Project Evolution SA is a company specialized in the construction of energy-efficient wooden houses and buildings. With over 20 years of experience and an operational headquarters in Grono (Canton of Graubünden) since 2020, it is organized to operate throughout Switzerland , managing every construction phase: from planning to final delivery. We work with Swiss precision and a rigorous technical approach, focusing on site organization, timeline compliance, and cost transparency. Structures and Building Systems • Wooden structures using X-LAM system with high static and energy performance • Prefabricated eco-friendly walls , with battens, double mineral wool insulation, and breathable finishes • Custom solutions for single-family homes, villas, extensions, elevations , and multi-storey buildings (up to 7 floors) Insulation and Living Comfort • Natural breathable insulation in rock wool or wood fiber • External thermal insulation systems using ecological, high-efficiency materials • Drywall partitions and suspended ceilings , perfectly smoothed and finished • Carefully executed interior finishes: smoothing, leveling, and surface preparation Interior Works and Installations • Supply and installation of high-efficiency windows and doors • Interior wall cladding and partition walls in drywall • Full coordination of technical installations (electrical, plumbing, mechanical ventilation) Sheet Metal and Roofs • Construction of ventilated and waterproof roofs • Custom-made metal sheet works : copper, aluminum, stainless steel • Gutters, flashings, chimney caps, and external finishes with maximum attention to detail Logistics and Material Transport Even the most complex construction sites are no challenge for us: we transport materials using any necessary method, including crane trucks, tractors, helicopters , or special solutions for isolated or hard-to-reach areas. Efficient organization is one of our core values. Why Choose Project Evolution SA • ✅ Over 2,000 projects completed in Switzerland and Italy • ✅ Advanced shell approach , with a single technical point of contact • ✅ Accuracy in installation, hidden details, and site management • ✅ On-time and on-budget delivery, no surprises • ✅ Expertise in eco-construction and certified natural materials • ✅ Solid experience with prefabricated and sustainable buildings Building with wood in Switzerland? Trust Project Evolution SA We create your eco-friendly wooden house, your sustainable building, or your custom project with maximum technical competence and attention to detail. From design to installation – we are by your side at every step. 📍 Active throughout Switzerland – Contact us for a quote or a personalized consultation.

Ich bin sehr zufrieden,von der Offerte bis zum fertigen Einbau der neuen Fenster pervekter Servic. Ich kann die Firma sehr empfehlen.

besten Dank Domi und Team für die angenehme Zusammenarbeit, man fühlt sich bei Euch immer Willkommen und gut betreut, gerne wieder

About us Hintermann & Ruffini Ltd is a new venture, but based on a long-standing, successful past. The young company was founded in 2018 by Stefan Hintermann. He will continue the success story of Giacomazzi & Ruffini Ltd thanks to many years of experience in the timber industry and various further education courses. Our Team We can count on many years of loyal staff. Our motivated, competent employees, who receive regular training, are one of the main reasons for our success. At the moment our team consists of 15 employees, who are led by Stefan Hintermann. In detail: 1 wood construction technician HF, 1 technician - draftsman, one administrative responsible person and 7 carpenters / roofers. Our story The success story started 30 years ago in the Maggiatal. Giacomazzi & Ruffini Ltd was founded in 1988 in Moghegno by Dario Ruffini and is still a successful venture in carpentry and roofing. In 2002 the company moved to Avegno. The wood construction business has grown steadily in the new, generously sized workshop with office and was able to count a large number of architects and private customers among its customers. Since September 1st, 2018, Stefan Hintermann is responsible for the newly founded timber construction company carpentry Hintermann & Ruffini Ltd . An apprenticeship as a carpenter, many years of experience in the timber industry, several years of further training as a timber construction technician and construction management expert are the best prerequisites to continue the success story of Dario Ruffini. OUR SERVICES • Roof • Roofer • Coverage • Tiles • Houses • Roof ridge • Roof control • Coverage control • Waterproofing • Roof repair • Maintenance • Pediment • Roof cleaning • Restoration • Redevelopment • Insulation • Restructuring • Under-roof • Wood • Costruction • Plumber • Tinsmithy • Skylight • Carpenter • Carpentry • Wood construction • Thermal insulation • Velux • Façade • Coibentazione • Prefabricated house • Modular houses • Wooden houses • Top-up's • Coatings • telaio • Eaves • X-lam • Coppi tiles • Eternit • Shed • Warehouse • Gutter • Technical office • Stable • Rustico • Roof truss