Sealing & Insulation in
Winterthur

55 companies in Sealing & Insulation based in Winterthur — name and year of registration from the commercial register.

Companies

50 of 55 companies

AGI AG für Isolierungen, Zweigniederlassung Winterthur Logo

AGI AG für Isolierungen, Zweigniederlassung Winterthur

Since 1991 · 21–50 empl.5.0(5)

AGI AG für Isolierungen, Zweigniederlassung Winterthur provides services in technical insulation and structural fire protection. Offerings include consulting and planning, BIM planning, product management and trade (including aerogel and vacuum insulation), project realization (insulation, fire protection, ductwork and metal fabrication) and maintenance.

Sealing & InsulationStructural Fire ProtectionTechnical InsulationAdvisory and Planning
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #1
Isoplan AG Logo

Isoplan AG

Since 2016 · 11–20 empl.4.3(23)

The core activity of Isoplan Gebäudetechnik is the planning, consulting and implementation of insulation and fire protection measures for buildings and infrastructure, including insulation, fire protection cladding, smoke extraction and sheet metal work.

Sealing & InsulationPipe insulationVentilation insulationInsulation of thermal storage tanks
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #2
brandschutz consulting gmbh Logo

brandschutz consulting gmbh

Since 2012 · 1–10 empl.

The company's core activity is consulting, planning and quality assurance in the field of fire protection, particularly the development of fire protection concepts and plans, as well as quality assurance during the implementation of construction projects.

Sealing & InsulationFire protection consultingFire safety concept and planningQuality assurance in fire protection
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
isodicht GmbH Logo

isodicht GmbH

Since 2011 · 1–10 empl.4.4(5)

The core activity of Isodicht GmbH is the provision of services in the field of building sealing, particularly in the following specific areas: joint sealing, fire stopping, Combiflex sealing, vapour and water membranes, and concrete injections. The company offers consulting, planning and execution of sealing solutions for new buildings, renovations and restorations to prevent damage from moisture, water and fire and to ensure the tightness of buildings.

Sealing & InsulationJoint sealingFirestoppingCombiflex sealings
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
ENI Fugenabdichtungen GmbH Logo

ENI Fugenabdichtungen GmbH

Since 2020 · 1–10 empl.

The core activity of Eni Fugenabdichtungen GmbH is the manufacture and installation of sealing solutions for joints in civil engineering and underground construction, as well as in various other construction projects, to protect them from moisture, temperature fluctuations and weather influences.

Sealing & InsulationJoint sealingsSealing of wet areas and tile jointsFacade and perimeter joint sealings
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #5
Bruno Isolierungen GmbH Logo

Bruno Isolierungen GmbH

Since 2018 · 1–10 empl.5.0(5)

The core activity of Bruno Isolierungen GmbH is the development, manufacture and delivery of technical insulation solutions.

Sealing & InsulationTechnical insulationInsulation of heating pipesInsulation of sanitary pipes
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #6
Ferati Isolierungen GmbH Logo

Ferati Isolierungen GmbH

Since 2013 · 1–10 empl.5.0(1)

The core activity of Ferati Isolierungen GmbH is the provision of insulation services of all kinds, particularly in the areas of heat, cold, sound and fire protection, as well as ventilation and heating insulation. This also includes special services such as sheet metal cladding, Wraptec and fire protection with Promat.

Sealing & InsulationTechnical insulationSheet metal claddingFire stopping
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #7
TOPLANA Isolationen GmbH Logo

TOPLANA Isolationen GmbH

Since 2019 · 1–10 empl.5.0(2)

The core activity of Toplana Isolationen GmbH is the provision of insulation services.

Sealing & InsulationTechnical insulationCold and thermal insulationFire-protection insulation
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #8
Indisol AG Logo

Indisol AG

Since 2024 · 1–10 empl.5.0(4)

Indisol AG is a trading company that supplies technical insulation materials and accessories for thermal, cold, fire and acoustic protection. Its product range includes mineral wool, PIR, rubber insulation, fire protection products, claddings, tapes and installation tools; the company provides a digital price list, an online shop, BIM data and a product finder, and maintains warehousing to enable rapid delivery and technical consultation.

Sealing & InsulationTechnical insulationWinterthur collection depotPrice list and price information
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #9
Alberto Penna Gipsergeschäft GmbH Logo

Alberto Penna Gipsergeschäft GmbH

Since 2023 · 1–10 empl.

Alberto Penna Gipsergeschäft GmbH performs plastering and dry-construction work and offers services such as wet plaster, clay plaster, stucco and acoustic systems. The company also provides fire-protection work, thermal insulation, demolition, new-build and renovation projects, repairs, water-damage remediation and painting.

