Waterproofing in the
Canton of St. Gallen

TECTON AG St. Gallen

Since 2014 · 1–10 empl.

TECTON AG St. Gallen provides building maintenance, flat-roof work, renovations, sheet-metal work and green-roof services. Its activities focus on roofs and building envelopes.

dgr bauabdichtung gmbh

Since 2016 · 1–10 empl.

dgr bauabdichtung gmbh specializes in building waterproofing and firestop systems. Its services include joint and tape sealing as well as thermal insulation.

Richi's Blech GmbH

Since 2017 · 1–10 empl.

Richi's Blech GmbH carries out sheet-metal work on flat and pitched roofs, including gutters, waterproofing and repairs. Its services also include lightning protection systems, aluminium façades and chimney cladding.

Wiget Bedachungen GmbH

Since 2017 · 1–10 empl.

Wiget Bedachungen GmbH carries out work on pitched and flat roofs and building façades. Its services also include roof insulation and terrace flooring.

HDS Bautenschutz GmbH

Since 2019 · 1–10 empl.·5.0(5)

HDS Bautenschutz GmbH carries out building protection work. Its services include waterproofing, seamless floor and wall coatings, floor care and protection, concrete repairs, and structural strengthening of existing concrete structures.

waprotec ag

Since 2001 · 51–100 empl.·5.0(1)

The core activity of waprotec is the execution of sealing work in the construction industry, particularly in the planning, implementation and execution of sealing concepts for buildings, as well as in the renovation and conversion of existing buildings. The company offers a comprehensive range of services in sealing technology, including the use of modern sealing products and the development of individual solutions for customers.

Gmeiner AG

Since 1986 · 1–10 empl.·5.0(7)

The core activity of Gmeiner AG is the sealing of buildings in all forms in the field of civil engineering and construction, including the application of sealants, joint sealants, liquid plastics, Combiflex, films and tapes, as well as insulations such as XPS, soundproofing foam and rock wool.

vistona experts ag

Since 2018 · 51–100 empl.·5.0(1)

vistona experts ag plans and delivers waterproofing solutions for structures in contact with the ground and watertight concrete construction. Its services include consulting, concept development, BIM-based specialist planning, tendering, site supervision and implementation.

Primefloor GmbH

Since 2018 · 11–20 empl.·5.0(6)

Primefloor GmbH specialises in synthetic resin floor coatings and flooring systems. The company advises on, plans and applies floor and wall coatings, including seamless, decorative, industrial and sports-floor solutions, as well as waterproofing.

Baua-Tech GmbH

Since 2022 · 1–10 empl.

Baua-Tech GmbH carries out building waterproofing, work on flat and pitched roofs, and coating services. Its activities also include drywall construction, interior and exterior renovations, property maintenance, and building cleaning.

Northe GmbH

Since 2004 · 1–10 empl.·5.0(2)

Northe GmbH is a trade business specialising in plumbing and sheet-metal work. Its services include bathroom conversions, plumbing repairs and maintenance, flat-roof waterproofing and renovations, and metalwork for roofs and façades.

BL Abdichtungstechnik & Brandschutz GmbH

Since 2017 · 1–10 empl.·5.0(3)

BL Abdichtungstechnik & Brandschutz GmbH is a construction contractor specialising in building and joint sealing and fire protection. Its services also include cavity insulation, floor coatings, renovations, and specialist painting and spray techniques.

FLOEGO Fugenabdichtungen GmbH

Since 2022 · 1–10 empl.

FLOEGO Fugenabdichtungen GmbH specializes in joint sealing and waterproofing for the construction sector. Its services include joint repairs, joint tapes, fire-protection sealing and coatings for heavily used industrial floors.

AE Bedachungen GmbH

Since 2020 · 1–10 empl.·5.0(7)

AE Bedachungen GmbH carries out roofing work for new buildings, renovations and refurbishments. Its services include flat roofs, sheet-metal work, roof and terrace waterproofing, inspections, maintenance and repairs.

Sima-Bau AG

Since 1969 · 11–20 empl.·5.0(2)

Sima-Bau AG installs seamless floor and wall coverings based on epoxy resin and polyurethane for residential, industrial and public spaces. Its services also include building protection work such as waterproofing, coatings, joint repairs and bathroom renovations.

Curcio Fugentechnik GmbH

Since 2011 · 1–10 empl.·3.7(3)

Curcio Fugentechnik GmbH specialises in flexible joint sealing and silicone joints for buildings. Its work includes sealing joints in new construction and renewing or replacing joints during conversions and renovations, including those around floors, windows, doors, kitchens and sanitary installations.

Sealtech GmbH

Since 2022 · 1–10 empl.

Sealtech GmbH carries out joint sealing and fire-protection work for interior and exterior applications. Its services include fire stopping with mortar and soft seals, sealant and fire-protection joints, made-to-measure glass shower screens, and vapour and water barrier membranes.

F&S Bedachungen GmbH

Since 2020 · 1–10 empl.·5.0(6)

The core activity of F&S Bedachungen GmbH is the planning, coordination, renovation and maintenance of roofs, particularly pitched roofs, flat roofs and entrance roofs, as well as the application of liquid plastics and fine stoneware plates. The company also offers maintenance work and annual inspections to ensure the lifespan and quality of the roofs.

erratec ag

Since 2023 · 1–10 empl.

erratec ag plans and installs waterproofing systems for buildings, particularly for water-resistant structures, joints and surfaces. Its services include advice and installation of waterproofing systems, as well as building materials such as waterstops, injection hoses and fresh-concrete composite membranes; the company also undertakes flat-roofing and metalwork.

