeowners – for water damage diagnostics, leak assessment or renovation planning • Insurance Companies & Surveyors – for neutral and technical evaluations • Industrial & Commercial Clients – for routine roof checks and safety assessments Locally Rooted – Available Nationwide Our core service area includes Basel, Basel-Landschaft, Aargau, Solothurn, and the Northwestern Switzerland region. Upon request, we are also available throughout Switzerland. Flexibility, short response times, and clear communication are our daily standards. Why Roli GmbH? • Independent & Objective: We don’t sell sealing materials – we identify causes. • Technically Reliable: Use of professional-grade tools and methods • Documented & Transparent: You receive clear inspection reports, including testing protocols if needed • Client-Focused: Personal consultation, transparent process, and fair pricing Roli GmbH – We make flat roofs understandable. A hidden leak? We’ll find it – before it becomes expensive.

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Pitched roofs The traditional roof shapes protect the building permanently from all weather influences. Materials such as clay or concrete tiles, fiber cement, natural slate or metal require not only traditional craftsmanship but also technical knowledge in their application. We would be happy to advise you on this and offer you a solution tailored to your property. Flat roofs The flat roof is particularly popular in modern architecture. Its advantages are better use of space, accessibility (as a terrace or garden) and its storm resistance. With competent advice and good craftsmanship, it fulfills its task perfectly for decades, contrary to many opinions. By greening flat roofs, ecologically valuable open spaces can be reclaimed. Services: For your safety, we recommend our periodic inspection service. This includes: Visual inspection of the roof for damage or loose parts Replacing defective roof material, etc. Checking and cleaning sheet metal connections We would be happy to advise you personally. We look forward to your inquiry.

Lütolf Dach und Wand AG – Your Expert for Roof and Façade Work in Villmergen, Freiamt, Aargau, and Zurich For over 70 years, Lütolf Dach und Wand AG has been your reliable partner for high-quality building envelope services. As the regional leader in flat roof systems and building waterproofing , we offer customized and long-lasting solutions for new constructions , renovations , and refurbishments . Our expertise covers a wide range of services, including pitched roofs , green roofs , sheet metal work , façade construction , scaffolding , and solar energy systems . Founded in 1946 by Xaver Lütolf, the company stands for craftsmanship, quality, and reliability. With a deep understanding of modern and functional roof and façade requirements, we deliver solutions that meet the highest standards. Our flat roof systems ensure effective building waterproofing , protecting your property from weather damage while optimizing energy efficiency. In addition to traditional pitched roofs , we focus on sustainable solutions like green roofs , which are not only visually appealing but also ecologically valuable and energy-efficient. Our skilled craftsmen in sheet metal work provide precise and aesthetically pleasing metal roofing and façade elements, while our façade construction enhances your building's exterior with both protection and style. Another key area of our services is the installation of solar energy systems , allowing you to embrace environmentally friendly and future-oriented energy solutions. Through comprehensive consultation and expert installation, we ensure the optimal use of solar energy for your home or business. Whether for new construction projects , refurbishments , or renovations , Lütolf Dach und Wand AG offers top-quality craftsmanship and professional solutions across the Freiamt , Aargau , and Zurich regions. Rely on our decades of experience and in-depth knowledge to bring your building project to success. Contact us for a comprehensive consultation and benefit from our tailored services, designed to meet your specific needs.

Dachservice 4you GmbH is your reliable partner for roofing services in Zurich and the surrounding area . With over 20 years of experience , we provide professional repairs, new constructions, renovations, and maintenance for pitched and flat roofs . Our range of services includes roof windows, sheet metal and plumbing work , water damage repairs , snow guard systems , wasp control , as well as professional solar cleaning for photovoltaic and solar systems – ensuring clean roofs and maximum performance . We work reliably, efficiently, and personally to protect your roof in the long term and help prevent costly consequential damage . Trust in local quality – we are happy to advise you individually.