The company Alfredo Polti SA, a typical family business, is active in the industrial sector of natural stone. It was founded by Alfredo Polti in 1950, with the launch, in Grono, of a workshop for the processing of the Gneiss Calanca. The pioneer was however Alfredo’s father, Giovanni Polti, who in 1920 was involved in the extraction and processing of the Gneiss Calanca in the quarries of Arvigo, where in 1960 Alfredo Polti transferred the entire production. The extraction of the stone from its own quarries and its elaboration in new and modern laboratories thus became two integrated phases of a single production process. The Gneiss Calanca extracted from the quarries Alfredo Polti SA is treated in modern laboratories, where expert stonemasons transform it manually or mechanically, thanks to the help of the most modern machines for working with stone. Moreover, part of the material is put on the market in the raw state, in the form of blocks, irregular or quadrangular slabs, or masonry stones. The available offer is vast and includes products for: • the substructure • the superstructure • the construction and furnishing of parks, gardens, squares and cemeteries • the creation of artifacts able to satisfy the most demanding dictates of modern architecture of exteriors and interiors. About 90% of production is destined for the Swiss domestic market. The remainder is exported, in particular to Germany, Italy, Austria and France. In many cities of these countries you can admire important works realized with the Gneiss Calanca by Alfredo Polti SA produced in Arvigo. After the death of the founder Alfredo Polti, the company was taken over by: Giovanni Polti, who takes care of the extraction and production processes and Vania Polti Ambrosini, who guarantees administrative management. Since 2013, Alfredo Polti SA remains the only active quarry in the Calanca valley. Most of Alfredo Polti SA's collaborators have many years of service in the company, synonymous with experience and professionalism at the service of customers. Since May 2007 the company is ISO 9001 certified.

We offer customised waterproofing and resin coating solutions for customers in the Ticino region and Italian-speaking Switzerland. We innovate with sustainable solutions to ensure durability and safety Resin Coatings We perform resin coatings in outdoor and indoor areas; balconies, terraces, swimming pools, stairs, public areas, seamless living floors, etc. Beton Renovation Work on concrete walls and walls with resin injection system, static reinforcement of the load-bearing structure with resins and application of carbon fibre strips Fire Protection Insulation and Fire Protection Laying System Sealing of plant penetrations and structural joints, treatment with suitable intumescent and thermo-expanding fireproofing material in accordance with VKF standards Siliconing Sealing of all types of joints and gaps in new and existing constructions with suitable materials. We use high-quality products complete with warranty Waterproofing With proper waterproofing you can prevent damage caused by water seepage or condensation are the main causes of serious damage to the structure of buildings Choosing Isoline means relying on proven experience and innovative solutions in waterproofing and renovation, guaranteeing high quality and long-lasting results with a strong commitment to sustainability and safety. The benefits of resins are floor and wall coverings: ‍ ‍Repellent: Resin repels water, preventing damage from moisture and mould. This makes it ideal for damp environments such as bathrooms and kitchens. ‍Versatile: You can choose from many colours and styles. ‍Resistant: They are durable, resistant to scratches and chemicals. ‍Easy to clean: All you need is a broom and a damp cloth to keep them clean. ‍Jointless: The continuous joint-free surface is more hygienic and easier to maintain. ‍Eco-friendly: Some resins are recyclable and environmentally friendly. ‍Suitable for underfloor heating: They work well with underfloor heating. ‍Quick installation: They can be installed quickly, reducing waiting time. We build together Something Extraordinary Your trust, our commitment: Isoline has a rich portfolio of completed projects, a symbol of our competence and reliability. For all your needs, from renovation to waterproofing, we rely on our experience to guarantee tailor-made solutions and excellent results

Ottima qualità dei servizi e ottima consulenza. Nota di merito per la perfetta pulizia dopo il lavoro eseguito

Ogni volta che ho bisogno di un intervento, chiamo la ditta Sergio Alberti ma specifico sempre che voglio Francesco: è semplicemente il numero uno. Preciso, competente e professionale, quando lavora lui so che il lavoro sarà fatto bene e non dovrò più richiamare nessuno per sistemare qualcosa. È una garanzia. Complimenti anche alla ditta per avere persone come lui nel team!

Abbiamo scelto Resinart per rinnovare il pavimento di casa nostra applicando la resina sul pavimento esistente, e siamo rimasti davvero entusiasti del risultato. Fin dal primo contatto, si sono dimostrati molto gentili, professionali e disponibili. Durante il primo incontro a Locarno, abbiamo avuto il piacere di conoscere il Sig. Pasinelli, una persona estremamente preparata, cortese e attenta alle nostre esigenze, che ci ha guidati con competenza in tutte le fasi del progetto. I lavori sono stati eseguiti con grande cura da due ragazzi davvero in gamba: precisi, educati, puntuali e sempre disponibili a spiegare ogni fase del processo. Il risultato finale è stato impeccabile, esattamente come lo desideravamo. Un’azienda seria e appassionata, che dimostra grande attenzione al cliente e alla qualità del lavoro. Super consigliata per chi cerca una soluzione moderna, elegante e durevole per la propria casa. Complimenti a tutto il team Resinart!

Isotech Ticino SA A company with more than 60 years of experience in the construction industry, and particularly in waterproofing. In the course of six decades of activity, the company has significantly expanded its client base and the services it offers to them, and today also deals with many other sectors. Bituminous waterproofing Liquid plastic waterproofing Working joints Mastic joints Rigid waterproofing Injections Concrete restoration Static reinforcement with carbon slats Fire protection Anti-vibration carpets Anti-seismic carpets Flooring Draining natural stone paving Footpaths for old people's homes Anti-trauma flooring for playgrounds Flooring for Street Workout and Parkour Anti-trauma flooring for courtyards and gardens Sports Flooring Synthetic Grass Sports Flooring Gymnasium and Crossfit flooring Sports flooring for terraces and flat roofs Industrial flooring Giomoflex® granulate flooring Sports flooring for padel Drone surveys Project assistance

Chiamati per la levigatura del mio attico, devo dire molto veloci nella visione del lavoro. Quest'ultimo eseguito molto celermente e in modo ineccepibile. prezzi molto onesti.