BauDicht AG, Zweigniederlassung St. Gallen

Since 2017 · 21–50 empl.·5.0(2)

BauDicht AG, Zweigniederlassung St. Gallen specialises in waterproofing for building construction and civil engineering. Its services include groundwater and structural waterproofing, as well as injection work for repair and renovation.

IBAR Abdichtung GmbH

Since 2018 · 1–10 empl.·5.0(3)

IBAR Abdichtung GmbH carries out waterproofing and coating work on floors, walls and joints. Its services include epoxy flooring, liquid-applied plastics, joint repairs, flat-roof waterproofing and fire protection.

ABN Fugen- & Bauabdichtungen AG

Since 2016 · 1–10 empl.·3.4(5)

ABN Fugen- & Bauabdichtungen AG carries out joint sealing and building waterproofing work. Its services include joint repairs, glass sealing, fire-protection joints, plastic waterproofing and injection work.

Städler Bedachungen GmbH

Since 2014 · 1–10 empl.·5.0(2)

Städler Bedachungen GmbH carries out flat-roof work for new buildings, alterations and renovations. Its services include waterproofing, thermal insulation, roof greening, gravel and usable roof coverings, fall-protection systems and roof access hatches.

D'Amore Fugen & Farben

Since 2023 · 1–10 empl.·4.8(6)

D'Amore Fugen & Farben provides joint sealing for indoor and outdoor areas, along with decorative painting. Its services also include interior and exterior painting and facade renovation work.

Polugic-Lötscher AG

Since 2021 · 1–10 empl.·5.0(1)

Polugic-Lötscher AG carries out interior and exterior plastering and painting work. Its services also include building protection, coating systems, seamless wall and floor finishes, and visible waterproofing.

Redzepi Dach

Since 2022 · 1–10 empl.·5.0(2)

Redzepi Dach provides flat-roof and roof-waterproofing work for new buildings, renovations and existing properties. Its services include bitumen-sheet and liquid-plastic waterproofing, sheet-metal work, roof inspections, cleaning and repairs.

DAWAG AG

Since 2025 · 11–20 empl.

DAWAG AG is a roofing, façade construction and waterproofing company. It plans, organises and carries out work on flat and pitched roofs and façades, and also provides roof windows, construction setting-out, repairs and maintenance.

Abdichtungssysteme Gorgomiti AG

Since 2026 · 1–10 empl.

Abdichtungssysteme Gorgomiti AG specialises in the remediation of moisture damage and mould in buildings. Its services include external and internal waterproofing, mould removal, interior insulation, drying, and the renovation of basement floors and balconies.

Neuhaus Dach AG

Since 2026 · 1–10 empl.

Neuhaus Dach AG carries out roofing and sheet-metal work. Its services include flat and pitched roofs, waterproofing, thermal insulation and façade work, as well as planning and execution of new-build and renovation projects.

LTN Flachdach Abdichtung GmbH

Since 2026 · 1–10 empl.

LTN Flachdach Abdichtung GmbH specializes in flat-roofing and waterproofing work. Its services include waterproofing for flat roofs, balconies and terraces, as well as new roof construction, renovation, sheet-metal work, roof maintenance, skylight installation and fall-protection systems.

MaTro Rheintal Anstalt, Schaan (LI), Zweigniederlassung Sevelen

Since 2026 · 1–10 empl.

MaTro Rheintal Anstalt, Schaan (LI), Zweigniederlassung Sevelen provides building protection and surface treatment services. Its activities include concrete injection and sealing, coatings, core drilling, abrasive and dry-ice blasting, painting, floor-covering removal, thermal zinc spraying and hydrophobic treatments.

Ingolf Schröder Fugentechnik

Since 2013 · 1–10 empl.

Ingolf Schröder Fugentechnik carries out elastic joint sealing and epoxy grouting, and provides surface waterproofing and dry construction work. Its services also include repairs and renovation of buildings and tiled surfaces, as well as the installation and delivery of prefabricated building components.

Kugelblitz AG

Since 2022 · 1–10 empl.

Kugelblitz AG prepares floor substrates using shot blasting, grinding and milling. Its services also include removing old coatings and floor coverings.

Vetsch Handwerk GmbH

Since 2023 · 1–10 empl.

Vetsch Handwerk GmbH installs wooden shingle façades and provides roof inspections, maintenance and repairs. Its services also include cleaning photovoltaic systems and waterproofing with liquid plastic.

Parduzi AG

Since 2023 · 1–10 empl.

Parduzi AG carries out installation and specialist work in building and civil engineering, focusing on joints, fire protection and system waterproofing. Its services include joint sealing, fire stopping, and liquid-applied, injection and structural waterproofing, from consultation and planning through to execution.

Minikus & Bertschinger Bautenschutz GmbH

Since 2025 · 1–10 empl.

Minikus & Bertschinger Bautenschutz GmbH carries out waterproofing, coating and building renovation work. Its services include balconies, terraces, cellars, and garage and concrete floors for private, commercial and industrial properties.

Koch Bedachungen

Since 2025 · 1–10 empl.

Koch Bedachungen provides roof work, sheet metal work, and waterproofing services for pitched and flat roofs. The company inspects, repairs, and renovates roofs and also uses liquid waterproofing materials for joints, balconies, and terraces.

HART Bodensysteme GmbH

Since 2026 · 1–10 empl.

HART Bodensysteme GmbH carries out flooring and floor-construction work for building projects. Its services include screeds, hard-concrete and resin floors, floor insulation, stair and sloped screeds, and building waterproofing.