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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionThusisIsotech Bautenschutz und Sanierungs AG
Isotech Bautenschutz und Sanierungs AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company offers services in the field of repair and renovation of buildings, particularly concrete structures, drinking water reservoirs and sewage treatment plants. The core activities include: Consulting, analysis and solution development for construction problems; Repair of concrete structures due to environmental influences and/or manufacturing defects; Sealing and coating of buildings, including drinking water reservoirs and sewage treatment plants; Structural reinforcement of industrial buildings, parking garages and bridges; Floor coatings for various applications, such as workshops, production halls and storage areas. The company thus provides comprehensive services for the repair, renovation and maintenance of buildings.

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Products & services

Industry:Building ConstructionBuilding Maintenance
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4.3/5

Isotech Bautenschutz und Sanierungs AG

✓ Offered11
Concrete repair
Repair of concrete structures affected by environmental influences and workmanship defects, including protection and maintenance of concrete structures, analysis, and cost-effective remediation.
Liquid plastic waterproofing
Waterproofing of balconies, terraces, roofs, wet rooms, underground car parks, and traffic areas using various liquid plastic systems on concrete, wood, or sheet metal.
Polymer-modified bitumen waterproofing
Waterproofing systems with polymer-modified bituminous sealing membranes for roofs, parking decks, terraces, and underground structural components.
Injections
Permanent sealing of construction joints, cracks, and penetrations in case of water ingress in underground and tunnel areas.
Structural strengthening
Strengthening of industrial buildings, multi-storey car parks, bridges, slabs, columns, timber and steel structural components, and improving earthquake safety.
Shotcrete
Shotcrete work for adits, tunnels, and other structures, including engineering, nozzle guidance, machinery fleet, and site-specific safety management.
Rigid waterproofing
Composite waterproofing with waterproof mortar for horizontal, vertical, and overhead surfaces for both pressurised and non-pressurised water.
Floor coatings
Functional and aesthetic floor coatings for workshops, production halls, storage areas, parking areas, offices, and wet rooms.
AQUAzem® cement mortar lining for water reservoirs
Mineral cement mortar lining for the rehabilitation of drinking water reservoirs with smooth surface, low porosity, and high durability.
Dualseal bentonite sheets
Waterproofing system made of bentonite and HDPE film for sealing surfaces against pressurised water, also on damp substrates and at low temperatures.
PCB remediation of joints
Remediation of PCB-containing caulked joints and floor coatings in buildings from the years 1955 to 1980, including testing, remediation concept, and disposal.
Trust & reputation

ranQ Trust Score of Isotech Bautenschutz und Sanierungs AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Isotech Bautenschutz und Sanierungs AG scores 66.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.80.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.55.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Isotech Bautenschutz und Sanierungs AG scores 93.9 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Isotech Bautenschutz und Sanierungs AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Isotech Bautenschutz und Sanierungs AG scores 74.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Isotech Bautenschutz und Sanierungs AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 8 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Rozaweg 4
7430 Thusis

At a glance

Legal form
Corporation
UID
CHE-312.152.368
Founded
2011 · 15 years
Last commercial register change
May 5, 2025
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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