Interior ConstructionPlastering workDrywall constructionAcoustic systems
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #10
Isoring GmbH Logo

Isoring GmbH

Since 2018 · 1–10 empl.5.0(1)

The core activity of Isoring GmbH is the development and provision of technical insulation and cladding solutions for various requirements such as heat, cold, sound and fire protection. The company offers solutions for the insulation of pipelines and ventilation ducts and uses various materials such as PIR rigid foam shells, mineral wool, rock wool and synthetic rubber.

Sealing & InsulationTechnical Insulation
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #11
A&E Gipsergeschäft GmbH Logo

A&E Gipsergeschäft GmbH

Since 2016 · 1–10 empl.5.0(1)

The core activity of A&E Gipsergeschäft GmbH is the execution of plastering work, drywall construction and thermal insulation for new buildings and renovations. This includes in particular: exterior thermal insulation, fire protection measures, ceiling claddings, lightweight walls, plastering work (e.g. plastering work in interior areas) and painting work (e.g. exterior painting for facades). The company also offers consulting, planning and execution of construction projects and places emphasis on meeting the highest quality standards.

Sealing & InsulationRendered external thermal insulationFire protection measuresPlastering and drywall work
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #12
Megga Isolierung GmbH Logo

Megga Isolierung GmbH

Since 2020 · 1–10 empl.5.0(1)

The core activity of Megga Isolierung GmbH is the provision of insulation services, particularly in the areas of thermal, cold, sound and fire insulation for building installations. The company offers consulting, planning and execution of insulation solutions for residential buildings, commercial properties and industrial facilities.

Sealing & InsulationThermal insulationCold insulationFire insulation
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #13
JADA Dämm- und Brandschutz AG Logo

JADA Dämm- und Brandschutz AG

Since 2025 · 1–10 empl.

JADA Dämm- und Brandschutz AG provides technical insulation and fire protection solutions for buildings and systems. Its services include insulation for pipes and ventilation systems, fire stopping, fire protection cladding, and smoke extraction systems.

Technical Consulting & EngineeringTechnical InsulationVentilation InsulationFire Stopping
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #14
Sandro Scura Isolierungen Logo

Sandro Scura Isolierungen

Since 2019 · 1–10 empl.5.0(1)

The core activity of Scura Isolierungen is the development and application of insulation solutions for various industries, particularly for sanitary and refrigeration pipes as well as pipelines. The company offers innovative and high-quality solutions for heat and cold protection and develops optimized solutions for specific needs.

Sealing & InsulationTechnical insulationPipe insulationInsulating sanitary pipes
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #15
Lenjani-Fugen Logo

Lenjani-Fugen

Since 2025 · 1–10 empl.

Lenjani-Fugen provides joint sealing, epoxy joint solutions and other waterproofing services for construction projects. Its service range also includes tile work, liquid-applied waterproofing and fire stopping.

Sealing & InsulationJoint SealingEpoxy GroutingTile Laying Work
ranQ Trust Score 3.5 out of 5.0, rated Solid, Rank #16
KWD Kälte-, Wärme-, Dämmtechnik GmbH Logo

KWD Kälte-, Wärme-, Dämmtechnik GmbH

Since 2006 · 11–20 empl.

The core activity of KWD GmbH is the planning, consulting and execution of thermal insulation, including the selection of materials and compliance with energy regulations.

Sealing & InsulationCold insulationHeat insulationSanitary insulation
No score yet
Agida Iso AG Logo

Agida Iso AG

Since 2014 · 11–20 empl.

The core activity of AGIDA Iso AG is the planning, design and execution of insulation solutions for various fields of application, particularly in the construction industry. This includes the installation of thermal insulation to prevent heat loss, the prevention of cold bridges and condensation, as well as optimal fire protection. The company also offers services in the fields of sheet metal work, pipeline construction and ventilation/air conditioning systems.

Sealing & InsulationPipe insulationVentilation/HVAC insulationFire protection insulation
No score yet
WINTI Fugen GmbH Logo

WINTI Fugen GmbH

Since 2017 · 1–10 empl.

The core activity of Winti Fugen GmbH is the provision of sealing and protection services for buildings, particularly in the areas of joint sealing, facade sealing, fire protection joints, silicone/hybrid joints, special seals, as well as renovations and refurbishments.

Sealing & InsulationJoint sealingsFacade sealingsFire protection joints
No score yet
PEKEN GmbH Logo

PEKEN GmbH

Since 2020 · 1–10 empl.

PEKEN GmbH performs insulation and fire-protection work for construction projects. The website lists reference projects including the FIFA World Football Museum and Ceres Living Pratteln.

Sealing & InsulationInsulationFire protection
No score yet
Georgios Papageorgiou Logo

Georgios Papageorgiou

Since 2025 · 1–10 empl.

Georgios Papageorgiou provides joint sealing, hybrid joints, joint refurbishment and fire protection joints. The company focuses on clean, durable sealing work for bathrooms, kitchens, windows, floors and façades.

Sealing & InsulationJoint SealingJoint RenovationFire Protection Joints
No score yet
Hidalgo Pena Dachdecker Logo

Hidalgo Pena Dachdecker

1–10 empl.

Hidalgo Pena Dachdecker provides waterproofing services for flat roofs, balconies, and indoor and outdoor areas. The company works with bitumen, TPO membranes, liquid waterproofing systems, and insulation, and also carries out repairs and refurbishments.

Sealing & InsulationFlat Roof WaterproofingBalcony and Terrace WaterproofingInterior and Exterior Waterproofing
No score yet
FA

Fadaplan AG

Since 1989 · 1–10 empl.

Sealing & Insulation
No score yet
BA

Beyeler-Suremann AG

Since 1992 · 1–10 empl.

Sealing & Insulation
No score yet
DA

Desmo AG

Since 1994 · 1–10 empl.

Sealing & Insulation
No score yet
WG

Wintiisol GmbH

Since 1998 · 1–10 empl.

Sealing & Insulation
No score yet
PS

Ponticello S. Fassadenisolationen

Since 2001 · 1–10 empl.

Sealing & Insulation
No score yet
ST

Sami Tahiri S-T Isolationen

Since 2005 · 1–10 empl.

Sealing & Insulation
No score yet
RG

RaffiGroup GmbH

Since 2005 · 1–10 empl.

Horticulture & Landscaping
No score yet
HI

Helbling Isolierungen

Since 2007 · 1–10 empl.

Sealing & Insulation
No score yet
TF

TOP-Isoliertechnik, Fati Selmani

Since 2009 · 1–10 empl.

Sealing & Insulation
No score yet
PG

Perfectplast GmbH

Since 2010 · 1–10 empl.

Sealing & Insulation
No score yet
XG

Xhabali Group GmbH

Since 2012 · 1–10 empl.

Sealing & Insulation
No score yet
FZ

Fugentech Zona GmbH

Since 2012 · 1–10 empl.

Sealing & Insulation
No score yet
RD

R. Duraku GmbH

Since 2018 · 1–10 empl.

Sealing & Insulation
No score yet
KI

KF Isolierungen GmbH

Since 2019 · 1–10 empl.

Sealing & Insulation
No score yet
RT

Reba Tech GmbH

Since 2019 · 1–10 empl.

Sealing & Insulation
No score yet
DI

Dina Isolierungen GmbH

Since 2019 · 1–10 empl.

Sealing & Insulation
No score yet
AF

ALKA Fassadenbau GmbH

Since 2020 · 1–10 empl.

Sealing & Insulation
No score yet
MG

Medisol GmbH

Since 2020 · 1–10 empl.

Sealing & Insulation
No score yet
AF

AB Fugentech GmbH

Since 2021 · 1–10 empl.

Sealing & Insulation
No score yet
DG

Deratec GmbH

Since 2022 · 1–10 empl.

Sealing & Insulation
No score yet
HI

HLS Isospengler GmbH

Since 2022 · 1–10 empl.

Sealing & Insulation
No score yet
EG

EF-Isolierungen GmbH

Since 2022 · 1–10 empl.

Sealing & Insulation
No score yet
TI

TEKIN Isolationen GmbH

Since 2023 · 1–10 empl.

Sealing & Insulation
No score yet
MG

Montage Group Ivanov

Since 2023 · 1–10 empl.

Building Maintenance
No score yet
DS

Daku Silikon Fugen

Since 2023 · 1–10 empl.

Sealing & Insulation
No score yet
AI

AZ Isolierungen GmbH

Since 2023 · 1–10 empl.

Sealing & Insulation
No score yet
TI

Top Isolierungen GmbH

Since 2024 · 1–10 empl.

Sealing & Insulation
No score yet
IP

Isolation Plus GmbH

Since 2024 · 1–10 empl.

Sealing & Insulation
No score yet

Sealing & Insulation in Winterthur

55Sealing & InsulationCommercial register (Zefix) · as of October 11, 2026
2019Median year of registrationCommercial register (Zefix) · as of October 11, 2026
492in the Canton of ZurichCommercial register (Zefix) · as of October 11, 2026
2,393in SwitzerlandCommercial register (Zefix) · as of October 11, 2026
Locations

Sealing & Insulation in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 11, 2026